CN114839276A - Simulation container for prefabricating various defects and preparation method thereof - Google Patents
Simulation container for prefabricating various defects and preparation method thereof Download PDFInfo
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- CN114839276A CN114839276A CN202210341777.9A CN202210341777A CN114839276A CN 114839276 A CN114839276 A CN 114839276A CN 202210341777 A CN202210341777 A CN 202210341777A CN 114839276 A CN114839276 A CN 114839276A
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- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
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Abstract
The invention relates to a simulation container for prefabricating various defects and a preparation method thereof, wherein the simulation container comprises a tank body, wherein a first welding seam, a second welding seam, a third welding seam, a fourth welding seam, a fifth welding seam, a sixth welding seam, a seventh welding seam, an eighth welding seam, a ninth welding seam, a tenth welding seam and an eleventh welding seam are arranged on the tank body; the sixth welding line is arranged on the transverse center line of the tank body, the first welding line and the eleventh welding line are symmetrically arranged on the upper side and the lower side of the sixth welding line, and the first welding line and the eleventh welding line are arranged in parallel with the sixth welding line; and a seventh welding seam, an eighth welding seam, a ninth welding seam and a tenth welding seam are uniformly distributed between the eleventh welding seam and the sixth welding seam. The method is suitable for high-precision and accurate evaluation of the defects, and provides an accurate technical basis for forming defect acoustic emission quantitative criteria and safe operation management and control aiming at the spherical storage tank.
Description
Technical Field
The invention relates to the technical field of weld defect detection, in particular to a simulation container for prefabricating various defects and a preparation method thereof.
Background
The quality of welding quality directly determines the quality of products, and due to the influence of various interference factors in the welding process, the phenomenon of unstable welding can occur, so that weld defects such as cracks, unmelted welding, incomplete penetration, depressions, slag inclusion, air holes and the like are generated, and the defects can cause the conditions of reduction of the cross section area of a weld, reduction of the bearing capacity of a weldment, stress concentration, reduction of fatigue strength, easy breakage of the weldment, brittle failure and the like. In particular, the welding seam quality detection during the welding process becomes important in order to avoid the loss caused by the quality problem of the weldment due to the largest harm of the welding seam cracks and unfused welding in the welding process.
At present, five conventional nondestructive detection methods, namely a visual detection method, a ray inspection method, an ultrasonic detection method, a penetration detection method and a magnetic powder detection method, are mainly used for detecting weld defects, and in the detection process of the weld defects, the existing detection methods often have the conditions of inaccurate signal identification and inconsistent processing results, so that the weld defects need to be detected and researched, and a simulation container for prefabricating various defects is urgently needed aiming at quantitative criteria and detection rules for online detection of activity and strength of acoustic emission of steel for spherical storage tanks, and a defect preparation method is needed.
Disclosure of Invention
The invention aims to overcome the defects and provide a simulation container with various prefabricated defects and a preparation method thereof, which can simulate different working conditions, arrange a plurality of probes aiming at the positions of the defects and be suitable for high-precision and accurate evaluation of the defects.
The purpose of the invention is realized as follows:
a simulation container for prefabricating multiple defects comprises a tank body, wherein the tank body is a spherical storage tank, four support supports are arranged at the lower part of the tank body, and a first welding line, a second welding line, a third welding line, a fourth welding line, a fifth welding line, a sixth welding line, a seventh welding line, an eighth welding line, a ninth welding line, a tenth welding line and an eleventh welding line are arranged on the tank body; the sixth welding line is arranged on the transverse center line of the tank body, the first welding line and the eleventh welding line are symmetrically arranged on the upper side and the lower side of the sixth welding line, and the first welding line and the eleventh welding line are arranged in parallel with the sixth welding line; a second welding seam, a third welding seam, a fourth welding seam and a fifth welding seam are uniformly distributed between the first welding seam and the sixth welding seam, and a seventh welding seam, an eighth welding seam, a ninth welding seam and a tenth welding seam are uniformly distributed between the eleventh welding seam and the sixth welding seam; and one or more of five weld defects, namely a circle-lacking weld defect, a strip-lacking weld defect, an unfused weld defect, a penetration-lacking weld defect and a crack weld defect, are respectively arranged on the first weld, the second weld, the third weld, the fourth weld, the fifth weld, the sixth weld, the seventh weld, the eighth weld, the ninth weld, the tenth weld and the eleventh weld.
Furthermore, the left part of the longitudinal center line of the left side of the tank body between the first welding line and the sixth welding line is a first area, and a third welding line is arranged in the first area; the right part of the longitudinal center line of the left side of the tank body between the first welding line and the sixth welding line is a second area, and a second welding line is arranged in the second area; the left part of the longitudinal center line of the left side of the tank body between the eleventh welding line and the sixth welding line is a third area, and an eighth welding line is arranged in the third area; the right part of the longitudinal center line of the left side of the tank body between the eleventh welding line and the sixth welding line is a fourth area, and a seventh welding line is arranged in the fourth area; the left part of the longitudinal center line on the right side of the tank body between the first welding line and the sixth welding line is a fifth area, and a fifth welding line is arranged in the fifth area; the right part of the longitudinal center line on the right side of the tank body between the first welding line and the sixth welding line is a sixth area, and a fourth welding line is arranged in the sixth area; the left part of the longitudinal center line on the right side of the tank body between the eleventh welding line and the sixth welding line is a seventh area, and a tenth welding line is arranged in the seventh area; the right part of the longitudinal center line on the right side of the tank body between the eleventh welding line and the sixth welding line is an eighth area, and a ninth welding line is arranged in the eighth area.
Further, the third welding seam and the eighth welding seam are arranged in a staggered mode, and the second welding seam and the seventh welding seam are arranged in a staggered mode.
Furthermore, the welding seam on the right side of the tank body and the welding seam on the left side of the tank body are symmetrically arranged.
Furthermore, a lifting device is arranged below two adjacent supports in the four supports below the tank body.
Furthermore, the top surface of the tank body is provided with an upper end enclosure, and a probe is arranged in the upper end enclosure.
Further, a manhole cylinder is arranged on the bottom surface of the tank body, and a probe is arranged in the manhole cylinder.
Furthermore, a probe is respectively arranged at the joint of each welding seam.
A method for preparing a simulated container with a plurality of prefabricated defects comprises the following steps:
preparing a steel spherical tank as a simulation container;
four support supports are arranged at the bottom of the steel spherical tank body;
arranging a plurality of welding seams on the surface of the tank body, wherein the welding seams comprise a first welding seam, a second welding seam, a third welding seam, a fourth welding seam, a fifth welding seam, a sixth welding seam, a seventh welding seam, an eighth welding seam, a ninth welding seam, a tenth welding seam and an eleventh welding seam, the sixth welding seam is arranged on the transverse center line of the tank body, the first welding seam and the eleventh welding seam are symmetrically arranged on the upper side and the lower side of the sixth welding seam, and the first welding seam and the eleventh welding seam are arranged in parallel with the sixth welding seam; the left part of the left longitudinal center line of the left side of the tank body between the first welding line and the sixth welding line is a first area, a third welding line is arranged in the first area, the right part of the left longitudinal center line of the tank body between the first welding line and the sixth welding line is a second area, a second welding line is arranged in the second area, the left part of the left longitudinal center line of the left side of the tank body between the eleventh welding line and the sixth welding line is a third area, an eighth welding line is arranged in the third area, the right part of the left longitudinal center line of the left side of the tank body between the eleventh welding line and the sixth welding line is a fourth area, a seventh welding line is arranged in the fourth area, the left part of the right longitudinal center line of the tank body between the first welding line and the sixth welding line is a fifth area, the right part of the right longitudinal center line of the tank body between the first welding line and the sixth welding line is a sixth area, and the left part of the right longitudinal center line of the tank body between the eleventh welding line and the sixth welding line is a seventh area, the right part of the longitudinal center line of the right side of the tank body between the eleventh welding line and the sixth welding line is an eighth area, the third welding line and the eighth welding line are arranged in a staggered mode, the second welding line and the seventh welding line are arranged in a staggered mode, and the welding line of the right side of the tank body and the welding line of the left side of the tank body are symmetrically arranged;
One or more welding seam defects of round, strip, unfused, incomplete penetration and crack welding seam defects are manufactured on each welding seam;
the inner surface of the simulation container is provided with a plurality of probes, the top and the bottom of the simulation container are respectively provided with one probe, and other probes are uniformly distributed around the welding line;
and lifting devices are arranged below two adjacent supports at the bottom of the simulation container, and the lifting devices adopt hydraulic oil cylinders to simulate the state of uneven settlement of the tank body.
Further, the welding method of the circular-defect welding seam defect adopts argon arc welding, and a blowing device is used for blowing the part being welded in the welding process;
when the strip-lacking welding seam defect is welded, a small amount of welding slag is placed at the position where the strip-lacking seam is needed to be generated between layers, and then welding is continued;
the non-fusion weld defects reduce the welding current to a minimum current less than the process requirements during welding;
reducing the welding current to be less than the minimum current required by the process when the incomplete penetration weld joint defect is welded;
when the crack welding seam defect is welded, a section of copper wire is placed between layers, the diameter of the copper wire is 0.5-2 mm, and the length of the copper wire is adjusted according to the length of a crack generated as required.
Compared with the prior art, the invention has the beneficial effects that:
the spherical tank body is adopted to simulate the steel container and is used for on-line detection of the weld defects of the steel spherical container, the tank body is distributed with a plurality of weld defects according to regions, including the weld defects of circle defects, strip defects, incomplete fusion, incomplete penetration, cracks and the like, the weld defects are regularly arranged on the tank body, different working conditions are simulated, a plurality of probes are arranged according to the positions of the defects, the spherical tank damage acoustic emission signal mode identification method is suitable for high-precision accurate evaluation of the defects, accurate identification of the spherical tank damage acoustic emission signal mode with complex backgrounds is realized, and accurate technical basis is provided for forming defect acoustic emission quantification criteria and safe operation management and control aiming at the spherical storage tank.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a left side view of embodiment 1 of the present invention.
Fig. 3 is a right side view of embodiment 1 of the present invention.
Fig. 4 is a top view of the present invention.
Wherein:
the device comprises a tank body 1, a support 2, a first welding seam 31, a second welding seam 32, a third welding seam 33, a fourth welding seam 34, a fifth welding seam 35, a sixth welding seam 36, a seventh welding seam 37, an eighth welding seam 38, a ninth welding seam 39, a tenth welding seam 310, an eleventh welding seam 311, a first probe 41, a second probe 42, a third probe 43, a fourth probe 44, a fifth probe 45, a sixth probe 46, a seventh probe 47, an eighth probe 48, a ninth probe 49, a tenth probe 410, an eleventh probe 411, a twelfth probe 412, an upper seal head 5, an upper vent 51, a hand hole 52, a manhole cylinder 6, a manhole flange 61, a manhole cover 62, a vent 63, a manhole 64, a vent 7, a safety valve port 8, a pressure gauge 9, a sewage draining outlet 10 and a lifting device 11.
Detailed Description
For a better understanding of the technical aspects of the present invention, reference will now be made in detail to the accompanying drawings. It should be understood that the following specific examples are not intended to limit the embodiments of the present invention, but are merely exemplary embodiments of the present invention. It should be noted that the description of the positional relationship of the components, such as the component a is located above the component B, is based on the description of the relative positions of the components in the drawings, and is not intended to limit the actual positional relationship of the components.
Example 1:
referring to fig. 1-4, fig. 1 depicts a schematic of a simulated container for pre-forming a plurality of defects. As shown in the figure, the simulation container for prefabricating various defects comprises a tank body 1, wherein the tank body 1 is a steel spherical storage tank, the lower part of the tank body 1 is provided with four supports 2 for supporting, the surface of the tank body 1 is provided with various welding seam defects and a plurality of probes, and the probes adopt acoustic emission sensors.
The plurality of weld defects comprise a first weld 31, a second weld 32, a third weld 33, a fourth weld 34, a fifth weld 35, a sixth weld 36, a seventh weld 37, an eighth weld 38, a ninth weld 39, a tenth weld 310 and an eleventh weld 311 which are distributed on the surface of the tank body 1.
The sixth welding line 36 is arranged on the transverse center line of the tank body 1, and the sixth welding line 36 is provided with 2 circular defect welding line defects, 3 defect welding line defects and 3 crack welding line defects.
The first welding seam 31 and the eleventh welding seam 311 are symmetrically arranged at the upper side and the lower side of the sixth welding seam 36, and the first welding seam 31, the eleventh welding seam 311 and the sixth welding seam 36 are arranged in parallel; the first welding seam 31 is provided with 1 circular-defect welding seam defect, 1 strip-defect welding seam defect and 4 unfused welding seam defects, and the eleventh welding seam 311 is provided with 1 circular-defect welding seam defect and 1 unfused welding seam defect.
The left part of the longitudinal center line of the left side of the tank body 1 between the first welding line 31 and the sixth welding line 36 is a first area, a third welding line 33 is arranged in the first area, and 1 unwelded welding line defect is arranged on the third welding line 33.
The right part of the longitudinal center line of the left side of the tank body 1 between the first welding line 31 and the sixth welding line 36 is a second area, a second welding line 32 is arranged in the second area, and 1 crack welding line defect is arranged on the second welding line 32.
The left part of the longitudinal center line of the left side of the can body 1 between the eleventh welding line 311 and the sixth welding line 36 is a third area, an eighth welding line 38 is arranged in the third area, and 1 unwelded welding line defect is arranged on the eighth welding line 38.
The right part of the longitudinal center line of the left side of the tank body 1 between the eleventh welding line 311 and the sixth welding line 36 is a fourth area, a seventh welding line 37 is arranged in the fourth area, and the seventh welding line 37 is provided with 1 circular-missing welding line defect, 1 strip-missing welding line defect and 1 crack welding line defect.
The left part of the longitudinal center line on the right side of the tank body 1 between the first welding line 31 and the sixth welding line 36 is a fifth area, a fifth welding line 35 is arranged in the fifth area, and 1 circular-defect welding line defect is arranged on the fifth welding line 35.
The right part of the longitudinal center line on the right side of the tank body 1 between the first welding line 31 and the sixth welding line 36 is a sixth area, a fourth welding line 34 is arranged in the sixth area, and 1 unwelded welding line defect and 1 crack welding line defect are arranged on the fourth welding line 34.
The left part of the longitudinal center line on the right side of the tank body 1 between the eleventh welding line 311 and the sixth welding line 36 is a seventh area, a tenth welding line 310 is arranged in the seventh area, and the tenth welding line 310 is provided with 2 defective strip welding lines and 1 defective incomplete penetration welding line.
The right part of the longitudinal center line on the right side of the tank body 1 between the eleventh welding line 311 and the sixth welding line 36 is an eighth area, a ninth welding line 39 is arranged in the eighth area, and 1 circular-defect welding line defect is arranged on the ninth welding line 39.
The third weld seams 33 and the eighth weld seams 38 are staggered, and the second weld seams 32 and the seventh weld seams 37 are staggered.
The welding seam on the right side of the tank body 1 and the welding seam on the left side of the tank body 1 are symmetrically arranged.
The top surface of the tank body 1 is provided with an upper seal head 5, the upper seal head 5 is provided with an upper exhaust port 51 and a hand hole 52, the bottom surface of the tank body 1 is provided with a manhole cylinder 6, the manhole cylinder 6 is connected with a manhole cover 62 through a manhole flange 61, and the manhole cover 62 is provided with a manhole 64 and a lower exhaust port 63.
One side of the upper sealing head 5 is provided with an emptying port 7, the other side of the upper sealing head is provided with a safety valve port 8, a pressure gauge 9 is arranged between the emptying port 7 and the upper sealing head 5, and the pressure gauge 9 is also arranged between the safety valve port 8 and the upper sealing head 5.
Two sides of the manhole cylinder 6 are respectively provided with a sewage outlet 10.
Two adjacent supports 2 in the four supports 2 below the tank body 1 are provided with lifting devices 11, and the lifting devices 11 adopt hydraulic oil cylinders to simulate the uneven settlement state of the tank body 1.
The inner wall of the upper seal head 5 is provided with a first probe 41, the joint of an eleventh welding line 311 and an eighth welding line 38 is provided with a second probe 42, the joint of the eleventh welding line 311 and a tenth welding line 310 is provided with a third probe 43, the joint of the eleventh welding line 311 and a ninth welding line 39 is provided with a fourth probe 44, the joint of the third welding line 33 and the sixth welding line 36 is provided with a fifth probe 45, the joint of the second welding line 32 and the sixth welding line 36 is provided with a sixth probe 46, the joint of the fifth welding line 35 and the sixth welding line 36 is provided with a seventh probe 47, the joint of the fourth welding line 34 and the sixth welding line 36 is provided with an eighth probe 48, the center of the left surface of the first welding line 31 is provided with a ninth probe 49, the joint of the fifth welding line 35 and the first welding line 31 is provided with a tenth probe 410, and the eleventh probe 411 is arranged at the joint of the fourth welding line 34 and the first welding line 31, the inner wall of the manhole cylinder 6 is provided with a twelfth probe 412.
Referring to fig. 1-4, a method for preparing a simulated container with a plurality of prefabricated defects according to the present invention comprises the following steps:
preparing a steel spherical tank as a simulation container;
four support supports are arranged at the bottom of the steel spherical tank body;
arranging a plurality of welding seams on the surface of the tank body, wherein the welding seams comprise a first welding seam, a second welding seam, a third welding seam, a fourth welding seam, a fifth welding seam, a sixth welding seam, a seventh welding seam, an eighth welding seam, a ninth welding seam, a tenth welding seam and an eleventh welding seam, and different welding seam defects are manufactured on each welding seam;
the sixth welding line is arranged on the transverse center line of the tank body, and the sixth welding line is provided with 2 circle-lacking welding line defects, 3 strip-lacking welding line defects and 3 crack welding line defects;
the first welding line and the eleventh welding line are symmetrically arranged at the upper side and the lower side of the sixth welding line, and the first welding line and the eleventh welding line are arranged in parallel with the sixth welding line; the first welding line is provided with 1 circular-defect welding line defect, 1 strip-defect welding line defect and 4 unfused welding line defects, and the eleventh welding line is provided with 1 circular-defect welding line defect and 1 unfused welding line defect;
the left part of the longitudinal center line of the left side of the tank body between the first welding line and the sixth welding line is a first area, a third welding line is arranged in the first area, and the third welding line is provided with 1 unwelded welding line defect;
The right part of the longitudinal center line of the left side of the tank body between the first welding line and the sixth welding line is a second area, a second welding line is arranged in the second area, and 1 crack welding line defect is arranged on the second welding line;
the left part of the longitudinal center line of the left side of the tank body between the eleventh welding line and the sixth welding line is a third area, an eighth welding line is arranged in the third area, and 1 unwelded welding line defect is arranged on the eighth welding line;
the right part of the longitudinal center line of the left side of the tank body between the eleventh welding line and the sixth welding line is a fourth area, a seventh welding line is arranged in the fourth area, and the seventh welding line is provided with 1 circular defect welding line defect, 1 strip defect welding line defect and 1 crack welding line defect;
the left part of the longitudinal center line of the right side of the tank body between the first welding line and the sixth welding line is a fifth area, a fifth welding line is arranged in the fifth area, and the fifth welding line is provided with 1 circular defect welding line defect;
the right part of the longitudinal center line of the right side of the tank body between the first welding line and the sixth welding line is a sixth area, a fourth welding line is arranged in the sixth area, and the fourth welding line is provided with 1 unwelded welding line defect and 1 crack welding line defect;
The left part of the longitudinal center line of the right side of the tank body between the eleventh welding line and the sixth welding line is a seventh area, a tenth welding line is arranged in the seventh area, and the tenth welding line is provided with 2 defective welding line defects and 1 incomplete welding line defect;
the right part of the longitudinal center line of the right side of the tank body between the eleventh welding line and the sixth welding line is an eighth area, a ninth welding line is arranged in the eighth area, and the ninth welding line is provided with 1 circular-defect welding line defect;
the third welding line and the eighth welding line are arranged in a staggered mode, and the second welding line and the seventh welding line are arranged in a staggered mode;
the welding seam on the right side of the tank body and the welding seam on the left side of the tank body are symmetrically arranged;
the welding method of the defect of the circular-segment welding line adopts argon arc welding, and a blowing device is used for blowing the part being welded in the welding process;
when the strip-lacking welding seam defect is welded, a small amount of welding slag is placed at the position where the strip-lacking seam is needed to be generated between layers, and then welding is continued;
the non-fusion weld defects reduce the welding current to a minimum current less than the process requirements during welding;
reducing the welding current to be less than the minimum current required by the process when the incomplete penetration weld joint defect is welded;
when the crack weld defects are welded, a section of copper wire with the diameter of 1mm and the length of 10mm is placed between layers (the length can be adjusted according to the length of the crack which needs to be generated);
The inner surface of the simulation container is provided with a plurality of probes, the top and the bottom of the simulation container are respectively provided with one probe, other probes are uniformly distributed around a welding line, and the probes adopt acoustic emission sensors;
and lifting devices are arranged below two adjacent supports at the bottom of the simulation container, and the lifting devices adopt hydraulic oil cylinders to simulate the state of uneven settlement of the tank body.
The above is only a specific application example of the present invention, and the protection scope of the present invention is not limited in any way. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.
Claims (10)
1. A simulated container for prefabricating a plurality of defects, the simulated container comprising: the spherical storage tank comprises a tank body, wherein the tank body is a spherical storage tank, and a first welding seam, a second welding seam, a third welding seam, a fourth welding seam, a fifth welding seam, a sixth welding seam, a seventh welding seam, an eighth welding seam, a ninth welding seam, a tenth welding seam and an eleventh welding seam are arranged on the tank body; the sixth welding line is arranged on the transverse center line of the tank body, the first welding line and the eleventh welding line are symmetrically arranged on the upper side and the lower side of the sixth welding line, and the first welding line and the eleventh welding line are arranged in parallel with the sixth welding line; a second welding seam, a third welding seam, a fourth welding seam and a fifth welding seam are uniformly distributed between the first welding seam and the sixth welding seam, and a seventh welding seam, an eighth welding seam, a ninth welding seam and a tenth welding seam are uniformly distributed between the eleventh welding seam and the sixth welding seam; and one or more of five weld defects, namely a circle-lacking weld defect, a strip-lacking weld defect, an unfused weld defect, a penetration-lacking weld defect and a crack weld defect, are respectively arranged on the first weld, the second weld, the third weld, the fourth weld, the fifth weld, the sixth weld, the seventh weld, the eighth weld, the ninth weld, the tenth weld and the eleventh weld.
2. A simulated container for prefabricating a plurality of defects according to claim 1, wherein: the left part of the longitudinal center line of the left side of the tank body between the first welding line and the sixth welding line is a first area, and a third welding line is arranged in the first area; the right part of the longitudinal center line of the left side of the tank body between the first welding line and the sixth welding line is a second area, and a second welding line is arranged in the second area; the left part of the longitudinal center line of the left side of the tank body between the eleventh welding line and the sixth welding line is a third area, and an eighth welding line is arranged in the third area; the right part of the longitudinal center line of the left side of the tank body between the eleventh welding line and the sixth welding line is a fourth area, and a seventh welding line is arranged in the fourth area; the left part of the longitudinal center line on the right side of the tank body between the first welding line and the sixth welding line is a fifth area, and a fifth welding line is arranged in the fifth area; the right part of the longitudinal center line on the right side of the tank body between the first welding line and the sixth welding line is a sixth area, and a fourth welding line is arranged in the sixth area; the left part of the longitudinal center line on the right side of the tank body between the eleventh welding line and the sixth welding line is a seventh area, and a tenth welding line is arranged in the seventh area; the right part of the longitudinal center line on the right side of the tank body between the eleventh welding line and the sixth welding line is an eighth area, and a ninth welding line is arranged in the eighth area.
3. A simulated container for prefabricating a plurality of defects according to claim 2, wherein: the third welding line and the eighth welding line are arranged in a staggered mode, and the second welding line and the seventh welding line are arranged in a staggered mode.
4. A simulated container for prefabricating a plurality of defects according to claim 2, wherein: and the welding seam on the right side of the tank body and the welding seam on the left side of the tank body are symmetrically arranged.
5. A simulated container for prefabricating a plurality of defects and a method for making the same as claimed in claim 1, wherein: the lower part of the tank body is provided with four support supports, and a lifting device is arranged below two adjacent support supports in the four support supports.
6. A simulated container for prefabricating a plurality of defects according to claim 1, wherein: the top surface of the tank body is provided with an upper end enclosure, and a probe is arranged in the upper end enclosure.
7. A simulated container for prefabricating a plurality of defects according to claim 1, wherein: the bottom surface of the tank body is provided with a manhole cylinder, and a probe is arranged in the manhole cylinder.
8. A simulated container for prefabricating a plurality of defects according to claim 1, wherein: the joint of each welding seam is provided with a probe.
9. A method for preparing a simulated container with a plurality of prefabricated defects is characterized by comprising the following steps:
preparing a steel spherical tank as a simulation container;
four support supports are arranged at the bottom of the steel spherical tank body;
arranging a plurality of welding seams on the surface of the tank body, wherein the welding seams comprise a first welding seam, a second welding seam, a third welding seam, a fourth welding seam, a fifth welding seam, a sixth welding seam, a seventh welding seam, an eighth welding seam, a ninth welding seam, a tenth welding seam and an eleventh welding seam, the sixth welding seam is arranged on the transverse center line of the tank body, the first welding seam and the eleventh welding seam are symmetrically arranged on the upper side and the lower side of the sixth welding seam, and the first welding seam and the eleventh welding seam are arranged in parallel with the sixth welding seam; the left part of the left longitudinal center line of the left side of the tank body between the first welding line and the sixth welding line is a first area, a third welding line is arranged in the first area, the right part of the left longitudinal center line of the tank body between the first welding line and the sixth welding line is a second area, a second welding line is arranged in the second area, the left part of the left longitudinal center line of the left side of the tank body between the eleventh welding line and the sixth welding line is a third area, an eighth welding line is arranged in the third area, the right part of the left longitudinal center line of the left side of the tank body between the eleventh welding line and the sixth welding line is a fourth area, a seventh welding line is arranged in the fourth area, the left part of the right longitudinal center line of the tank body between the first welding line and the sixth welding line is a fifth area, the right part of the right longitudinal center line of the tank body between the first welding line and the sixth welding line is a sixth area, and the left part of the right longitudinal center line of the tank body between the eleventh welding line and the sixth welding line is a seventh area, the right part of the longitudinal center line of the right side of the tank body between the eleventh welding line and the sixth welding line is an eighth area, the third welding line and the eighth welding line are arranged in a staggered mode, the second welding line and the seventh welding line are arranged in a staggered mode, and the welding line of the right side of the tank body and the welding line of the left side of the tank body are symmetrically arranged;
One or more welding seam defects of round, strip, unfused, incomplete penetration and crack welding seam defects are manufactured on each welding seam;
the inner surface of the simulation container is provided with a plurality of probes, the top and the bottom of the simulation container are respectively provided with one probe, and other probes are uniformly distributed around the welding line;
and lifting devices are arranged below two adjacent supports at the bottom of the simulation container, and the lifting devices adopt hydraulic oil cylinders to simulate the state of uneven settlement of the tank body.
10. A method of making a simulated container for prefabricating a plurality of defects according to claim 9 wherein:
the welding method of the defect of the circular-segment welding line adopts argon arc welding, and a blowing device is used for blowing the part being welded in the welding process;
when the strip-lacking welding seam defect is welded, a small amount of welding slag is placed at the position where the strip-lacking seam is needed to be generated between layers, and then welding is continued;
the non-fusion weld defects reduce the welding current to a minimum current less than the process requirements during welding;
reducing the welding current to be less than the minimum current required by the process when the incomplete penetration weld joint defect is welded;
when the crack welding seam defect is welded, a section of copper wire is placed between layers, the diameter of the copper wire is 0.5-2 mm, and the length of the copper wire is adjusted according to the length of a crack generated as required.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210341777.9A CN114839276A (en) | 2022-04-02 | 2022-04-02 | Simulation container for prefabricating various defects and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210341777.9A CN114839276A (en) | 2022-04-02 | 2022-04-02 | Simulation container for prefabricating various defects and preparation method thereof |
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