CN217332305U - Quenching heat exchanger deep hole butt welding phased array detection device - Google Patents
Quenching heat exchanger deep hole butt welding phased array detection device Download PDFInfo
- Publication number
- CN217332305U CN217332305U CN202220878981.XU CN202220878981U CN217332305U CN 217332305 U CN217332305 U CN 217332305U CN 202220878981 U CN202220878981 U CN 202220878981U CN 217332305 U CN217332305 U CN 217332305U
- Authority
- CN
- China
- Prior art keywords
- scanning
- pipe
- phased array
- hole
- heat exchanger
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000003466 welding Methods 0.000 title claims abstract description 30
- 238000001514 detection method Methods 0.000 title claims abstract description 25
- 238000010791 quenching Methods 0.000 title claims abstract description 25
- 230000000171 quenching effect Effects 0.000 title claims abstract description 19
- 238000007789 sealing Methods 0.000 claims abstract description 41
- 239000000523 sample Substances 0.000 claims abstract description 22
- 238000001816 cooling Methods 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 4
- 238000006467 substitution reaction Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000009659 non-destructive testing Methods 0.000 description 2
- 238000010408 sweeping Methods 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Heat Treatment Of Articles (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The utility model relates to the technical field of heat exchange tube weld joint detection, in particular to a quenching heat exchanger deep hole butt welding phased array detection device, which comprises a scanning tube, a tube end positioning mechanism, a sealing element, a mounting plate, a rack, an axial translation mechanism and a phased array probe; the left end part of the scanning pipe is provided with a pipe end positioning mechanism; an end face sealing assembly is arranged on the left side face of the mounting plate; a rack is fixedly arranged at the edge of the right side surface of the mounting plate; the axial translation mechanism is fixedly arranged on the outer wall of the scanning pipe and is meshed with the rack; the side wall of the scanning pipe is provided with a scanning hole; the phased array probe is arranged in the scanning hole in a matching mode. Compared with the prior art, the phased array probe can be tightly attached to the inner wall of the heat exchange tube, the position of the scanning hole can be adjusted by the axial translation mechanism, the part needing to be scanned near the welding position of the inner wall of the heat exchange tube of the quenching heat exchanger is aligned, then the scanning tube is rotated, and circumferential detection is carried out on the welding position.
Description
Technical Field
The utility model relates to a heat exchange tube welding seam detects technical field, specifically discloses a rapid cooling heat exchanger deep hole butt welding phased array detection device.
Background
The quench heat exchanger is a key piece of equipment in an ethylene cracking plant. The quenching heat exchanger adopts a deep hole welding structure, nondestructive testing can be carried out only by adopting a ray detection mode after welding, the detection efficiency is extremely low, and the factors influenced by the detection conditions are large.
At present, a novel nondestructive testing device for deep-hole butt welding of a quenching heat exchanger, which replaces ray detection, needs to be developed urgently.
SUMMERY OF THE UTILITY MODEL
The above-mentioned not enough to prior art, the utility model provides a rapid cooling heat exchanger deep hole butt welding phased array detection device to the solution detects the problem to rapid cooling heat exchanger heat exchange tube welding department.
In order to achieve the above purpose, the technical scheme of the utility model is that:
a rapid cooling heat exchanger deep hole butt welding phased array detection device comprises a scanning pipe, a pipe end positioning mechanism, a sealing element, a mounting plate, a rack, an axial translation mechanism and a phased array probe; the left end part of the scanning pipe is provided with a pipe end positioning mechanism; the sealing element and the pipe end positioning mechanism are arranged on the outer wall of the scanning pipe at a certain distance; an end face sealing assembly is arranged on the left side face of the mounting plate; a rack is fixedly arranged at the edge of the right side surface of the mounting plate; the axial translation mechanism is fixedly arranged on the outer wall of the scanning pipe and is meshed with the rack; the side wall of the scanning pipe is provided with a scanning hole; the scanning hole is arranged between the sealing element and the mounting plate; a boss I is arranged in the scanning pipe in a matching mode with the scanning hole; a first spring is arranged on the first boss; the other end of the spring is connected with the phased array probe; the phased array probe is arranged in the scanning hole in a matching manner; the right side end of the scanning pipe is provided with a handle. The pipe end positioning mechanism is used for ensuring the coaxiality of the sweeping pipe and the heat exchange pipe of the quenching heat exchanger. The arrangement of the end face sealing assembly and the sealing piece ensures the space sealing between the end face sealing assembly and the sealing piece and ensures the stable operation of the phased array probe in the scanning hole. The arrangement of the rack and the axial translation mechanism can drive the scanning pipe to translate along the rack through the axial translation mechanism, and the distance between the scanning hole and the mounting plate can be adjusted; when the device is used, the mounting plate is buckled at the pipe end of the heat exchange pipe of the quenching heat exchanger by using the end face sealing assembly, the position of the scanning hole is adjusted by the axial translation mechanism, the position needing to be detected near the welding position of the inner wall of the heat exchange pipe of the quenching heat exchanger is aligned, then the pipe is scanned by rotating the handle, and the circumferential detection is carried out on the welding position. The boss I and the spring I are arranged, so that the phased array probe can be ensured to be attached to the inner wall of the heat exchange tube of the quenching heat exchanger as much as possible, and the detection accuracy is improved.
Preferably, the end face sealing assembly comprises a second boss and a first annular groove arranged on the second boss; the scanning pipe penetrates through the second boss; and a sealing element is arranged on one inner wall of the circular groove. The arrangement of the first annular groove facilitates the insertion and fixation of the heat exchange tube of the rapid cooling heat exchanger, and the sealing element on the inner wall of the first annular groove is used for sealing.
Preferably, a water inlet pipe is arranged on the second boss, water can be introduced into a sealing space formed by the sealing element and the end face sealing assembly between the outer wall of the scanning pipe and the inner wall of the heat exchange pipe of the quenching heat exchanger, a coupling agent is provided for the work of the phased array probe, and the detection accuracy is further improved.
Preferably, the axial translation mechanism comprises a translation plate, a stepper motor and a gear shaft; the middle part of the translation plate is provided with a first through hole in a matching manner with the scanning pipe; a positioning pin is arranged on the inner wall of the through hole; a second annular groove is formed in the outer wall of the scanning pipe in a matched mode with the positioning pin; the gear shaft is rotatably arranged on the flat plate and meshed with the rack; the output end of the stepping motor is connected with a gear shaft. Through the setting of locating pin and ring groove two, can guarantee to sweep to look into the pipe and utilize the handle to carry out the translation of rotating, can also drive through step motor and gear shaft and sweep to look into the pipe along the rack direction, conveniently detect many welds on the same root rapid cooling heat exchanger heat exchange tube inner wall.
Preferably, a sliding groove is arranged at the edge of one side of the translation plate; a guide rod is arranged on the right side surface of the mounting plate; the guide rod is arranged in the sliding groove, so that the moving stability of the translation plate is ensured.
Preferably, the pipe end positioning mechanism comprises two pipe clamps and a positioning device; the positioning assembly is arranged between the two pipe clamps in a matching manner; the positioning device comprises a main body, a cover plate and a positioning assembly; the main body is provided with a groove along the circumferential direction; a second through hole is formed in the peripheral wall of the main body in a matching manner with the groove; a third boss is radially arranged in the groove; the positioning assembly comprises a second spring and a ball; the spring sleeve is arranged outside the boss III; one end of the second spring is connected with the ball; the ball is arranged in the second through hole in a matched mode. Through the setting of locating component, guaranteed to sweep the axiality of pipe and rapid cooling heat exchanger heat exchange tube, guaranteed detection efficiency.
The utility model has the advantages that: the axial translation mechanism can be used for adjusting the position of the scanning hole to align to the position needing to be detected near the welding position of the inner wall of the heat exchange tube of the quenching heat exchanger, and then the handle is used for rotating the scanning tube to detect the welding position in the circumferential direction.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a schematic cross-sectional structure diagram of an embodiment of the present invention;
FIG. 3 is an enlarged schematic view of the structure at A in FIG. 2;
FIG. 4 is an enlarged view of the structure at B in FIG. 2;
FIG. 5 is an enlarged view of the structure at C in FIG. 2;
fig. 6 is a schematic structural view of a mounting plate, a rack and a guide rod according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of an axial translation mechanism according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a positioning device according to an embodiment of the present invention;
description of reference numerals:
1-scanning pipe, 2-sealing element, 3-mounting plate, 4-rack, 5-phased array probe, 6-translation plate, 7-stepping motor, 8-gear shaft, 9-guide rod, 10-pipe clamp, 11-main body, 12-cover plate, 13-spring II, 14-ball, 15-stepping motor encoder and 16-scanning encoder;
101-scanning a hole, 102-a boss I, 103-a spring I, 104-a handle and 105-a circular groove II;
301-boss two, 302-circular groove one, 303-water inlet pipe;
601-a first through hole, 602-a positioning pin and 603-a sliding chute;
1101-grooves; 1102-through hole two, 1103-boss three.
Detailed Description
In order to make the technical solutions in the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Example 1
As shown in fig. 1-3, a rapid cooling heat exchanger deep hole butt welding phased array detection device comprises a scanning pipe 1, a pipe end positioning mechanism, a sealing element 2, a mounting plate 3, a rack 4, an axial translation mechanism and a phased array probe 5; a pipe end positioning mechanism is arranged at the left end part of the scanning pipe 1; the sealing element 2 and the pipe end positioning mechanism are arranged on the outer wall of the scanning pipe 1 at a certain distance; an end face sealing assembly is arranged on the left side face of the mounting plate 3; a rack 4 is fixedly arranged at the edge of the right side surface of the mounting plate 3; the axial translation mechanism is fixedly arranged on the outer wall of the scanning pipe 1 and is meshed with the rack 4; a scanning hole 101 is formed in the side wall of the scanning pipe 1; the scanning hole 101 is arranged between the sealing element 2 and the mounting plate 3; a boss I102 is arranged in the scanning pipe 1 in a matching manner with the scanning hole 101; a first spring 103 is arranged on the first boss 102; the other end of the first spring 103 is connected with the phased array probe 5; the phased array probe 5 is arranged in the scanning hole 101 in a matching manner; the right end of the scanning tube 1 is provided with a handle 104. The pipe end positioning mechanism is used for ensuring the coaxiality of the sweeping pipe 1 and the heat exchange pipe of the quenching heat exchanger. The arrangement of the end face sealing assembly and the sealing element 2 ensures the space sealing between the end face sealing assembly and the sealing element and ensures the stable work of the phased array probe 5 in the scanning hole 101. The arrangement of the rack 4 and the axial translation mechanism can drive the scanning pipe 1 to translate along the rack 4 through the axial translation mechanism, and can adjust the distance between the scanning hole 101 and the mounting plate 3; when the rapid cooling heat exchanger is used, the mounting plate 3 is buckled at the pipe end of the heat exchange pipe of the rapid cooling heat exchanger by using the end face sealing assembly, the position of the scanning hole 101 is adjusted by the axial translation mechanism to be aligned with the position needing to be detected near the welding position of the inner wall of the heat exchange pipe of the rapid cooling heat exchanger, the scanning pipe 1 is rotated by using the handle 104, and circumferential detection is carried out on the welding position. The arrangement of the boss I102 and the spring I103 can ensure that the phased array probe 5 is attached to the inner wall of the heat exchange tube of the quenching heat exchanger as much as possible, and the detection accuracy is improved. When the phased array probe is used, the phased array probe 5 is matched with the scanning hole 101 to be provided with a sealing piece.
As shown in fig. 2, 4 and 6, the end face seal assembly comprises a second boss 301 and a first annular groove 302 arranged on the second boss 301; the scanning pipe 1 penetrates through the second boss 301; and a sealing element is arranged on the inner wall of the first annular groove 302. The second boss 301 is provided with a water inlet pipe 303. The first annular groove 302 is convenient for the heat exchange tube of the quenching heat exchanger to be inserted and fixed, and the sealing element on the inner wall of the first annular groove 302 is used for sealing. Can let in water in the sealed space that forms through sealing member 2 and end face seal subassembly between scanning 1 outer wall of pipe and quench heat exchanger heat exchange tube inner wall, for phased array probe 5's work provides the couplant, further improves and detects the accuracy. In order to ensure the buckling stability of the mounting plate 3 and the end face sealing assembly with the tube end of the heat exchange tube of the quenching heat exchanger, the mounting plate 3 and the second boss 301 are made of magnetic materials.
As shown in fig. 1, 2, 3, 5, 7, the axial translation mechanism includes a translation plate 6, a stepping motor 7, and a gear shaft 8; the middle part of the translation plate 6 is provided with a first through hole 601 matched with the scanning pipe 1; a positioning pin 602 is arranged on the inner wall of the first through hole 601; a second annular groove 105 is formed in the outer wall of the scanning pipe 1 in a matched mode with the positioning pin 602; the gear shaft 8 is rotatably arranged on the flat plate 6, and the gear shaft 8 is meshed with the rack 4; the output end of the stepping motor 7 is connected with a gear shaft 8. A sliding groove 603 is arranged at the edge of one side of the translation plate 6; a guide rod 9 is arranged on the right side of the mounting plate 3; the guide rod 9 is arranged in the sliding groove 603, so that the moving stability of the translation plate 6 is ensured. Through the setting of locating pin 602 and two 105 in the ring groove, can guarantee to sweep pipe 1 and utilize handle 104 to rotate the time, can also drive through step motor 7 and gear shaft 8 and sweep the translation of pipe 1 along the 4 directions of rack, conveniently detect the many places welding on the same root rapid cooling heat exchanger heat exchange tube inner wall.
As shown in fig. 1 and 8, the pipe end positioning mechanism includes a two-piece pipe clamp 10 and a positioning device; the positioning assembly is arranged between the two pipe clamps 10 in a matching way; the positioning device comprises a main body 11, a cover plate 12 and a positioning component; the main body 11 is provided with a groove 1101 in the circumferential direction; a second through hole 1102 is formed in the matching groove 1101 in the outer peripheral wall of the main body 11; boss three 1103 is radially arranged in the groove 1101; the positioning assembly comprises a second spring 13 and a ball 14; the second spring 13 is sleeved outside the third boss 1103; one end of the second spring 13 is connected with a ball 14; the ball 14 is fittingly disposed in the second through hole 1102. Through the setting of locating component, guaranteed to scan the axiality of looking into pipe 1 and rapid cooling heat exchanger heat exchange tube, guaranteed detection efficiency.
In use, the rotation of the stepper motor 7, and hence the translation of the translating plate 6, is controlled by using the stepper motor encoder 15 of the stepper motor 7. And a scanning encoder 16 is arranged by matching with the phased array probe 5, so that the electric control is facilitated.
The quenching heat exchanger deep-hole butt welding phased array detection device can adjust the position of a scanning hole 101 by using an axial translation mechanism, align the position to be detected near the welding position of the inner wall of a quenching heat exchanger heat exchange pipe, and rotate a scanning pipe 1 by using a handle 104 to detect the welding position in the circumferential direction.
Although the present invention has been described in detail by referring to the drawings in conjunction with the preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and substance of the present invention, and these modifications or substitutions are intended to be within the scope of the present invention/any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. A rapid cooling heat exchanger deep hole butt welding phased array detection device is characterized by comprising a scanning pipe (1), a pipe end positioning mechanism, a sealing element (2), a mounting plate (3), a rack (4), an axial translation mechanism and a phased array probe (5); a pipe end positioning mechanism is arranged at the left end part of the scanning pipe (1); the sealing element (2) and the pipe end positioning mechanism are arranged on the outer wall of the scanning pipe (1) at a certain distance; an end face sealing assembly is arranged on the left side face of the mounting plate (3); a rack (4) is fixedly arranged at the edge of the right side surface of the mounting plate (3); the axial translation mechanism is fixedly arranged on the outer wall of the scanning pipe (1), and the axial translation mechanism is meshed with the rack (4); a scanning hole (101) is formed in the side wall of the scanning pipe (1); the scanning hole (101) is arranged between the sealing element (2) and the mounting plate (3); a first boss (102) is arranged in the scanning pipe (1) in a matching manner with the scanning hole (101); a first spring (103) is arranged on the first boss (102); the other end of the first spring (103) is connected with the phased array probe (5); the phased array probe (5) is arranged in the scanning hole (101) in a matching manner; the right end part of the scanning pipe (1) is provided with a handle (104).
2. The phased array detection device for deep hole butt welding of the quench heat exchanger as claimed in claim 1, wherein the end face seal assembly comprises a second boss (301) and a first annular groove (302) arranged on the second boss (301); the scanning pipe (1) penetrates through the second boss (301); and a sealing element is arranged on the inner wall of the first annular groove (302).
3. The quenching heat exchanger deep-hole butt welding phased array detection device as claimed in claim 2, wherein a water inlet pipe (303) is arranged on the second boss (301).
4. The phased array inspection device for deep hole butt welding of a quench heat exchanger as claimed in claim 1, wherein the axial translation mechanism comprises a translation plate (6), a stepping motor (7) and a gear shaft (8); the middle part of the translation plate (6) is provided with a first through hole (601) in cooperation with the scanning pipe (1); a positioning pin (602) is arranged on the inner wall of the first through hole (601); a second annular groove (105) is formed in the outer wall of the scanning pipe (1) in a matched mode with the positioning pin (602); the gear shaft (8) is rotatably arranged on the translation plate (6), and the gear shaft (8) is meshed with the rack (4); the output end of the stepping motor (7) is connected with a gear shaft (8).
5. The phased array detection device for deep-hole butt welding of a quench heat exchanger according to claim 4, characterized in that a chute (603) is arranged at one side edge of the translation plate (6); a guide rod (9) is arranged on the right side surface of the mounting plate (3); the guide rod (9) is arranged in the sliding groove (603).
6. The phased array inspection device for deep hole butt welding of a quench heat exchanger as recited in claim 1, wherein the pipe end positioning mechanism comprises two pipe clamps (10) and a positioning device; the positioning device is arranged between the two pipe clamps (10) in a matching way; the positioning device comprises a main body (11), a cover plate (12) and a positioning assembly; the main body (11) is provided with a groove (1101) along the circumferential direction; a second through hole (1102) is formed in the matching groove (1101) on the outer peripheral wall of the main body (11); a boss III (1103) is radially arranged in the groove (1101); the positioning assembly comprises a second spring (13) and a ball (14); the second spring (13) is sleeved outside the third boss (1103); one end of the second spring (13) is connected with a ball (14); the ball (14) is arranged in the second through hole (1102) in a matched mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220878981.XU CN217332305U (en) | 2022-04-16 | 2022-04-16 | Quenching heat exchanger deep hole butt welding phased array detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220878981.XU CN217332305U (en) | 2022-04-16 | 2022-04-16 | Quenching heat exchanger deep hole butt welding phased array detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217332305U true CN217332305U (en) | 2022-08-30 |
Family
ID=82947323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220878981.XU Active CN217332305U (en) | 2022-04-16 | 2022-04-16 | Quenching heat exchanger deep hole butt welding phased array detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217332305U (en) |
-
2022
- 2022-04-16 CN CN202220878981.XU patent/CN217332305U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5408883A (en) | Remotely operated diagnostic tube sampling device and method of sampling | |
| US4955235A (en) | Apparatus and method for providing a combined ultrasonic and eddy current inspection of a metallic body | |
| KR20100039702A (en) | An automated ultrasonic scanner for dissimilar metal weld | |
| JPH04301797A (en) | Apparatus for ultrasonic non-destructive inspection for slender part having substantially constant cross section | |
| JPH0280949A (en) | Nondestructive ultrasonic test apparatus of circular welding section of inside of tube of steam generator | |
| CN217332305U (en) | Quenching heat exchanger deep hole butt welding phased array detection device | |
| US6526114B2 (en) | Remote automated nuclear reactor jet pump diffuser inspection tool | |
| JP2008151765A (en) | Inspection apparatus for reactor vessel bottom penetrating tube (inspection apparatus for reactor bottom mounted instrumentation nozzle) | |
| US20120183114A1 (en) | Method and apparatus for testing an annular weld on a main coolant line connected to a reactor pressure vessel of a nuclear power plant | |
| CN219533017U (en) | Ultrasonic wave water logging detects platform | |
| JP2007003400A (en) | Inspection device for control rod through-hole member | |
| CN110006998B (en) | Detection system and detection method for detecting welding seam of hollow pipe fitting | |
| CN216082767U (en) | Biochemical detection device | |
| CN207717709U (en) | One kind taking over surfaces externally and internally ultrasonic examination tool before manufacture | |
| CN221224694U (en) | Fillet weld phased array detection probe with detachable plug | |
| CN215263209U (en) | Workpiece nondestructive testing device | |
| CN221224695U (en) | Phased array detection probe device convenient to locate in middle | |
| JP2002148385A (en) | In-reactor line inspection apparatus | |
| JPH0363039B2 (en) | ||
| CN212008421U (en) | Simulation test piece for ultrasonic phased array detection of butt weld of small-diameter pipe | |
| CN221224696U (en) | Probe device for detecting fillet weld phased array | |
| CN210982335U (en) | Detection device for high-temperature pipeline flaw detection | |
| JPH102988A (en) | Sampling device of heat exchanger heat-transfer pipe | |
| CN221224693U (en) | Fillet weld phased array detection probe convenient to exhaust | |
| CN217278070U (en) | Scanning device for phased array ultrasonic detection of pipeline weld joint |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20231201 Granted publication date: 20220830 |
|
| PP01 | Preservation of patent right |