CN220084766U - Ultrasonic detection device for circumferential weld of detection section of steam injection boiler - Google Patents
Ultrasonic detection device for circumferential weld of detection section of steam injection boiler Download PDFInfo
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- CN220084766U CN220084766U CN202321484458.XU CN202321484458U CN220084766U CN 220084766 U CN220084766 U CN 220084766U CN 202321484458 U CN202321484458 U CN 202321484458U CN 220084766 U CN220084766 U CN 220084766U
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- 238000001514 detection method Methods 0.000 title claims abstract description 95
- 238000010793 Steam injection (oil industry) Methods 0.000 title claims abstract description 23
- 230000007246 mechanism Effects 0.000 claims abstract description 22
- 238000005096 rolling process Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 8
- 238000000034 method Methods 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Classifications
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- 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
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- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The utility model discloses an ultrasonic detection device for a circumferential weld of a detection section of a steam injection boiler, and relates to the technical field of accessory detection for the steam injection boiler. The ultrasonic detection device comprises a base, a to-be-detected piece arranged above the base and an ultrasonic detection mechanism arranged above the to-be-detected piece, wherein two ends of the to-be-detected piece are in sliding sleeve joint with a fastening cover, the outer side of the fastening cover is coaxially provided with a linkage disc, a first bolt column is in spiral sleeve joint on the linkage disc, a first limiting ring is fixedly arranged on the side wall of one end of the first bolt column, and a first limiting groove for clearance fit of the first limiting ring is formed in one end face of the fastening cover; the side wall of the linkage disc is fixedly provided with ring teeth, the gear disc is meshed below the ring teeth, the two gear discs are fixedly connected to the same rotating shaft, and one end of the rotating shaft is embedded into the output end of the motor. The device has the advantages of simple detection operation of the part to be detected, effective reduction of labor intensity, zigzag detection along the circumferential weld and good detection effect.
Description
Technical Field
The utility model belongs to the technical field of accessory detection for steam injection boilers, and particularly relates to an ultrasonic detection device for a circumferential weld of a detection section of a steam injection boiler.
Background
The thick oil is an important resource for world economic development, but because the thick oil has higher viscosity and higher flow resistance, the exploitation difficulty is high, the most effective method in thick oil exploitation is a steam injection thermal exploitation method, the viscosity of the thick oil is reduced by injecting high-temperature and high-pressure wet steam into an oil well so as to facilitate exploitation, wherein the dryness of the wet steam is a main index in the thick oil thermal exploitation technology, the method not only relates to the quality of the extracted thick oil, but also has a non-negligible effect on the safe operation of oil extraction equipment of an oil field, and in order to ensure the quality and the quality of the extracted thick oil, the dryness of steam at a boiler outlet is the most critical parameter in the operation of a steam injection boiler;
through multiple experiments and researches, the petrochemical university finally finds an effective method for calculating the steam dryness value of the steam injection boiler, which is called as a volume change type, and the method is characterized in that after the water supply of the steam injection boiler is heated, the water becomes wet steam at an outlet, the volume of the water becomes water steam, and when the steam dryness of the outlet is higher, the generated steam volume is more, so that a certain functional relation exists between the steam dryness of the outlet and the steam volume of the outlet;
the technology is characterized in that a primary instrument signal required by the steam dryness is realized through a detection section, the primary instrument signal is connected with a dryness monitoring instrument cabinet, when fluid flows through the detection section, a flow difference is generated, so that a flow change value of the fluid is measured, the flow change value is used for measuring the steam dryness value of a steam injection boiler, and the safety and stability of the boiler are ensured, therefore, the working state of the detection section and the quality of production and manufacture directly influence the accuracy of a test result;
the nozzle type detection section is a novel detection section newly developed in recent years, has the advantages of easy processing, corrosion resistance, simple assembly and more firm connection with a cylinder body, and mainly has the advantages that the steam dryness parameter detected by the nozzle type detection section is stable, the detection section needs to overlap a nozzle and then weld the welding seam of two butt cylinder walls by tungsten electrode gas shielded welding, so the requirements on welding technology are very high, fine nondestructive detection treatment is required after welding, only products passing through nondestructive detection and inspection can be applied, and during detection, an ultrasonic detection device can be used for carrying out nondestructive ultrasonic detection on the welding seam, but the conventional ultrasonic detection device has the following defects in actual use:
1. in order to improve the detection effect of the detection section, the ultrasonic detection device moves along the circumferential direction of the detection section during actual operation, but because the detection section is placed at a preset position during detection, the operation is troublesome when a worker detects, manual assistance is required for the worker, and the practicability is poor;
2. in order to improve the detection effect of the detection section, the ultrasonic detection device needs to perform zigzag movement detection along the circumferential direction of the girth weld in actual operation, but because the conventional ultrasonic detection device is fixedly arranged, the operation is difficult to complete, so that the detection effect is poor;
accordingly, there is a need for improvements in the art to address the above-described problems.
Disclosure of Invention
The utility model aims to provide an ultrasonic detection device for a detection section girth weld of a steam injection boiler, which is simple to operate and good in detection effect, and solves the problems of complex operation and poor detection effect of the existing ultrasonic detection device for the detection section girth weld in actual use.
In order to solve the technical problems, the utility model is realized by the following technical scheme:
the utility model relates to an ultrasonic detection device for a circumferential weld of a detection section of a steam injection boiler, which comprises a base, a to-be-detected piece arranged above the base and an ultrasonic detection mechanism arranged above the to-be-detected piece, wherein two ends of the to-be-detected piece are in sliding sleeve joint with a fastening cover, the outer side of the fastening cover is coaxially provided with a linkage disc, a first bolt column is in spiral sleeve joint on the linkage disc, a first limiting ring is fixedly arranged on the side wall of one end of the first bolt column, and a first limiting groove for clearance fit of the first limiting ring is formed in one end face of the fastening cover; the side wall of the linkage disc is fixedly provided with ring teeth, the gear disc is meshed below the ring teeth, the two gear discs are fixedly connected to the same rotating shaft, one end of the rotating shaft is embedded into the output end of the motor, and the motor is fixedly connected to the base.
Further, the mounting plate has been cup jointed in the outside of gangway, has set firmly the holding ring that the cross-section is T shape along circumference on the lateral wall of gangway, has opened and shut on the mounting plate and has the constant head tank that is used for holding ring clearance fit.
Further, the bottom surface both sides of mounting panel are all through backup pad and base fixed connection, and fixedly connected with is used for the axis of rotation to pass through antifriction bearing rotation connection's locating plate between two backup pads of mounting panel below.
Further, the top of ultrasonic detection mechanism is provided with the rectangle frame, has set firmly T shape piece on ultrasonic detection mechanism's the top surface, and the top surface one side of T shape piece has set firmly the connecting plate, has set firmly electric putter on the side of connecting plate, and electric putter's fixed section fixed connection is on the top surface of rectangle frame.
Further, a sliding groove for clearance fit of the T-shaped block is formed in the inner side of the rectangular frame, the T-shaped block is sleeved on the guide post in a sliding mode, and two ends of the guide post are fixedly arranged on the inner wall of the sliding groove.
Further, a linkage plate is arranged on one side of the rectangular frame, a second bolt column is spirally sleeved in the middle of the linkage plate, a second limiting ring is fixedly arranged on the side wall of one end of the second bolt column, and a second limiting groove for clearance fit of the second limiting ring is formed in the side wall of the rectangular frame; the side walls of the rectangular frames on two sides of the second limiting groove are fixedly provided with first guide rods, and the free ends of the first guide rods are sleeved on the linkage plates in a sliding manner.
Further, a vertical plate is fixedly arranged on the base below the linkage plate, connecting lugs are fixedly arranged at two ends of the linkage plate, a second guide rod is sleeved in one connecting lug in a sliding manner, and a third bolt column is sleeved in the other connecting lug in a spiral manner; the second guide rod is fixedly connected to the top surface of the vertical plate, a third limiting ring is fixedly arranged on the side wall of the lower end of the third bolt column, and a third limiting groove for clearance fit of the third limiting ring is formed in the top surface of the vertical plate.
Further, a controller is arranged on one side surface of the vertical plate and is electrically connected with the motor, the ultrasonic detection mechanism and the electric push rod through conducting wires.
The utility model has the following beneficial effects:
1. when the ultrasonic detection device is used, a worker firstly fixes the part to be detected at the position between the two fastening covers, after the assembly is completed, the work of the motor is controlled by the controller, so that the rotating shaft can drive the two gear plates to synchronously rotate.
2. When the ultrasonic detection device is used, the reciprocating motion of the T-shaped block in the sliding groove can be realized through the telescopic motion of the electric push rod, so that the ultrasonic detection mechanism can reciprocate along the axis direction of the to-be-detected piece, and the ultrasonic detection mechanism can move in a zigzag manner on the girth weld by matching with the rotation of the to-be-detected piece, thereby improving the detection effect and achieving good practicability.
Of course, it is not necessary for any one product to practice the utility model to achieve all of the advantages set forth above at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of an ultrasonic detection device for the circumferential weld of the detection section of a steam-injection boiler;
FIG. 2 is a rear elevational view of the FIG. 1 structure;
fig. 3 is an exploded view of the structure of fig. 1.
In the drawings, the list of components represented by the various numbers is as follows:
1. a base; 2. a gear plate; 3. a linkage disc; 4. a fastening cover; 5. a piece to be detected; 6. an ultrasonic detection mechanism; 7. a rectangular frame; 8. a linkage plate; 101. a mounting plate; 102. a vertical plate; 201. a rotating shaft; 202. a motor; 301. a first bolt post; 302. ring teeth; 303. a positioning ring; 401. a first limit groove; 601. a T-shaped block; 701. a sliding groove; 702. a guide post; 703. a first guide bar; 704. the second limit groove; 801. a third bolt post; 802. a connecting lug; 803. a second bolt post; 1011. a support plate; 1012. a positioning plate; 1013. a positioning groove; 1021. a controller; 1022. a second guide bar; 1023. a third limit groove; 3011. a first stop collar; 6011. a connecting plate; 6012. an electric push rod; 8011. a third limiting ring; 8031. and a second limiting ring.
Detailed Description
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.
Referring to fig. 1 to 3, the utility model discloses an ultrasonic detection device for a circumferential weld of a detection section of a steam injection boiler, which comprises a base 1, a to-be-detected piece 5 arranged above the base 1 and an ultrasonic detection mechanism 6 arranged above the to-be-detected piece 5, wherein the ultrasonic detection mechanism 6 can emit ultrasonic waves to realize nondestructive detection of the to-be-detected piece 5, and because the prior art is not repeated herein, two ends of the to-be-detected piece 5 are slidably sleeved with a fastening cover 4, the outer side of the fastening cover 4 is coaxially provided with a linkage disc 3, the linkage disc 3 is spirally sleeved with a first bolt post 301, one end side wall of the first bolt post 301 is fixedly provided with a first limiting groove 401 for clearance fit of the first limiting ring 3011, on one end face of the fastening cover 4 can realize free rotation of the first bolt post 301, and on the other hand, limit of one end of the first bolt post 301 can be realized;
the side wall of the linkage disc 3 is fixedly provided with ring teeth 302, the gear discs 2 are meshed below the ring teeth 302, the two gear discs 2 are fixedly connected to the same rotating shaft 201, one end of the rotating shaft 201 is embedded into the output end of the motor 202, and the motor 202 is fixedly connected to the base 1;
the outside of the linkage disc 3 is sleeved with a mounting plate 101, a positioning ring 303 with a T-shaped section is fixedly arranged on the side wall of the linkage disc 3 along the circumferential direction, a positioning groove 1013 for clearance fit of the positioning ring 303 is arranged on the mounting plate 101, and the positioning groove 1013 can play a role in limiting and guiding the rotation of the linkage disc 3;
both sides of the bottom surface of the mounting plate 101 are fixedly connected with the base 1 through support plates 1011, and a positioning plate 1012 for rotationally connecting the rotating shaft 201 through a rolling bearing is fixedly connected between the two support plates 1011 below the mounting plate 101 so as to position the rotating shaft 201;
when the device is used, a worker aligns the fastening cover 4 at two ends of the to-be-detected piece 5, the fastening cover 4 can be extruded to one end of the to-be-detected piece 5 by rotating the first bolt column 301, so that the fastening cover 4 is clamped at two ends of the to-be-detected piece 5, after the to-be-detected piece 5 is clamped fixedly, the worker works at the control motor 202, the rotating shaft 201 can drive the two gear plates 2 to rotate, and the gear plates 2 are meshed with the annular teeth 302, so that the fastening cover 4 drives the to-be-detected piece 5 to rotate by taking the axis of the to-be-detected piece 5 as a shaft, and then the ultrasonic detection mechanism 6 is matched to realize the detection of the annular weld.
As shown in fig. 2 and fig. 3, a rectangular frame 7 is disposed above the ultrasonic detection mechanism 6, a T-shaped block 601 is fixedly disposed on the top surface of the ultrasonic detection mechanism 6, a connecting plate 6011 is fixedly disposed on one side of the top surface of the T-shaped block 601, an electric push rod 6012 is fixedly disposed on one side surface of the connecting plate 6011, and a fixing section of the electric push rod 6012 is fixedly connected to the top surface of the rectangular frame 7;
the inner side of the rectangular frame 7 is provided with a sliding groove 701 for clearance fit of the T-shaped block 601, the T-shaped block 601 is in sliding sleeve connection with the guide column 702, two ends of the guide column 702 are fixedly arranged on the inner wall of the sliding groove 701, and the arrangement can play a role in limiting and guiding the movement of the T-shaped block 601;
a linkage plate 8 is arranged on one side of the rectangular frame 7, a second bolt column 803 is spirally sleeved in the middle of the linkage plate 8, a second limit ring 8031 is fixedly arranged on one end side wall of the second bolt column 803, a second limit groove 704 for clearance fit of the second limit ring 8031 is formed in the side wall of the rectangular frame 7, free rotation of the second bolt column 803 can be achieved through the arrangement, and limit of one end of the second bolt column 803 can be achieved;
the side walls of the rectangular frames 7 on two sides of the second limiting groove 704 are fixedly provided with first guide rods 703, the free ends of the first guide rods 703 are in sliding sleeve connection with the linkage plates 8, and the arrangement can play a role in limiting and guiding the movement of the rectangular frames 7;
a vertical plate 102 is fixedly arranged on the base 1 below the linkage plate 8, connecting lugs 802 are fixedly arranged at two ends of the linkage plate 8, a second guide rod 1022 is sleeved in one connecting lug 802 in a sliding manner, and a third bolt column 801 is sleeved in the other connecting lug 802 in a spiral manner;
the second guide rod 1022 is fixedly connected to the top surface of the vertical plate 102, the arrangement can play a role in limiting and guiding the movement of the linkage plate 8, a third limiting ring 8011 is fixedly arranged on the side wall of the lower end of the third bolt column 801, a third limiting groove 1023 for clearance fit of the third limiting ring 8011 is formed in the top surface of the vertical plate 102, on one hand, the arrangement can realize free rotation of the third bolt column 801, and on the other hand, limit on one end of the third bolt column 801 can be realized;
a controller 1021 is arranged on one side surface of the vertical plate 102, and the controller 1021 is respectively and electrically connected with the motor 202, the ultrasonic detection mechanism 6 and the electric push rod 6012 through conducting wires;
when the ultrasonic detection device is used, the linkage plate 8 can be moved in the vertical direction by rotating the third bolt column 801, so that the ultrasonic detection mechanism 6 can be moved in the vertical direction, the rectangular frame 7 can be moved in the horizontal direction by rotating the second bolt column 803, the ultrasonic detection mechanism 6 can be moved in the horizontal direction, the ultrasonic detection mechanism 6 can be adjusted in a matched mode according to the position of the part 5 to be detected after the adjustment, the electric push rod 6012 is controlled to move in a telescopic mode by the controller 1021 after the adjustment is completed, and the T-shaped block 601 can drive the ultrasonic detection mechanism 6 to reciprocate in the horizontal direction to finish saw-tooth detection.
The foregoing is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, and any modification, equivalent replacement, and improvement of some of the technical features described in the foregoing embodiments are all within the scope of the present utility model.
Claims (8)
1. The utility model provides an ultrasonic detection device for steam injection boiler detects section girth weld, includes base (1), sets up wait to detect piece (5) and ultrasonic detection mechanism (6) of setting in waiting to detect piece (5) top above base (1), its characterized in that: the two ends of the part to be detected (5) are slidably sleeved with a fastening cover (4), the outer side of the fastening cover (4) is coaxially provided with a linkage disc (3), a first bolt column (301) is spirally sleeved on the linkage disc (3), a first limiting ring (3011) is fixedly arranged on one end side wall of the first bolt column (301), and a first limiting groove (401) for the clearance fit of the first limiting ring (3011) is formed in one end face of the fastening cover (4);
the side wall of the linkage disc (3) is fixedly provided with ring teeth (302), gear discs (2) are meshed below the ring teeth (302), the two gear discs (2) are fixedly connected to the same rotating shaft (201), one end of the rotating shaft (201) is embedded into the output end of the motor (202), and the motor (202) is fixedly connected to the base (1).
2. The ultrasonic detection device for the circumferential weld of the detection section of the steam injection boiler according to claim 1, wherein the outer side of the linkage disc (3) is sleeved with a mounting plate (101), a positioning ring (303) with a T-shaped section is fixedly arranged on the side wall of the linkage disc (3) along the circumferential direction, and a positioning groove (1013) for clearance fit of the positioning ring (303) is formed in the mounting plate (101).
3. The ultrasonic detection device for the circumferential weld of the detection section of the steam injection boiler according to claim 2, wherein two sides of the bottom surface of the mounting plate (101) are fixedly connected with the base (1) through the support plates (1011), and a positioning plate (1012) for rotating and connecting the rotating shaft (201) through a rolling bearing is fixedly connected between the two support plates (1011) below the mounting plate (101).
4. An ultrasonic detection device for a circumferential weld of a detection section of a steam injection boiler according to claim 1, 2 or 3, wherein a rectangular frame (7) is arranged above the ultrasonic detection mechanism (6), a T-shaped block (601) is fixedly arranged on the top surface of the ultrasonic detection mechanism (6), a connecting plate (6011) is fixedly arranged on one side of the top surface of the T-shaped block (601), an electric push rod (6012) is fixedly arranged on one side surface of the connecting plate (6011), and a fixed section of the electric push rod (6012) is fixedly connected to the top surface of the rectangular frame (7).
5. The ultrasonic detection device for the circumferential weld of the detection section of the steam injection boiler according to claim 4, wherein a sliding groove (701) for clearance fit of the T-shaped block (601) is formed in the inner side of the rectangular frame (7), the T-shaped block (601) is in sliding sleeve joint with the guide post (702), and two ends of the guide post (702) are fixedly arranged on the inner wall of the sliding groove (701).
6. The ultrasonic detection device for the circumferential weld of the detection section of the steam injection boiler according to claim 5, wherein a linkage plate (8) is arranged on one side of the rectangular frame (7), a second bolt column (803) is spirally sleeved at the middle part of the linkage plate (8), a second limit ring (8031) is fixedly arranged on one end side wall of the second bolt column (803), and a second limit groove (704) for clearance fit of the second limit ring (8031) is formed in the side wall of the rectangular frame (7);
the side walls of the rectangular frames (7) on two sides of the second limiting groove (704) are fixedly provided with first guide rods (703), and the free ends of the first guide rods (703) are in sliding sleeve connection with the linkage plate (8).
7. The ultrasonic detection device for the circumferential weld of the detection section of the steam injection boiler according to claim 6, wherein a vertical plate (102) is fixedly arranged on the base (1) below the linkage plate (8), connecting lugs (802) are fixedly arranged at two ends of the linkage plate (8), a second guide rod (1022) is sleeved in one connecting lug (802) in a sliding manner, and a third bolt column (801) is sleeved in the other connecting lug (802) in a spiral manner;
the second guide rod (1022) is fixedly connected to the top surface of the vertical plate (102), a third limiting ring (8011) is fixedly arranged on the side wall of the lower end of the third bolt column (801), and a third limiting groove (1023) for clearance fit of the third limiting ring (8011) is formed in the top surface of the vertical plate (102).
8. The ultrasonic detection device for circumferential welds of detection segments of steam-injection boiler according to claim 7, characterized in that a controller (1021) is mounted on one side of the vertical plate (102), and the controller (1021) is electrically connected with the motor (202), the ultrasonic detection mechanism (6) and the electric push rod (6012) respectively through conductive wires.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321484458.XU CN220084766U (en) | 2023-06-12 | 2023-06-12 | Ultrasonic detection device for circumferential weld of detection section of steam injection boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321484458.XU CN220084766U (en) | 2023-06-12 | 2023-06-12 | Ultrasonic detection device for circumferential weld of detection section of steam injection boiler |
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| Publication Number | Publication Date |
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| CN220084766U true CN220084766U (en) | 2023-11-24 |
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| CN202321484458.XU Active CN220084766U (en) | 2023-06-12 | 2023-06-12 | Ultrasonic detection device for circumferential weld of detection section of steam injection boiler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117647582A (en) * | 2023-12-06 | 2024-03-05 | 广州声华科技股份有限公司 | Ultrasonic detection device and method for boiler surface weld joint |
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2023
- 2023-06-12 CN CN202321484458.XU patent/CN220084766U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117647582A (en) * | 2023-12-06 | 2024-03-05 | 广州声华科技股份有限公司 | Ultrasonic detection device and method for boiler surface weld joint |
| CN117647582B (en) * | 2023-12-06 | 2024-05-17 | 广州声华科技股份有限公司 | Ultrasonic detection device and method for boiler surface weld joint |
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