CN204731201U - A kind of small diameter tube inwall checks ultrasonic probe clamp structure - Google Patents
A kind of small diameter tube inwall checks ultrasonic probe clamp structure Download PDFInfo
- Publication number
- CN204731201U CN204731201U CN201420866122.4U CN201420866122U CN204731201U CN 204731201 U CN204731201 U CN 204731201U CN 201420866122 U CN201420866122 U CN 201420866122U CN 204731201 U CN204731201 U CN 204731201U
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- probe
- core pipe
- small diameter
- side plate
- diameter tube
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Abstract
The utility model belongs to one loop of nuclear power station system technical field of nondestructive testing, is specifically related to a kind of small diameter tube inwall and checks ultrasonic probe clamp structure.Comprise stem stem assembly, pop one's head in and tighten up driven unit, probe clamp assemblies; In the middle part of the core pipe of stem stem assembly, cross section is regular hexagon, on it, probe clamp assemblies is overlapped in installation six, core pipe bottom is flange arrangement, core pipe inside is hollow structure, the bottom of hollow structure is provided with signal/water composite-joint, signal/water composite-joint inner hub location installs water pipe plug, is fixed by compressing volution; Core pipe top is provided with plinth and guide housing, and plinth outer wall circumference is furnished with two collar aperture; Probe tightens up driven unit and is enclosed within outside stem stem assembly, comprises tightening ring and three push rods, and push rod inserts in the pilot hole of core pipe lower flange structure, and can in hole upper and lower easy slide, push rod is threadedly attached on tightening ring; Each probe clamp assemblies can clamp two general purpose ultrasound probes.
Description
Technical field
The utility model belongs to one loop of nuclear power station system and other industry technical field of nondestructive testing, is specifically related to a kind of small diameter tube inwall and checks ultrasonic probe clamp structure.
Background technology
Nuclear power station has a lot of container, equipment and end socket to there is the pipeline of inwall perforate, and the weld seam on it, because of reasons such as position, radiation dose and examination scope requirements, can not implement ultrasonic examination from pipeline outer wall butt welded seam; Now, carry out butt welded seam enforcement inspection from inner-walls of duct and just become necessary choosing.
For the inspection of this kind of weld seam, the internal diameter that adopts checks universal probe more, and probe body is the rectangular structure of rule, and there is the pilot hole for clamping side.The inspection completing a weld seam needs to use multiple probe and implements scanning, for increasing work efficiency, reduction personnel, by irradiation dose, improve the degree of confidence and trackability that detect data, and the special for automatic scanner that adopts carries multiple ultrasonic inspection probe to implement inspection more.Now, how realize the reliable retention of multiple probe at narrow and small small diameter tube inwall, ensure all probes in scanning process with the reliable laminating of inner surface of pipeline, guarantee that ultrasonic signal coupling just becomes a crucial technical matters.
Summary of the invention
The purpose of this utility model is to provide a kind of small diameter tube inwall to check ultrasonic probe clamp structure, to overcome the restriction of the inner small space of small diameter tube, realize the reliable retention of multiple universal probe, ensure the good fit of each probe on small diameter tube inwall, meet the ultrasonographic requirement of nuclear power station small diameter tube inwall, this probe clamp structure also can be used for the Non-Destructive Testing that the similar small diameter tube weld seam of other industry is implemented from inwall.
For achieving the above object, technical solution adopted in the utility model is:
A kind of small diameter tube inwall checks ultrasonic probe clamp structure, comprises stem stem assembly, pops one's head in and tighten up driven unit, probe clamp assemblies; Described stem stem assembly comprises guide housing, plinth, signal cable socket, core pipe, signal/water composite-joint, compresses volution, water pipe plug; In the middle part of core pipe, cross section is regular hexagon, on it, probe clamp assemblies is overlapped in installation six, core pipe bottom is flange arrangement, core pipe inside is hollow structure, the bottom of hollow structure is provided with signal/water composite-joint, signal/water composite-joint inner hub location installs water pipe plug, is fixed by compressing volution; Core pipe top is provided with plinth and guide housing, and plinth outer wall circumference is furnished with two collar aperture, for installing signal cable socket; Probe tightens up driven unit and is enclosed within outside stem stem assembly, comprises tightening ring and three push rods, and push rod inserts in the pilot hole of core pipe lower flange structure, and can in hole upper and lower easy slide, push rod is threadedly attached on tightening ring; Each probe clamp assemblies can clamp two general purpose ultrasound probes.
Use concentric cable connection signal/water composite-joint and signal cable socket in described core pipe hollow structure, form the circuit path of ultrasonic signal, after assembling test completes, encapsulating in core pipe hollow structure.
Described probe clamp assemblies comprises firm banking, pole, back-moving spring, adjustment pad, screw are shipped and resell on another market, frame of popping one's head in, conventional ultrasound probe, sliding bottom, side plate, stop screw, ejector spring; Firm banking is the structural matrix of probe clamp assemblies, is installed on core pipe by probe clamp assemblies, and finely tunes the ejection height of probe by the adjustment pad of its underpart by screw; Firm banking, pole, side plate and sliding bottom form four-bar mechanism jointly, when the relative firm banking of sliding bottom slip into the degree of depth diminish time, angle between two poles diminishes, and the distance between side plate and base becomes large, and conventional ultrasound probe outwards moves under the effect of side plate; Ejector spring is connected between sliding bottom and firm banking, and both are drawn move toward one another all the time, guarantees that conventional ultrasound probe outwards moves; Probe frame relies on the hole on its centre to coordinate with shipping and reselling on another market on side plate and is suspended between two panels side plate, can freely swings around shipping and reselling on another market on side plate, and is inserted in its lateral aperture the angle limiting it and swing by stop screw; Screw is shipped and resell on another market and is threaded connection on probe frame, the straight pin section of its end is inserted in the clamping hole of conventional ultrasound probe, realize probe clamping, the straight pin section can shipped and resell on another market around screw of popping one's head in freely swings, and relies on the gap width between probe frame and probe to limit the hunting range of popping one's head in; Gimbal structure is constituted between probe and side plate; When side plate outwards moves, if side plate one end probe is fitted with small diameter tube inwall, then the probe of the side plate other end can continue outside motion under the effect of four-bar mechanism, until the probe of the other end is fitted with small diameter tube inwall too; The upper end of sliding bottom and firm banking is provided with back-moving spring, and back-moving spring is pressed on the cross bar of pole all the time, ensures pole and is in maximum angle all the time between sliding bottom and firm banking; The signal cable of conventional ultrasound probe is drawn behind from it, is inserted on the signal cable socket of plinth outer wall after installing plug.
The sliding bottom end of described probe clamp assemblies is provided with tightens up screw, tighten up screw be connected to probe tighten up on the tightening ring of driven unit, before enforcement checks, this structure moves down, the push rod driving probe to tighten up driven unit moves, promote tightening ring moves, drive on the sliding bottom of probe clamp assemblies and move, drive probe inwardly motion; When checking enforcement, this structure moves up, and disengages with push rod, and each probe clamp assemblies makes to pop one's head in outwards to move to compress and fits to small diameter tube inwall under the traction of ejector spring.
The described screw that tightens up regulates gap between sliding bottom and tightening ring to compensate the difference of each probe clamp assemblies amount of holding out against.
The amount that the described depth adjustable joint probe tightening up screw screw-in sliding bottom end inwardly tightens up.
Beneficial effect acquired by the utility model is:
The utility model overcomes the restriction of the inner small space of small diameter tube, achieves the reliable retention of nearly 12 universal probes, ensure that the good fit of each probe on small diameter tube inwall, meet the ultrasonographic requirement of nuclear power station small diameter tube inwall.In the utility model, each probe monomer all adopts gimbal structure to be suspended on side plate, ensure that the laminating effect of probe monomer and inwall; Clamped by each probe clamp assemblies two probes adopt spring four-bar linkage structures to hold out against, and make two probes can the change in size of self-adaptation caliber inwall, overlay all the time at inwall, ensure that the coupling effect of probe; Compact design of the present utility model makes the quantity once clamping probe maximize, and greatly improves the efficiency of detection; It is inner that circuit of the present utility model, water route are all encapsulated in core pipe, and encapsulating is protected, and improves reliability and the serviceable life of probe assembly; Modular Interface design makes to be connected facility with testing fixture, reliably; According to the size of internal diameter of the pipeline, probe size, the probe clamping component count that this structure can be carried also can correspondingly change.
Accompanying drawing explanation
Fig. 1 is that small diameter tube inwall described in the utility model checks ultrasonic probe clamp structure front view;
Fig. 2 is that small diameter tube inwall described in the utility model checks ultrasonic probe clamp structure A-A cut-open view;
Fig. 3 is that small diameter tube inwall described in the utility model checks ultrasonic probe clamp structure F-F cut-open view;
Fig. 4 is that stem stem assembly and probe tighten up driven unit front view;
Fig. 5 is that stem stem assembly and probe tighten up driven unit B-B cut-open view;
Fig. 6 is probe clamp assemblies front view;
Fig. 7 is probe clamping assembly plan view;
Fig. 8 is probe clamp assemblies D-D cut-open view;
Fig. 9 is probe clamp assemblies C-C cut-open view;
In figure: 1, stem stem assembly; 2, probe tightens up driven unit; 3, probe clamp assemblies; 4, guide housing; 5, plinth; 6, signal cable socket; 7, core pipe; 8, tightening ring; 9, push rod; 10, signal/water composite-joint; 11, volution is compressed; 12, water pipe plug; 13, firm banking; 14, pole; 15, back-moving spring; 16, pad is adjusted; 17, screw is shipped and resell on another market; 18, probe frame; 19, conventional ultrasound probe; 20, screw is tightened up; 21, sliding bottom; 22, side plate; 23, stop screw; 24, ejector spring.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
As shown in Fig. 1-3, small diameter tube inwall described in the utility model checks that ultrasonic probe clamp structure comprises stem stem assembly 1, probe tightens up driven unit 2, probe clamp assemblies 3;
As shown in Figure 4, Figure 5, stem stem assembly 1 is the support and connection main body of this structure, and inside is the passage in ultrasonic signal circuit, couplant supply water route, outside for installing probe clamp assemblies 3.Stem stem assembly 1 comprises guide housing 4, plinth 5, signal cable socket 6, core pipe 7, signal/water composite-joint 10, compresses volution 11, water pipe plug 12.Core pipe 7 is as the support body of total, and in the middle part of it, cross section is regular hexagon, and each is distributed with screw, for installing six cover probe clamp assemblies 3; Bottom is flange arrangement, for being connected with automatic detection device.Core pipe 7 is hollow structure, inside is the passage in ultrasonic signal circuit, couplant supply water route, and the bottom of hollow structure is provided with signal/water composite-joint 10, and signal/water composite-joint 10 inner hub location installs water pipe plug 12, connect for water route, use compression volution 11 to be fixed.Core pipe 7 top is provided with plinth 5 and guide housing 4, and plinth 5 outer wall circumference is furnished with two collar aperture, and for installing signal cable socket 6, the side in each hole all etches the definition of the marks such as letter or number for distinguishing each socket.Concentric cable connection signal/water composite-joint 10 and signal cable socket 6 is used in core pipe 7 hollow structure; form the circuit path of ultrasonic signal; after assembling test completes, in core pipe 7 hollow structure, encapsulating is fixed, is protected cable, joint and water pipe, and makes it into as a whole.
Probe tightens up driven unit 2 and comprises tightening ring 8 and three push rods 9, and it is enclosed within outside stem stem assembly 1, and push rod 9 inserts in the pilot hole of core pipe 7 lower flange structure of stem stem assembly 1, and can in hole upper and lower easy slide.Push rod 9 is threadedly attached on tightening ring 8, and is tightened to an entirety.
As shown in Fig. 6-Fig. 9, probe clamp assemblies 3 uses screw to be installed on six faces of core pipe 7, and each probe clamp assemblies 3 can clamp two general purpose ultrasound probes.
Probe clamp assemblies 3 comprises firm banking 13, pole 14, back-moving spring 15, adjustment pad 16, screw are shipped and resell on another market 17, probe frame 18, conventional ultrasound probe 19, tighten up screw 20, sliding bottom 21, side plate 22, stop screw 23, ejector spring 24.Firm banking 13 is the structural matrix of probe clamp assemblies 3, is installed on core pipe 7 by probe clamp assemblies 3, and finely tunes the ejection height of probe by the adjustment pad 16 of its underpart by screw.Firm banking 13, pole 14, side plate 22 and sliding bottom 21 form four-bar mechanism jointly, when sliding bottom 21 relatively firm banking 13 slip into the degree of depth diminish time, angle between two poles 14 diminishes, distance between side plate 22 and base 13 becomes large, conventional ultrasound probe 19 outwards moves under the effect of side plate 22, completes the action of probe laminating small diameter tube inwall.Ejector spring 24 is connected between sliding bottom 21 and firm banking 13, and both are drawn move toward one another all the time, guarantees that conventional ultrasound probe 19 outwards moves, and guarantees that itself and inwall are fitted well.
Probe frame 18 relies on the hole on its centre to coordinate with shipping and reselling on another market on side plate 22 and is suspended between two panels side plate 22, can freely swings around shipping and reselling on another market on side plate 22, and is inserted in its lateral aperture the angle limiting it and swing by stop screw 23; Screw ship and resell on another market 17 be threaded connection probe frame 18 on, the straight pin section of its end is inserted in the clamping hole of conventional ultrasound probe 19, realize clamping probe 19, probe can around screw ship and resell on another market 17 straight pin section freely swing, rely on probe frame 18 and probe 19 between gap width limit the hunting range of popping one's head in.So, pop one's head between 19 and side plate 22 and just constitute a gimbal structure.
When side plate 22 outwards moves, if side plate 22 one end probe is fitted with small diameter tube inwall, then the probe of side plate 22 other end can continue outside motion under the effect of four-bar mechanism, until the probe of the other end is fitted with small diameter tube inwall too.
The appropriate location, upper end of sliding bottom 21 and firm banking 13 is provided with back-moving spring 15, back-moving spring 15 is pressed on the cross bar of pole 14 all the time, ensure pole 14 and be in maximum angle all the time between sliding bottom 21 and firm banking 13, when this structure erects, the four-bar mechanism clamping probe is made can not saggingly to cause this structure to be difficult to enter small diameter tube inside too much.
The signal cable of conventional ultrasound probe 19 is drawn behind from it, is inserted on the signal cable socket 6 of plinth 5 outer wall after installing plug.
Sliding bottom 21 end of probe clamp assemblies 3 is provided with one and tightens up screw 20, tighten up screw 20 be connected to probe tighten up on the tightening ring 8 of driven unit 2, before automatic detection device carries probe enforcement inspection, this structure moves down by automatic detection device, the push rod 9 driving probe to tighten up driven unit 2 moves, promote tightening ring 8 moves, drive on the sliding bottom 21 of probe clamp assemblies 3 and move, drive probe inwardly motion, probe circumscribed enveloping diameter clamped by this structure is diminished, realizes that probe assembly is expedite to be entered in small diameter tube endoporus.When checking enforcement, automatic detection device drives this structure to move up, and disengages with push rod 9, and each probe clamp assemblies 3 makes outside mobile compression of probe 19 fit to small diameter tube inwall under the traction of ejector spring 24.By tightening up the gap between sliding bottom 21 and tightening ring 8 that screw 20 regulates to compensate the difference of each probe clamp assemblies 3 amount of holding out against.Regulate and tighten up depth adjustable joint that screw 20 screws in sliding bottom 21 end and to pop one's head in the amount of inwardly tightening up.
The small diameter tube inwall of clamping ultrasonic probe is checked that ultrasonic probe clamp structure is connected on automatic detection device, automatic detection device drives this structure to move down, detection probe is inwardly tightened up, probe circumscribed enveloping diameter clamped by this structure is diminished, until be less than the internal diameter by inspection pipeline, automatic detection device is arrived together with this structure installment and checks position, start automatic detection device and drive coupling probe motion, complete the ultrasonic self-verifying of small diameter tube inwall.After inspection, automatic detection device drives this structure to move down, and detection probe is inwardly tightened up, probe circumscribed enveloping diameter clamped by this structure is diminished, until be less than the internal diameter by inspection pipeline, automatic detection device withdrawn from small diameter tube endoporus together with this structure, completes inspection.
Claims (6)
1. small diameter tube inwall checks a ultrasonic probe clamp structure, it is characterized in that: comprise stem stem assembly (1), probe tightens up driven unit (2), probe clamp assemblies (3); Described stem stem assembly (1) comprises guide housing (4), plinth (5), signal cable socket (6), core pipe (7), signal/water composite-joint (10), compresses volution (11), water pipe plug (12); Cross section, core pipe (7) middle part is regular hexagon, on it, probe clamp assemblies (3) is overlapped in installation six, core pipe (7) bottom is flange arrangement, core pipe (7) inside is hollow structure, the bottom of hollow structure is provided with signal/water composite-joint (10), signal/water composite-joint (10) inner hub location installs water pipe plug (12), is fixed by compressing volution (11); Core pipe (7) top is provided with plinth (5) and guide housing (4), and plinth (5) outer wall circumference is furnished with two collar aperture, for installing signal cable socket (6); Probe tightens up driven unit (2) and is enclosed within stem stem assembly (1) outward, comprise tightening ring (8) and three push rods (9), push rod (9) inserts in the pilot hole of core pipe (7) lower flange structure, and can in hole upper and lower easy slide, push rod (9) is threadedly attached on tightening ring (8); Each probe clamp assemblies (3) can clamp two general purpose ultrasound probes.
2. small diameter tube inwall according to claim 1 checks ultrasonic probe clamp structure, it is characterized in that: by concentric cable connection signal/water composite-joint (10) and signal cable socket (6) in described core pipe (7) hollow structure, form the circuit path of ultrasonic signal, after assembling test completes, encapsulating in core pipe (7) hollow structure.
3. small diameter tube inwall according to claim 1 checks ultrasonic probe clamp structure, it is characterized in that: described probe clamp assemblies (3) comprises firm banking (13), pole (14), back-moving spring (15), adjustment pad (16), screw are shipped and resell on another market (17), frame (18) of popping one's head in, conventional ultrasound probe (19), sliding bottom (21), side plate (22), stop screw (23), ejector spring (24); Firm banking (13) is the structural matrix of probe clamp assemblies (3), be installed on core pipe (7) by screw clamp assemblies (3) of popping one's head in, and finely tune the ejection height of probe by the adjustment pad (16) of its underpart; Firm banking (13), pole (14), side plate (22) and sliding bottom (21) form four-bar mechanism jointly, when sliding bottom (21) relatively firm banking (13) slip into the degree of depth diminish time, angle between two poles (14) diminishes, distance between side plate (22) and base (13) becomes greatly, and conventional ultrasound probe (19) outwards moves under the effect of side plate (22); Ejector spring (24) is connected between sliding bottom (21) and firm banking (13), and both are drawn move toward one another all the time, guarantees that conventional ultrasound probe (19) outwards moves; Probe frame (18) relies on the hole on its centre to coordinate with shipping and reselling on another market on side plate (22) to be suspended between two panels side plate (22), can freely swing around shipping and reselling on another market on side plate (22), and be inserted in its lateral aperture the angle limiting it and swing by stop screw (23); Screw is shipped and resell on another market (17) is threaded connection on probe frame (18), the straight pin section of its end is inserted in the clamping hole of conventional ultrasound probe (19), realize probe (19) clamping, can ship and resell on another market around the screw straight pin section of (17) of probe freely swings, and relies on probe frame (18) to limit the hunting range of popping one's head in the gap width of popping one's head between (19); Gimbal structure is constituted between probe (19) and side plate (22); When side plate (22) outwards moves, if side plate (22) one end probe is fitted with small diameter tube inwall, then the probe of side plate (22) other end can continue outside motion under the effect of four-bar mechanism, until the probe of the other end is fitted with small diameter tube inwall too; The upper end of sliding bottom (21) and firm banking (13) is provided with back-moving spring (15), back-moving spring (15) is pressed on the cross bar of pole (14) all the time, ensures pole (14) and is in maximum angle all the time between sliding bottom (21) and firm banking (13); The signal cable of conventional ultrasound probe (19) is drawn behind from it, is inserted on the signal cable socket (6) of plinth (5) outer wall after installing plug.
4. small diameter tube inwall according to claim 3 checks ultrasonic probe clamp structure, it is characterized in that: sliding bottom (21) end of described probe clamp assemblies (3) is provided with tightens up screw (20), tighten up screw (20) to be connected to probe and to tighten up on the tightening ring (8) of driven unit (2), before enforcement checks, this structure moves down, the push rod (9) driving probe to tighten up driven unit (2) moves, promote tightening ring (8) moves, drive on the sliding bottom (21) of probe clamp assemblies (3) and move, drive probe inwardly motion, when checking enforcement, this structure moves up, disengage with push rod (9), each probe clamp assemblies (3) makes probe (19) outwards move and compresses laminating to small diameter tube inwall under the traction of ejector spring (24).
5. small diameter tube inwall according to claim 4 checks ultrasonic probe clamp structure, it is characterized in that: the described screw (20) that tightens up regulates gap between sliding bottom (21) and tightening ring (8) to compensate the difference of each probe clamp assemblies (3) amount of holding out against.
6. small diameter tube inwall according to claim 4 checks ultrasonic probe clamp structure, it is characterized in that: the amount that the described depth adjustable joint probe tightening up screw (20) screw-in sliding bottom (21) end inwardly tightens up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420866122.4U CN204731201U (en) | 2014-12-30 | 2014-12-30 | A kind of small diameter tube inwall checks ultrasonic probe clamp structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420866122.4U CN204731201U (en) | 2014-12-30 | 2014-12-30 | A kind of small diameter tube inwall checks ultrasonic probe clamp structure |
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| Publication Number | Publication Date |
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| CN204731201U true CN204731201U (en) | 2015-10-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420866122.4U Withdrawn - After Issue CN204731201U (en) | 2014-12-30 | 2014-12-30 | A kind of small diameter tube inwall checks ultrasonic probe clamp structure |
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| CN (1) | CN204731201U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105806955A (en) * | 2014-12-30 | 2016-07-27 | 中核武汉核电运行技术股份有限公司 | Small-diameter pipe inner wall inspection ultrasonic probe clamping structure |
| CN106093198A (en) * | 2015-10-09 | 2016-11-09 | 中国石油天然气第建设有限公司 | High-stability supersonic phased array pipeline girth weld detection device |
| CN106442732A (en) * | 2016-10-28 | 2017-02-22 | 北京安泰中科金属材料有限公司 | Ultrasonic detection device and method for multi-layered composite interface of metal pipe fitting |
| CN107411772A (en) * | 2017-05-25 | 2017-12-01 | 苏州乐步生物科技有限公司 | A kind of doppler transducer positioning fixture |
| CN109001299A (en) * | 2018-09-10 | 2018-12-14 | 长江大学 | A kind of continuous pipe crack online detection instrument |
-
2014
- 2014-12-30 CN CN201420866122.4U patent/CN204731201U/en not_active Withdrawn - After Issue
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105806955A (en) * | 2014-12-30 | 2016-07-27 | 中核武汉核电运行技术股份有限公司 | Small-diameter pipe inner wall inspection ultrasonic probe clamping structure |
| CN105806955B (en) * | 2014-12-30 | 2018-09-28 | 中核武汉核电运行技术股份有限公司 | A kind of path inside pipe wall inspection ultrasonic probe clamp structure |
| CN106093198A (en) * | 2015-10-09 | 2016-11-09 | 中国石油天然气第建设有限公司 | High-stability supersonic phased array pipeline girth weld detection device |
| CN106093198B (en) * | 2015-10-09 | 2018-07-31 | 中国石油天然气第一建设有限公司 | High-stability supersonic phased array pipeline girth weld detection device |
| CN106442732A (en) * | 2016-10-28 | 2017-02-22 | 北京安泰中科金属材料有限公司 | Ultrasonic detection device and method for multi-layered composite interface of metal pipe fitting |
| CN106442732B (en) * | 2016-10-28 | 2019-03-15 | 北京安泰中科金属材料有限公司 | The supersonic detection device and supersonic detection method at metal tube MULTILAYER COMPOSITE interface |
| CN107411772A (en) * | 2017-05-25 | 2017-12-01 | 苏州乐步生物科技有限公司 | A kind of doppler transducer positioning fixture |
| CN109001299A (en) * | 2018-09-10 | 2018-12-14 | 长江大学 | A kind of continuous pipe crack online detection instrument |
| CN109001299B (en) * | 2018-09-10 | 2020-08-18 | 长江大学 | Online crack detection equipment for continuous pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151028 Effective date of abandoning: 20180928 |