CN204902794U - Detect in pipeline under pressure with spherical formula probe ultrasonic thickness measurement device that gathers - Google Patents
Detect in pipeline under pressure with spherical formula probe ultrasonic thickness measurement device that gathers Download PDFInfo
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- CN204902794U CN204902794U CN201520654497.9U CN201520654497U CN204902794U CN 204902794 U CN204902794 U CN 204902794U CN 201520654497 U CN201520654497 U CN 201520654497U CN 204902794 U CN204902794 U CN 204902794U
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Abstract
The utility model relates to a detect in pipeline under pressure with spherical formula probe ultrasonic thickness measurement device that gathers. The purpose is that the device that provides can satisfy the especially thickness measuring requirement of elbow department of great diameter pipeline to have in the motion process stability good, detect characteristics such as precision height, detection efficiency height. Technical scheme is: a detect in pipeline under pressure with spherical formula probe ultrasonic thickness measurement device that gathers which characterized in that: including spherical shell, spherical dustcoat, a plurality of ultrasonic transducer and signal processing device, a plurality of ultrasonic transducer equipartitions are on the spherical shell to be connected through wire and the inside signal processing device of spherical shell, spherical dustcoat package attaches the outer wall at the spherical shell to the system opened has a plurality of through -holes that correspond with the ultrasonic transducer position.
Description
Technical field
The utility model relates to pressure pipeline inner detection technique field, the spherical densely covered formula Probe Ultrasonic Searching measuring thickness device especially detected in pressure pipeline.
Background technology
Pipeline, as one of five large means of transportation, is the Main Means of the critical energy such as transfer oil, rock gas medium, plays vital effect to the development and stabilization of national economy, is national economy " lifeline ".Along with " enforcement of Important Project and the high speed development of urbanization such as West-east Gas, " gas east, river is sent ", pipeline transportation, with its high-level efficiency, low cost and safe and reliable advantage, more and more demonstrates powerful development potentiality.Corrosion is the defect the most easily produced in metallic conduit use procedure, and pressure pipeline in use, along with the prolongation of time, under the burn into of soil or medium such as to wash away at the various factors, there will be the phenomenons such as etch pit, wall thickness be thinning.Corrosion not only makes pipeline bearing cross-section reduce, also can break time serious causes medium to be revealed, and the medium of pressure pipeline conveying is have explosion hazard, toxicity or have destructiveness to environment a bit, office worker's injures and deaths, property loss, environmental pollution and huge economic loss will be caused once leak, sometimes also can affect the life of the people.According to statistics, the accident that China causes because of corrosive pipeline every year accounts for 30% ~ 40% of total number of accident, and the economic loss caused accounts for about 4% of gross national product (GNP).Most of long distance pipeline of China has employed more than 20 year, and the perforation seepage accident that pipeline causes because of corrosion failure happens occasionally, and starts to enter the Frequent Accidents stage in later stage.But a lot of pipeline is buried-pipe laying, and a lot of pipeline is in-duct installation, detect corrosion difficulty from pipeline external.Therefore how in pipeline, to carry out Corrosion monitoring, the key of periodic inspection carried out by the pressure pipeline that the amount of being multiaspect is wide.External research in pipeline detection is carried out comparatively early, and through the continuous research of decades, the pipe detector that some countries develop, all reaches higher level in accuracy of detection, positioning precision, data processing etc., and practical requirement.At present, Tuboscope company of the U.S., Southwest Research Inst., German Pipetron company, PII company of Britain, Japanese NKK company has developed various intelligent detector, and wherein ultrasonic method and leakage method obtain and apply more widely.Its ultimate principle of magnetic-leakage type Inner Examination Technology on Pipeline utilizes permanent magnet Magnetizing pipeline inwall, and will there be magnetic field exposure at corrosive pipeline place, and sensor detects magnetic leakage signal, and carries out process to signal and obtain corrosive pipeline situation.But Magnetic Flux Leakage Inspecting also exists the restriction (wall thickness can not be too thick) to tested pipeline, poor anti jamming capability and the shortcoming such as spatial resolution is low, and be only applicable to the detection on the nearly surface of material and surface.Ultrasound wave pipeline detection mainly utilizes ultrasonic inspection principle, launches ultrasound wave by pumped (conveying) medium from pipeline to duct wall, according to time, the size of echo, detects the distance, pipeline residual wall thickness, pipeline corrosion default situation etc. of probe and inner-walls of duct.It is high that supercritical ultrasonics technology has accuracy of detection, can obtain quantitative testing result, can directly differentiate inside and outside corrosion; Different pipe materials on testing result substantially without impact.Comprehensive analysis, leakage method and ultrasonic method respectively have relative merits, but for pipe-line for conveying liquids, ultrasonic detection technology will have broad application prospects.
Detect the corrosion condition adopting ultrasonic thickness test technology to judge pipeline in pipe ultrasonic, utilize Ultrasonic Pulse-Echo principle, therefore in testing process, acoustic beam will perpendicular to inwall, and slightly deflection just possibly cannot obtain the ultrasonic signal of sufficient intensity.But, ultrasonic thickness measurement device in motion process due to factors such as vibrating, turn to be difficult to ensure acoustic beam all the time perpendicular to inwall, particularly ultrasonic thickness measurement device is more difficult to ensure that through channel bend position card acoustic beam is vertical or be basically perpendicular to inwall, and outside elbow often medium wash away and cause wall thickness reduction position, it is the keypoint part that corrosive pipeline detects, therefore existing ultrasonic inner detection technique is difficult to the Corrosion monitoring realizing elbow, and this problem waits to solve.
Utility model content
The purpose of this utility model is to overcome deficiency of the prior art, a kind of device realizing pressure pipeline internal ultrasonic thickness measuring is provided, this device can meet the thickness measuring requirement of larger diameter pipeline especially elbow, and to have in motion process that good stability, accuracy of detection are high, detection efficiency high.
The utility model have employed following technical scheme:
Detect with spherical densely covered formula Probe Ultrasonic Searching measuring thickness device in a kind of pressure pipeline, it is characterized in that: comprise spherical shell, spherical outer cover, some ultrasonic probes and signal processing apparatus; Described some ultrasonic probes are distributed on spherical shell, and are connected by the signal processing apparatus of wire with spherical shell inside; Described spherical outer cover bag is attached to the outer wall of spherical shell, and opens and be shaped with some through holes corresponding with ultrasonic probe position.
As preferably, described signal processing apparatus comprises built-in PC platform and connected channel ultrasonic card, USB flash disk reservoir, high-effect battery, and channel ultrasonic card is connected with described some ultrasonic probes.
As preferably, described spherical shell offers the tapped through hole corresponding with USB flash disk reservoir position, and this tapped through hole realizes sealing by thread plug and O-ring seal, spherical outer cover offers the through hole being beneficial to thread plug and passing through.
As preferably, described signal processing apparatus also comprises accelerometer and magnetometer, and this accelerometer is connected with described built-in PC platform with magnetometer.
As preferably, described some ultrasonic probes all along the radially layout of spherical shell, outer wall indentation one segment distance of the relatively spherical outer cover in outer end of each ultrasonic probe.
As preferably, described some ultrasonic probes all adopt Circular wafer, and the arranged outside of Circular wafer has the concavees lens focused on for sound wave.
As preferably, described spherical shell to be docked by screw thread by two hemispherical Shells and forms, and joint is sealed by O-ring seal.
As preferably, described hemispherical Shell adopts metal to make.
As preferably, the external diameter of described spherical outer cover is greater than the internal diameter of pipe under test, thus forms interference fit with pipe under test.
As preferably, described spherical outer cover is formed by connecting by cementing agent by two semisphere leather cups, and each semisphere leather cup adopts highly elastic material to make.
Compared with prior art, the beneficial effects of the utility model are:
1, because whole ultrasonic thickness measurement device is spherical in shape, spherical shell evenly gathers ultrasonic probe, therefore can not overturn in operational process, and along pipe circumference direction, always there is one group of acoustic beam of popping one's head in vertical or be basically perpendicular to inwall, probe is enable to receive ultrasonic signal, thus detector tube wall erosion situation.Particularly outside bend pipe, the most easily suffer erosion position, the ultrasound wave radially launched points to the concave surface of bend pipe, and the probe quantity allowing to receive ultrasonic signal increases, and more easily differentiates the corrosion condition outside bend pipe.
2, whole ultrasonic thickness measurement device volume is little, the spherical outer cover of outside parcel, spherical outer cover diameter is a bit larger tham internal diameter of the pipeline, and a cross section therefore can be had in operational process to form interference fit with pipeline, make spherical outer cover on the driving of liquid in pipe pressure reduction under move forward.
3, whole ultrasonic thickness measurement apparatus structure is compact, and in spherical metal shell, installation channel ultrasonic card, acceleration take into account magnetometer, high-effect battery etc.; And the functions such as ultrasonic thickness test, ultrasonic signal processing and storage, device motion mileage record, corrosion default location can be completed.
4, ultrasonic thickness measuring probe adopts sound lens focusing mode, make it to focus at ad-hoc location by curvature design, overcome the impact of water/steel interface acoustical energy losses to greatest extent, in addition, the ultrasound wave each probe being sent by the perforate of spherical outer cover does not interfere with each other mutually, and ultrasonic thickness measurement reliability is improved.
Accompanying drawing explanation
Fig. 1-1 is the sectional structure schematic diagram of utility model works state.
Fig. 1-2 is the plan structure schematic diagram of Fig. 1-1.
Fig. 2 is the mounting structure schematic diagram of spherical shell and ultrasonic probe.
Fig. 3 is the structural representation of spherical shell.
Fig. 4 is the structural representation of spherical outer cover.
Fig. 5 be probe with spherical shell, spherical outer cover assembling schematic diagram.
Fig. 6 is ultrasonic probe sound lens focusing schematic diagram.
Fig. 7 is the fundamental diagram of ultrasound examination corrosion.
Fig. 8 is the fundamental diagram of ultrasound examination and signal transacting.
Embodiment
Below in conjunction with Figure of description, the utility model is described in further detail, but the utility model is not limited to following examples.
As shown in Fig. 1-1 to Fig. 5, detect in the pressure pipeline that the utility model provides with spherical densely covered formula Probe Ultrasonic Searching measuring thickness device, comprise spherical shell 1, several ultrasonic probes 2, channel ultrasonic card 3, spherical outer cover 4, accelerometer 5 and magnetometer 6, high-effect battery 7, built-in PC platform 8, USB flash disk reservoir 9, thread plug 10 etc., to realize carrying out wall thickness mensuration to pressure pipeline 11.
Described some ultrasonic probes are distributed on spherical shell, and are connected by the signal processing apparatus of wire with spherical shell inside; Described spherical outer cover bag is attached to the outer wall of spherical shell, and opens and be shaped with some through holes corresponding with ultrasonic probe position.Described some ultrasonic probes all along the radially layout of spherical shell, outer wall indentation one segment distance of the relatively spherical outer cover in outer end of each ultrasonic probe.
Below for DN150 pipeline thickness measuring, the embodiment (following unit is mm) of spherical densely covered formula Probe Ultrasonic Searching measuring thickness device is described.
1 Φ 138 × 6 spherical shell is made with metal (such as steel), spherical shell is combined by 2 hemispherical Shells 1-1,1-2, Φ 138 × 6 spherical shell has altogether 120 Φ 8 apertures, 120 Φ 8 apertures are at Φ 138 spherical uniform distribution, namely [0, π] the elevation angle between uniform 10 layers layout, be uniformly distributed 1,7,14,18,20,20,18,14,7 and 1 probe successively, wherein respectively distribute 1 at the bottom of ball top and ball and pop one's head in.These Φ 8 apertures are connected with ultrasonic probe by screw thread.
Internal and external threads is processed respectively at 2 hemispherical Shell edges, docking and the sealing of spherical shell is realized by screw thread 15 and O-ring seal 12, wherein 1 hemispherical Shell has M12 tapped through hole 14, sealing is realized with M12 thread plug 10 and O-ring seal 13, the position of the corresponding USB flash disk reservoir 9 of M12 tapped through hole, do not need at the end of detection to open whole Φ 138 × 6 spherical shell, only need open M12 thread plug, take out USB flash disk reservoir 9 and carry out data analysis.
Wrap up the spherical outer cover of Φ 156 × 9 outside Φ 138 × 6 spherical shell, spherical outer cover adopts highly elastic material to make (such as rubber).Spherical outer cover overlaps 4-1 on Φ 138 × 6 spherical shell by 2 semisphere leather cups, the spherical outer cover of Φ 156 × 9 has 120 Φ 8 aperture 4-3 equally, match with Φ 8 aperture of Φ 138 spherical uniform distribution, the spherical outer cover of Φ 156 × 9 is bonding by bonding agent 4-2 and Φ 138 × 6 spherical shell, the position in hole is one to one made to produce skew, two Φ 156 × 9 semisphere leather cups dock bonding equally by bonding agent, the spherical outer spherical shell M12 threaded hole correspondence position that covers on has through hole 4-4 too and is convenient to take out USB flash disk reservoir.
Spherical outer cover diameter is a bit larger tham internal diameter of the pipeline, makes spherical outer cover and pipeline form interference fit, moves forward under the driving of liquid in pipe pressure reduction.Because spherical outer cover shape is spherical, a cross section therefore can be had in operational process to form interference fit with pipeline.When detecting, whole pressure pipeline fills liquid, and spherical densely covered formula Probe Ultrasonic Searching measuring thickness device front end liquid is normal pressure, and rear end liquid applies certain pressure, and under certain differential pressure action, spherical densely covered formula Probe Ultrasonic Searching measuring thickness device overcomes frictional resistance and travels forward.As detected gaseous tension pipeline, then need carry out the opportunity utilizing hydraulic test of pipeline, pressure pipeline, before pressure pipeline pressure test, as pressure pipeline does not carry out pressure test, also will be filled water during detection by opportunity of detecting.
Whole device adopts the ultrasonic probe of One's name is legion (120), and the diameter specifications of ultrasonic probe is Φ 8.Ultrasonic probe is connected with Φ 138 × 6 spherical shell by screw thread, evenly gather in spherical shell dignity, probe adopts Circular wafer, wafer is directional spreding globally, focus on and adopt sound lens mode, the concavees lens adopting the sound lens material larger than underwater sound speed to make, make it to focus at ad-hoc location by curvature design.As shown in Figure 6, concave surface sound lens radius-of-curvature is R for the assembling of single probe and focusing principle figure, and the lens velocity of sound is c
3, in water, the velocity of sound is c
2, then water mid-focal length F is:
When with ultrasonic probe detection steel workpiece, each once focussing force in water and in steel, when ultrasound wave produces the incident ultrasound wave of focusing by concavees lens in water, incident ultrasound wave is assembled further through water/steel interface, form the focused beam in steel, as shown in Figure 6.Being located at the focal length of probe in water when not having steel is F, if probe is H to the distance in water/steel, in steel, the velocity of sound is c
1, then the focal length F ' after the secondary focusing in steel is:
The principle of work of ultrasound examination corrosion as shown in Figure 7, the pulse of probe excitation ultrasound arrives tube wall from water transmission, the pulse echo of pressure pipeline inside and outside wall to be popped one's head in reception through water, ultrasound wave T1 radially incides pressure pipeline inwall by aqueous medium, now there is water/steel heterogeneous interface, a strong reflection wave and R1 can be produced, this reflection wave is probe reception, form water/steel heterogeneous interface reflection echo B1, all the other transmission potentials form transmitted wave T2 and continue to move ahead, arrive pressure pipeline outer wall, a reflection wave and R2 can be produced equally, this reflection wave is transmitted through in water through steel/water termination again, for probe receives, form B2 outer limiting sides echo, because in steel, the velocity of sound is fixed, the wall thickness of pressure pipeline reduces, and the distance between B1 and B2 echo also reduces thereupon, thus reaches the object of wall thickness mensuration.As adopted conventional ultrasound probes, due to the circular configuration of pipeline, reflected energy may not be concentrated, in divergent shape.This will cause weakening of echo, does not reach the sensitivity requirement of transducer, and adopt sound lens focusing of the present utility model time serious, by the curvature of well-designed sound lens, makes actual accumulation in steel near outer wall of steel pipe, can effectively overcome an above-mentioned difficult problem.
But when carrying out ultrasonic thickness test in pipeline, require that acoustic beam is vertical with inner-walls of duct, this requires very high to the directive property of ultrasonic probe in motion, when inner-walls of duct and acoustic beam central line not perpendicular time, hyperacoustic directive property that its reflection echo is launched by probe affects, during sound wave vertical pipe inside surface, flaw echo is the highest, and when inner surface of pipeline normal direction and acoustic beam central line have angle, magnitude of ultrasonic reflection reduces with the increase of this angle.Because the utility model adopts spherical ultrasonic thickness measurement device, sphere evenly gathers ultrasonic thickness measuring probe, therefore in spherical ultrasonic thickness measurement device rolling process, along pipe circumference direction, always there is one group of acoustic beam of popping one's head in vertical or be basically perpendicular to inwall, probe is enable to receive ultrasonic signal, thus detector tube wall erosion situation.Particularly outside bend pipe, the most easily suffer erosion position, the ultrasound wave radially launched points to the concave surface of bend pipe, and the probe quantity allowing to receive ultrasonic signal increases, and more easily differentiates the corrosion condition outside bend pipe.
The utility model adopts the ultrasonic probe of One's name is legion to carry out thickness measuring, what really can collect ultrasonic thickness measurement signal is that acoustic beam is vertical or be basically perpendicular to circumferential one group of ultrasonic probe of inwall, and other ultrasonic probes can not get ultrasonic thickness measurement signal.Because spherical ultrasonic thickness measurement device can roll in operational process, therefore, it is possible to the one group of ultrasonic probe obtaining ultrasonic thickness measurement signal is not fixing.One group of ultrasonic probe that can receive ultrasonic thickness measurement signal is on pipe circumference direction substantially, after ultrasonic signal sends from probe, Φ 8 aperture through spherical outer cover arrives inner-walls of duct again, as shown in Figure 7, therefore Φ 8 aperture of spherical outer cover effectively can be isolated the ultrasound wave that other ultrasonic probes occur and arrived probe, thus the mutual interference between the ultrasonic probe avoiding One's name is legion.
Each ultrasonic probe is connected to channel ultrasonic card by cable, due to internal detector limited space, so require that ultrasonic jig has the feature such as high integration, low-power consumption, super large memory capacity, fast signal process, fast detection, all thickness measuring correlation functions such as hyperacoustic emission control, reception control, high-speed a/d collection, digital processing all can be completed separately by ultrasonic card, and the fundamental diagram of ultrasound examination, signal transacting is shown in Fig. 8.Adopt the ultrasound wave transmitting and receiving of ultrasonic card control 120 ultrasonic probes of 120 passages, ultrasonic card adopts parallel detection, decentralized signal process, decentralized data storage, can improve Multi-channel extension, real-time, memory data output and reliability.The positional information that the ultrasonic signal of 120 probes of super sound DAQ and accelerometer 5 obtain through data processing inputs built-in PC platform 8 simultaneously, and ultrasonic test data and locator data require stringent synchronization, and synchro control adopts synchronous activation schedule averaging method.Data store and adopt USB flash disk reservoir, can take out USB flash disk reservoir at the end of detection, realize the display of thickness measuring data by off-line analysis process.Before examinations, for pipeline specifications material, the ultrasonic line parameter that sticks into is arranged, comprise open passage, the sampling delay time be set, sampling gain, sample frequency, type of waveform, baseline setting, sampling depth etc., obtain buffer zone address, realize the initialization of ultrasonic board.When wall thickness detects, then the family of power and influence is entangled shape inner-walls of duct B1 water/steel interface echo and pipeline outer wall B2 steel/Air Interface echo; And using the mistiming (or distance) of B1 water/steel interface echo and B2 steel/Air Interface echo as analytic signal, and compose with a series of color coding, with color regimes display pressure pipeline wall thickness value, in real time by the change of color on C scintigram, the wall thickness situation of whole pressure pipeline can be seen.After completing on-line checkingi task, take out and detect data, utilize the detection data analysis system of off-line to process the data stored, complete pipeline thickness measuring data processing and display.
Also comprise acceleration in spherical densely covered formula Probe Ultrasonic Searching measuring thickness device and take into account magnetometer and high-effect battery.The acceleration information that the three axis accelerometer carried by inside is recorded, obtain smoothly detecting ball in the duct the distance of process.The corrosion condition data that ultrasonic probe collects, in conjunction with the Distance geometry positional information that accelerometer data calculates, position the hot spot of pipeline.Magnetometer can from the Position Approximate of pipeline external application magneto sensor detection measuring thickness device.High-effect battery realizes the power supply to channel ultrasonic card 3, accelerometer 5 built-in PC platform 8.
After whole spheroid testing process completes, carry out tailing in work by ball collecting device, after the USB flash disk reservoir in spheroid is taken out, import data into PC, resolved by software.When specifically processing, by relative position, probe plane stretch-out view is generated to one group of probe that can obtain ultrasonic thickness measurement signal in 120 probes, and with color regimes display pressure pipeline wall thickness value, thus obtain the wall thickness situation of whole pressure pipeline.Just the defect of some wall thickness reduction classes can be detected by graphical analysis, the burn into medium comprising surface washes away the erosion, surface damage etc. that cause, thus judges the safety case of whole pressure pipeline system.
Ultrasonic card described in the utility model, probe assembly, acceleration are taken into account magnetometer, high-effect battery etc. and all can directly outsourcing be obtained.
Finally, it should be noted that above what enumerate is only specific embodiment of the utility model.Obviously, the utility model is not limited to above embodiment, can also have a lot of distortion.All distortion that those of ordinary skill in the art can directly derive or associate from content disclosed in the utility model, all should think protection domain of the present utility model.
Claims (10)
1. detect with a spherical densely covered formula Probe Ultrasonic Searching measuring thickness device in pressure pipeline, it is characterized in that: comprise spherical shell (1), spherical outer cover (4), some ultrasonic probes (2) and signal processing apparatus; Described some ultrasonic probes are distributed on spherical shell, and are connected by the signal processing apparatus of wire with spherical shell inside; Described spherical outer cover bag is attached to the outer wall of spherical shell, and opens and be shaped with some through holes corresponding with ultrasonic probe position (4-3).
2. detect in a kind of pressure pipeline according to claim 1 with spherical densely covered formula Probe Ultrasonic Searching measuring thickness device, it is characterized in that: described signal processing apparatus comprises built-in PC platform (8) and connected channel ultrasonic card (3), USB flash disk reservoir (9), high-effect battery (7), and channel ultrasonic card is connected with described some ultrasonic probes.
3. detect in a kind of pressure pipeline according to claim 2 with spherical densely covered formula Probe Ultrasonic Searching measuring thickness device, it is characterized in that: described spherical shell offers the tapped through hole (14) corresponding with USB flash disk reservoir position, this tapped through hole realizes sealing by thread plug (10) and O-ring seal (13), spherical outer cover offers the through hole (4-4) being beneficial to thread plug and passing through.
4. detect with spherical densely covered formula Probe Ultrasonic Searching measuring thickness device in a kind of pressure pipeline according to Claims 2 or 3, it is characterized in that: described signal processing apparatus also comprises accelerometer (5) and magnetometer (6), and this accelerometer is connected with described built-in PC platform with magnetometer.
5. detect in a kind of pressure pipeline according to claim 1 with spherical densely covered formula Probe Ultrasonic Searching measuring thickness device, it is characterized in that: described some ultrasonic probes all along the radially layout of spherical shell, outer wall indentation one segment distance of the relatively spherical outer cover in outer end of each ultrasonic probe.
6. detect with spherical densely covered formula Probe Ultrasonic Searching measuring thickness device in a kind of pressure pipeline according to claim 1, it is characterized in that: described some ultrasonic probes all adopt Circular wafer, the arranged outside of Circular wafer has the concavees lens focused on for sound wave.
7. detect in a kind of pressure pipeline according to claim 1 with spherical densely covered formula Probe Ultrasonic Searching measuring thickness device, it is characterized in that: described spherical shell is formed by screw thread (15) docking by two hemispherical Shells (1-1,1-2), joint is by O-ring seal (12) sealing.
8. detect with spherical densely covered formula Probe Ultrasonic Searching measuring thickness device in a kind of pressure pipeline according to claim 7, it is characterized in that: described hemispherical Shell adopts metal to make.
9. detect with spherical densely covered formula Probe Ultrasonic Searching measuring thickness device in a kind of pressure pipeline according to claim 1, it is characterized in that: the external diameter of described spherical outer cover is greater than the internal diameter of pipe under test, thus forms interference fit with pipe under test.
10. detect in a kind of pressure pipeline according to claim 1 with spherical densely covered formula Probe Ultrasonic Searching measuring thickness device, it is characterized in that: described spherical outer cover is formed by connecting by cementing agent by two semisphere leather cups (4-1), each semisphere leather cup adopts highly elastic material to make.
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| CN201520654497.9U CN204902794U (en) | 2015-08-27 | 2015-08-27 | Detect in pipeline under pressure with spherical formula probe ultrasonic thickness measurement device that gathers |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043312A (en) * | 2015-08-27 | 2015-11-11 | 浙江省特种设备检验研究院 | Spherical densely-covered type probe ultrasonic thickness measurement device used for detection in pressure pipeline |
| CN109945924A (en) * | 2019-03-26 | 2019-06-28 | 焦作大学 | A kind of adjustable spherical housing construction of pipe robot |
-
2015
- 2015-08-27 CN CN201520654497.9U patent/CN204902794U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043312A (en) * | 2015-08-27 | 2015-11-11 | 浙江省特种设备检验研究院 | Spherical densely-covered type probe ultrasonic thickness measurement device used for detection in pressure pipeline |
| CN105043312B (en) * | 2015-08-27 | 2017-11-24 | 浙江省特种设备检验研究院 | The spherical densely covered formula Probe Ultrasonic Searching measuring thickness device of detection in a kind of pressure pipeline |
| CN109945924A (en) * | 2019-03-26 | 2019-06-28 | 焦作大学 | A kind of adjustable spherical housing construction of pipe robot |
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Granted publication date: 20151223 Effective date of abandoning: 20171124 |