CN108387579A - A kind of experimental rig of the oxidation film deformation of pipe fitting sample - Google Patents
A kind of experimental rig of the oxidation film deformation of pipe fitting sample Download PDFInfo
- Publication number
- CN108387579A CN108387579A CN201810179275.4A CN201810179275A CN108387579A CN 108387579 A CN108387579 A CN 108387579A CN 201810179275 A CN201810179275 A CN 201810179275A CN 108387579 A CN108387579 A CN 108387579A
- Authority
- CN
- China
- Prior art keywords
- pipe fitting
- fitting sample
- collet
- oxidation film
- environmental chamber
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/8422—Investigating thin films, e.g. matrix isolation method
Abstract
The invention discloses a kind of experimental rigs of the oxidation film of pipe fitting sample deformation, including environmental chamber and clamp system；The environment cavity of environmental chamber being internally provided with for accommodating pipe fitting sample, environment cavity are respectively arranged with the first stomidium and the second stomidium in the both ends of corresponding axis direction when being placed to environmental chamber body along pipe fitting sample；The camera that corresponding image information is deformed for acquiring the oxidation film of pipe fitting sample is provided in the circumferential side wall of environmental chamber, camera is connected with image processing unit；Image processing unit the image information corresponding to different time points is compared, for carrying out processing analysis to image information to obtain the deformation of the oxidation film of pipe fitting sample in the corresponding period；Clamp system can clamp pipe fitting sample and pipe fitting sample is made to keep around its own axis rotation.The camera of above-mentioned experimental rig can realize the analysis of the oxidation film deformation to pipe fitting sample.
Description
Technical field
The present invention relates to a kind of changes of the oxidation film of the oxidation film deformation technology field of pipe fitting sample more particularly to pipe fitting sample
The experimental rig of shape.
Background technology
Since tubing is under feature environment (such as low temperature or high temperature), for the stability of the temperature of guarantee environment, generally need
Pipe fitting sample is clamped in closed space, and it is difficult to realize that pipe fitting sample is clamped under closed environment.Because of pipe fitting
Whether deformation of the oxidation film layer on surface under corresponding environment obviously directly affects the performance of corresponding pipe fitting.And for pipe fitting
For the low temperature environment analysis of the oxidation film deformation of sample, necessary not only for the folder for carrying out cryogenic seal environment to pipe fitting sample
It holds, and the circumferential deformation situation of the oxidation film layer on the surface of pipe fitting sample is analyzed so that the oxidation of pipe fitting sample
The analysis of film deformation is more difficult to realize.
In conclusion how to solve to realize the problem analysis that the oxidation film of pipe fitting sample deforms, it has also become art technology
Personnel's technical barrier urgently to be resolved hurrily.
Invention content
The object of the present invention is to provide a kind of experimental rigs of the oxidation film of pipe fitting sample deformation, to realize pipe fitting sample
The analysis of oxidation film deformation.
To achieve the goals above, the present invention provides a kind of experimental rigs of the oxidation film of pipe fitting sample deformation, including
Environmental chamber and clamp system；
The environment cavity of the environmental chamber being internally provided with for accommodating the pipe fitting sample, environment cavity edge
The pipe fitting sample is respectively arranged with the first stomidium and in the both ends of corresponding axis direction when placing to the environmental chamber body
Two stomidiums；It is provided with the oxidation film for acquiring the pipe fitting sample in the circumferential side wall of the environmental chamber and deforms corresponding figure
As the camera of information, the camera is connected with image processing unit；Described image processing unit is used to believe described image
Breath carries out processing analysis, the described image information corresponding to different time points is compared, to obtain institute in the corresponding period
State the deformation of the oxidation film of pipe fitting sample；
The clamp system includes the first collet compatible with first stomidium, compatible with second stomidium
Second collet, the first driving mechanism for driving first collet or second collet to be rotated around Pivot Point Center, it is described
The axle center of first collet and the axle center of second collet are corresponding when being placed to the environmental chamber body with the pipe fitting sample
Axle center overlap, first collet can relatively described second collet placed to the environmental chamber body along the pipe fitting sample
When corresponding axis direction move in a straight line, and first collet and second collet are respectively used to and the pipe fitting sample
Both ends offset.
Preferably, the clamp system further includes corresponding axis when being placed to the environmental chamber body with the pipe fitting sample
The parallel bottom support plate of the heart, the first fulcrum bearing for supporting first collet, second for supporting second collet
Fulcrum bearing and the second driving mechanism, first fulcrum bearing and/or second fulcrum bearing are slidably matched with the bottom support plate,
Second driving mechanism is for driving first fulcrum bearing and second fulcrum bearing close to each other and separate.
Preferably, second driving mechanism is cylinder.
Preferably, it is both provided on first collet and second collet and is mutually fitted with the cylindrical wall of the pipe fitting sample
The positioning rest matched.
Preferably, the wall of the environmental chamber includes hypostracum, cryogenic liquid layer, insulating layer and outer successively from inside to outside
Shell.
Preferably, it is additionally provided with the liquid injection port being connected with the cryogenic liquid layer on the end wall of the environmental chamber and goes out
Liquid mouth.
Preferably, first driving mechanism includes motor and reduction gearing.
Preferably, the outer end of first collet is additionally provided with the first sealing ring with first stomidium sealing cooperation；
The outer end of second collet is additionally provided with the second sealing ring with second stomidium sealing cooperation.
Preferably, the environmental chamber is cylindrical vessel.
Preferably, further include the holder for being used to support the environmental chamber.
Content, the experimental rig of the oxidation film deformation of above-mentioned pipe fitting sample, including environment are introduced compared to background technology to hold
Device and clamp system；The environment cavity of environmental chamber being internally provided with for accommodating pipe fitting sample, environment cavity are tried along pipe fitting
Sample is respectively arranged with the first stomidium and the second stomidium in the both ends of corresponding axis direction when placing to environmental chamber body；Environmental chamber
Circumferential side wall on be provided with the camera that corresponding image information is deformed for acquiring the oxidation film of pipe fitting sample, camera connects
It is connected to image processing unit；Image processing unit to image information for carrying out processing analysis, corresponding to different time points
Image information is compared, to obtain the deformation of the oxidation film of pipe fitting sample in the corresponding period；Clamp system include with
Compatible first collet of first stomidium, the second collet compatible with the second stomidium are pressed from both sides for the first collet of driving or second
It is placed with pipe fitting sample in the axle center of the first driving mechanism that head is rotated around Pivot Point Center, the axle center of the first collet and the second collet
Corresponding axle center overlaps when in environmental chamber body, and the first collet can be placed along pipe fitting sample to environment cavity with respect to the second collet
Corresponding axis direction moves in a straight line when interior, and the first collet and the second collet are respectively used to the both ends phase with pipe fitting sample
It supports.In use, the pipe fitting sample being analysed to first is put into the environmental chamber body of environmental chamber above-mentioned experimental rig, is made
First collet and the second collet are close to each other, clamp the both ends of pipe fitting sample by the close clamping force of the two, pass through environment
The camera being arranged on containers peripheral sidewall takes pictures to the structure of the oxidation film layer of pipe fitting specimen surface, due to the first collet
Or second collet under the driving of the first driving mechanism around Pivot Point Center rotate, then drive pipe fitting sample around Pivot Point Center turn
It is dynamic, therefore camera can take the structural images information of the oxidation film layer of the complete cycle of pipe fitting sample, then by image at
Reason unit carries out processing analysis to image information, and the image information corresponding to different time points is compared, to obtain pair
The deformation of the oxidation film of pipe fitting sample in the period is answered, namely realizes the analysis of the oxidation film deformation to pipe fitting sample.
Description of the drawings
Fig. 1 is the overall structure diagram for the experimental rig that the oxidation film of pipe fitting sample provided in an embodiment of the present invention deforms
(showing pipe fitting sample)；
Fig. 2 is the cross section structure signal for the experimental rig that the oxidation film of pipe fitting sample provided in an embodiment of the present invention deforms
Figure；
Fig. 3 is the overall structure diagram for the experimental rig that the oxidation film of pipe fitting sample provided in an embodiment of the present invention deforms
(pipe fitting sample is not shown)；
Fig. 4 is the portions the A enlarged structure schematic diagram of Fig. 3；
Fig. 5 is the portions the B enlarged structure schematic diagram of Fig. 3.
In figure 1 above-Fig. 5,
Environmental chamber 1, pipe fitting sample 2, environment cavity 3, camera 4, image processing unit 5, the first collet 6, second folder
First 7, bottom support plate 8, the first fulcrum bearing 9, the second fulcrum bearing 10, the second driving mechanism 11, positioning rest 12, hypostracum 13, low
Geothermal liquid layer 14, insulating layer 15, outer shell 16, motor 17, reduction gearing 18, the first sealing ring 19, the second sealing ring 20, holder
21, liquid injection port 22, shaft 23, guide rail 24.
Specific implementation mode
Core of the invention is to provide a kind of experimental rig of the oxidation film deformation of pipe fitting sample, to realize pipe fitting sample
The analysis of oxidation film deformation.
In order to make those skilled in the art more fully understand technical solution provided by the invention, below in conjunction with attached drawing and
The present invention is described in further detail for specific embodiment.
As Figure 1-Figure 5, the experimental rig of the oxidation film deformation of a kind of pipe fitting sample provided in an embodiment of the present invention, packet
Include environmental chamber 1 and clamp system；The environment cavity 3 of environmental chamber 1 being internally provided with for accommodating pipe fitting sample 2, environment
Cavity 3 is respectively arranged with the first stomidium and the in the both ends of corresponding axis direction when being placed to along environment cavity 3 along pipe fitting sample 2
Two stomidiums；It is provided with the oxidation film for acquiring pipe fitting sample 2 in the circumferential side wall of environmental chamber and deforms corresponding image information
Camera 4, camera 4 is connected with image processing unit 5；Image processing unit 5 is used to carry out processing analysis to image information,
Image information corresponding to different time points is compared, to obtain the change of the oxidation film of pipe fitting sample 2 in the corresponding period
Shape situation；Clamp system includes the first collet 6 compatible with the first stomidium, the second collet 7 compatible with the second stomidium, uses
In the first driving mechanism for driving the first collet 6 or the second collet 7 to be rotated around Pivot Point Center, the axle center and second of the first collet 6
The axle center of collet 7 overlaps in corresponding axle center when being placed in environment cavity 3 with pipe fitting sample 2, and the first collet 6 can be with respect to the
Two collets 7 when being placed to along environment cavity 3 along pipe fitting sample 2 corresponding axis direction move in a straight line, and the first collet 6 and the
Two collets 7 are respectively used to offset with the both ends of pipe fitting sample 2, specially：When the first collet and the second collet close to each other, energy
It is enough to clamp pipe fitting sample；When the first collet and the second collet are located remotely from each other, it is respectively used to clamp the both ends of pipe fitting sample.
Above-mentioned pipe fitting sample oxidation film deformation experimental rig in use, the pipe fitting sample being analysed to first
It is put into the environmental chamber body of environmental chamber, keeps the first collet and the second collet close to each other, it will by the close clamping force of the two
The both ends of pipe fitting sample clamp, by the camera that is arranged in environmental chamber circumferential side wall to the oxidation film layer of pipe fitting specimen surface
Structure take pictures, since the first collet or the second collet rotate under the driving of the first driving mechanism around Pivot Point Center, after
And pipe fitting sample is driven to be rotated around Pivot Point Center, therefore camera can take the knot of the oxidation film layer of the complete cycle of pipe fitting sample
Then structure image information carries out processing analysis by image processing unit to image information, by the figure corresponding to different time points
As information is compared, to obtain the deformation of the oxidation film of pipe fitting sample in the corresponding period, namely realize to pipe
The analysis of the oxidation film deformation of part sample.
What needs to be explained here is that above-mentioned clamp system further includes corresponding when being placed to environmental chamber body with pipe fitting sample 2
The bottom support plate 8 of axis parallel, the first fulcrum bearing 9 for supporting the first collet 6, second for supporting the second collet 7
Fulcrum bearing 10 and the second driving mechanism 11, the first fulcrum bearing 9 and/or the second fulcrum bearing 10 are slidably matched with bottom support plate 8, and second
Driving mechanism 11 is close to each other and separate for driving the first fulcrum bearing 9 and the second fulcrum bearing 10.Specific implementation process is second
Driving mechanism can only drive the first fulcrum bearing namely the first fulcrum bearing to be slidably matched with bottom support plate, the second fulcrum bearing phase
It is fixed to bottom support plate, come realize the first fulcrum bearing and the second fulcrum bearing closer or far from；Can also be only to drive
Second fulcrum bearing namely the second fulcrum bearing are slidably matched with bottom support plate, and the first fulcrum bearing opposing floor portion support plate is fixed, come
Realize the first fulcrum bearing and the second fulcrum bearing closer or far from；Or it is the second driving mechanism while drives the first fulcrum bearing
It can opposing floor portion bearing sliding with the second fulcrum bearing namely the first fulcrum bearing and the second fulcrum bearing.In addition it should be noted that
The mode that above-mentioned first fulcrum bearing and/or the second fulcrum bearing are slidably matched with bottom support plate can be that setting is led on the support plate of bottom
Rail 24 is arranged in corresponding fulcrum bearing and is slidably matched with the sliding groove structure that corresponding rails are slidably matched to realize, or is this
The common structure that other are slidably matched of field technology personnel, for example the idler wheel with corresponding rails cooperation is set in corresponding fulcrum bearing
It is slidably matched to realize.
In some specific embodiments, above-mentioned second driving mechanism 11 is cylinder.Of course, it should be understood that above-mentioned
The mode of cylinder driving is only the preferable examples of the embodiment of the present invention, and can also be those skilled in the art, common other are straight
Line driving mechanism, such as leading screw driving or linear motor driving etc..
In some more particular embodiments, in order to enable the both ends of pipe fitting sample are pressed from both sides with the first collet and second respectively
Head axle center, which overlaps, to be easier, and is both provided on corresponding first collet 6 and the second collet 7 and is adapted with the cylindrical wall of pipe fitting sample 2
Positioning rest 12.Of course, it should be understood that the mode that above-mentioned positioning rest is positioned is only the embodiment of the present invention
Preferable examples, can also be other common positioning methods of those skilled in the art, for example, with pipe fitting sample internal diameter phase
The tapered protrusion etc. matched.
It is further to note that in order to enable the environmental chamber body of environmental chamber can realize the specific temperature ring of low temperature
The wall in border, above-mentioned environmental chamber 1 includes hypostracum 13, cryogenic liquid layer 14, insulating layer 15 and outer shell successively from inside to outside
16.Of course, it should be understood that above-mentioned wall structure be only the embodiment of the present invention for low temperature environment structure wall it is excellent
Example is elected, can also be that corresponding cryogenic liquid layer, which is substituted for the common others of those skilled in the art, to be generated
The airflow layer of cryogenic effect.
For the ease of forming cryogenic liquid layer, generally correspond to be additionally provided on the end wall of environmental chamber 1 and cryogenic liquid layer
14 liquid injection ports 22 being connected and liquid outlet, and then cryogenic liquid is entered by liquid injection port, is exported by liquid outlet, and low temperature is constituted
The fluid of liquid level remains the state of continuous renewal, then enables to cryogenic liquid layer that can remain stable low
Temp effect.
It is further to note that in general the first driving mechanism includes motor 17 and reduction gearing 18, of course for
It can realize that the driving of the rotation to the first collet or the second collet, those skilled in the art will readily appreciate that, also
It should include the shaft 23 being fixedly connected with corresponding collet, be driven by motor, after reduction gearing is slowed down, output extremely turns
Axis, shaft drive collet rotation.The connection type of collet and shaft generally selects dismountable connection type to be attached, in this way
More convenient experimental rig can adapt to the pipe fitting sample of a variety of different models, and correspondence is only needed to change for different pipe fitting samples
Collet.Dismountable connection type can be specifically, by the fixed mode of screw after collet is nested with shaft, and or
Person is other common dismountable connection types of those skilled in the art, such as the mode etc. being directly threadedly coupled.
The outer end of influence in order to avoid external environment to environmental chamber vivo environment temperature, corresponding first collet 6 is also set up
There is the first sealing ring 19 with the sealing cooperation of the first stomidium；The outer end of second collet 7, which is additionally provided with to seal with the second stomidium, to be coordinated
The second sealing ring 20.In this way so that the pipe fitting sample of environment inside cavity is in the shape of high-seal always during the test
State avoids the interference of external environment.
In addition, above-mentioned environmental chamber 1 is preferably cylindrical vessel.Environmental chamber body fluid circle of position tubular corresponding in this way, due to
Temperature in environmental chamber body keeps mainly providing by wall, by be designed to cylindrical shape make the wall of environmental chamber away from
It is maintained at a distance from pipe fitting sample in range equidistant or that difference is smaller, so that the circumferential temperature of pipe fitting sample is kept
It is more balanced.Of course, it should be understood that above-mentioned columnar structure of container is only the most preferred side of the embodiment of the present invention
Case can also be other common structure of container of those skilled in the art.
It should also be noted that, in order to enable the axle center of the corresponding environment cavity of environmental chamber and the first collet and the second folder
The axle center of head is opposite, and in general, environmental chamber further includes the holder 21 for being used to support environmental chamber 1.And holder is specific
Quantity can carry out rational selection according to the axial length of actual environment container and be arranged to multiple arranged for interval holders.
The experimental rig of the oxidation film of pipe fitting sample provided by the present invention deformation is described in detail above.It needs
Illustrating, each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are
Difference from other examples, the same or similar parts between the embodiments can be referred to each other.
Principle and implementation of the present invention are described for specific case used herein, and above example is said
It is bright to be merely used to help understand the core idea of the present invention.It should be pointed out that for those skilled in the art,
Without departing from the principle of the present invention, can be with several improvements and modifications are made to the present invention, these improvement and modification
It falls into the protection domain of the claims in the present invention.
Claims (10)
1. a kind of experimental rig of the oxidation film deformation of pipe fitting sample, which is characterized in that including environmental chamber (1) and clamping machine
Structure；
The environment cavity (3) of the environmental chamber (1) being internally provided with for accommodating the pipe fitting sample (2), the environment
Cavity (3) is placed to the environment cavity (3) along the pipe fitting sample (2) and is respectively set at the both ends of corresponding axis direction when interior
There are the first stomidium and the second stomidium；It is provided in the circumferential side wall of the environmental chamber for acquiring the pipe fitting sample (2)
Oxidation film deforms the camera (4) of corresponding image information, and the camera (4) is connected with image processing unit (5)；The figure
Picture processing unit (5) to described image information for carrying out processing analysis, by the described image information corresponding to different time points
It is compared, to obtain the deformation of the oxidation film of the pipe fitting sample (2) in the corresponding period；
The clamp system includes the first collet (6) compatible with first stomidium, compatible with second stomidium
Second collet (7), the first driving for driving first collet (6) or second collet (7) to be rotated around Pivot Point Center
Mechanism, the axle center of first collet (6) and the axle center of second collet (7) are placed with the pipe fitting sample (2) to institute
State environment cavity (3) it is interior when corresponding axle center overlap, first collet (6) can relatively described second collet (7) along described
Corresponding axis direction moves in a straight line when pipe fitting sample (2) places interior to the environment cavity (3), and first collet
(6) and second collet (7) is respectively used to offset with the both ends of the pipe fitting sample (2).
2. the experimental rig of the oxidation film deformation of pipe fitting sample as described in claim 1, which is characterized in that the clamp system
Further include the bottom support plate (8) of corresponding axis parallel when being placed to the environmental chamber body with the pipe fitting sample (2), be used for
Support the first fulcrum bearing (9) of first collet (6), the second fulcrum bearing (10) for supporting second collet (7) and
Second driving mechanism (11), first fulcrum bearing (9) and/or second fulcrum bearing (10) are sliding with the bottom support plate (8)
Dynamic cooperation, second driving mechanism (11) is for driving first fulcrum bearing (9) mutual with second fulcrum bearing (10)
It is close and separate.
3. the experimental rig of the oxidation film deformation of pipe fitting sample as described in claim 1, which is characterized in that second driving
Mechanism (11) is cylinder.
4. the experimental rig of the oxidation film deformation of pipe fitting sample as described in claim 1, which is characterized in that first collet
(6) and on second collet (7) it is both provided with positioning rest (12) compatible with the cylindrical wall of pipe fitting sample (2).
5. the experimental rig of the oxidation film deformation of pipe fitting sample as described in claim 1, which is characterized in that the environmental chamber
(1) wall includes hypostracum (13), cryogenic liquid layer (14), insulating layer (15) and outer shell (16) successively from inside to outside.
6. the experimental rig of the oxidation film deformation of pipe fitting sample as claimed in claim 5, which is characterized in that the environmental chamber
(1) liquid injection port (22) being connected with the cryogenic liquid layer (14) and liquid outlet are additionally provided on end wall.
7. the experimental rig of the oxidation film deformation of pipe fitting sample as described in claim 1, which is characterized in that first driving
Mechanism includes motor (17) and reduction gearing (18).
8. the experimental rig of the oxidation film deformation of pipe fitting sample as described in claim 1, which is characterized in that first collet
(6) outer end is additionally provided with the first sealing ring (19) with first stomidium sealing cooperation；The outer end of second collet (7)
It is additionally provided with the second sealing ring (20) with second stomidium sealing cooperation.
9. the experimental rig of the oxidation film deformation of pipe fitting sample as described in claim 1, which is characterized in that the environmental chamber
(1) it is cylindrical vessel.
10. the experimental rig of the oxidation film deformation of pipe fitting sample as described in claim 1, which is characterized in that further include being used for
Support the holder (21) of the environmental chamber (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810179275.4A CN108387579B (en) | 2018-03-05 | 2018-03-05 | Testing device for oxide film deformation of pipe fitting sample |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810179275.4A CN108387579B (en) | 2018-03-05 | 2018-03-05 | Testing device for oxide film deformation of pipe fitting sample |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108387579A true CN108387579A (en) | 2018-08-10 |
| CN108387579B CN108387579B (en) | 2021-06-22 |
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ID=63069855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810179275.4A Active CN108387579B (en) | 2018-03-05 | 2018-03-05 | Testing device for oxide film deformation of pipe fitting sample |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108387579B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1104665C (en) * | 1997-07-16 | 2003-04-02 | 三星电子株式会社 | Apparatus for detecting concentration of developer |
| US20030147132A1 (en) * | 2000-04-05 | 2003-08-07 | Wilhelm Behnsen | In-situ microscope device reactors |
| CN1896683A (en) * | 2005-08-22 | 2007-01-17 | 中国科学院长春光学精密机械与物理研究所 | Realtime deformation measuring device based on video image |
| CN103615984A (en) * | 2013-12-02 | 2014-03-05 | 四川中测流量科技有限公司 | Comprehensive detection device of pipe body |
-
2018
- 2018-03-05 CN CN201810179275.4A patent/CN108387579B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1104665C (en) * | 1997-07-16 | 2003-04-02 | 三星电子株式会社 | Apparatus for detecting concentration of developer |
| US20030147132A1 (en) * | 2000-04-05 | 2003-08-07 | Wilhelm Behnsen | In-situ microscope device reactors |
| CN1896683A (en) * | 2005-08-22 | 2007-01-17 | 中国科学院长春光学精密机械与物理研究所 | Realtime deformation measuring device based on video image |
| CN103615984A (en) * | 2013-12-02 | 2014-03-05 | 四川中测流量科技有限公司 | Comprehensive detection device of pipe body |
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| Publication number | Publication date |
|---|---|
| CN108387579B (en) | 2021-06-22 |
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