CN112113848A - Device is applyed to submarine pipeline initial defect - Google Patents
Device is applyed to submarine pipeline initial defect Download PDFInfo
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- CN112113848A CN112113848A CN202010935083.9A CN202010935083A CN112113848A CN 112113848 A CN112113848 A CN 112113848A CN 202010935083 A CN202010935083 A CN 202010935083A CN 112113848 A CN112113848 A CN 112113848A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
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Abstract
The embodiment of the invention relates to a submarine pipeline initial defect applying device, which comprises: the device comprises a hydraulic module, an electrical control module, a device table body and an additional module; the hydraulic module is used for applying initial defects to the full-scale submarine pipeline; the electrical control module is used for controlling the hydraulic module; the device platform body is used for providing stability in the process of applying initial defects to the full-scale submarine pipeline; the additional module is used for expanding the applicability of the full-scale submarine pipeline.
Description
Technical Field
The embodiment of the invention relates to the technical field of ocean engineering, in particular to a submarine pipeline initial defect applying device.
Background
Subsea pipelines are an important means of oil and gas transportation, and their safe operation is linked to the whole oil and gas transportation process. During the manufacturing, transportation, installation and operation of the submarine pipeline, certain defects such as pits and ovality occur due to the complex load effects of bending moment, axial force, external pressure and the like. Defects in a subsea pipeline will pose a significant threat to its safe operation, e.g. the presence of a defect will substantially reduce the crushing pressure of the subsea pipeline, and thus the subsea pipeline with the initial defect needs to be investigated.
Subsea pipelines can be subject to defects in the event of impact from a falling object, and can exhibit a certain ovality during manufacturing, transportation, installation and operation. There is currently an experimental device (grant No. CN 208171554U) for simulating the impact of a pipeline on a falling object, which can be used for applying the pit defect of the submarine pipeline. The current research on subsea pipeline defects focuses primarily on defect detection, and devices for applying initial defects to pipelines are not common. In practice, there are initial defects imposed on the pipe using simple hydraulic devices. At present, devices for applying initial defects to pipelines all have certain disadvantages:
(1) the precision of the experiment cannot be guaranteed. Taking a common hydraulic device as an example, when the initial defect of the pipeline is applied, the specific stroke data of the pressure head can not be read due to the lack of related instrument data, and the defect degree required by scientific experiments can not be reached.
(2) The application range is smaller. The ordinary hydraulic device has a single pressure head, can apply fewer pipeline defects, cannot meet the increasingly-propelled scientific research of submarine pipelines, needs workers with abundant experience to operate, and can cause larger defects and obtain no required initial defects if the pressure is too high.
Disclosure of Invention
In view of the above, to solve the problems in the prior art, embodiments of the present invention provide an initial defect applying apparatus for a submarine pipeline.
The embodiment of the invention provides a submarine pipeline initial defect applying device, which comprises: the device comprises a hydraulic module, an electrical control module, a device table body and an additional module;
the hydraulic module is used for applying initial defects to the full-scale submarine pipeline;
the electrical control module is used for controlling the hydraulic module;
the device platform body is used for providing stability in the process of applying initial defects to the full-scale submarine pipeline;
the additional module is used for expanding the applicability of the full-scale submarine pipeline.
In an alternative embodiment, the subsea conduit comprises a full scale subsea conduit or a scaled subsea conduit.
In an optional embodiment, when the submarine pipeline is the scaled-down submarine pipeline, the device table body comprises a gasket, an upper bottom plate, a support rod, a lower bottom plate, a support seat, a base, a self-locking universal wheel, a slide rail, a crank and a scaled-down submarine pipeline clamp;
the gasket is located in the center of the upper surface of the upper base plate, the upper base plate and the lower base plate are fixed through the supporting rods, the lower base plate and the base are fixed through the supporting seat, the self-locking universal wheel is fixed to the lower surface of the base, the sliding rail is arranged on the upper surface of the lower base plate, the scaling-down submarine pipeline clamp is arranged on the sliding rail, and the crank is arranged on the surface of the lower base plate.
In an alternative embodiment, the scaled subsea conduit clamp lacks corners above the inside thereof for securing the scaled subsea conduit.
In an optional embodiment, when the submarine pipeline is a full-scale submarine pipeline, the device platform body comprises a gasket, an upper bottom plate, a support rod, a lower bottom plate, a support seat, a base, a self-locking universal wheel, a slide rail, a crank and a full-scale submarine pipeline clamp;
the gasket is located in the center of the upper surface of the upper base plate, the upper base plate and the lower base plate are fixed through the supporting rods, the lower base plate and the base are fixed through the supporting seat, the self-locking universal wheel is fixed to the lower surface of the base, the sliding rail is arranged on the upper surface of the lower base plate, the full-scale submarine pipeline clamp is arranged on the sliding rail, and the crank is arranged on the surface of the lower base plate.
In an optional embodiment, the full scale submarine pipeline clamp is quadrilateral on the inner side, and corners are protruded on the outer side, and the inner side of the full scale submarine pipeline clamp is used for fixing the full scale submarine pipeline.
In an optional embodiment, the hydraulic module comprises an oil inlet pipe, a main body, a pressure rod, a pressure head, an electric switch, an oil inlet control switch and a remote controller;
the oil inlet pipe is fixedly connected with the main body, the main body is fixedly connected with the pressure rod, the pressure rod is fixedly connected with the pressure head, the electric switch is arranged on the upper surface of the main body, and the oil inlet control switch is arranged on the lower surface of the main body;
the main body is fixed at the central position of the upper surface of the upper bottom plate through the gasket, the pressure rod penetrates through the central position of the upper surface of the upper bottom plate, and the pressure head is in close contact with the submarine pipeline.
In an alternative embodiment, the ram comprises a cylindrical ram.
In an alternative embodiment, the electrical control module is disposed on an upper surface of the upper base plate.
In an alternative embodiment, the additional module comprises a rectangular indenter, a regular pentagonal indenter, a circular indenter, a spherical indenter.
The device for applying the initial defect of the submarine pipeline provided by the embodiment of the invention adopts the electric control module, has higher precision and more convenient operation, is beneficial to more quickly and better applying the initial defect of the submarine pipeline, has smaller volume, is convenient to move and carry, and is convenient for a user to operate in different places.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the embodiments of the present invention, and it is also possible for a person skilled in the art to obtain other drawings based on the drawings.
FIG. 1 is a schematic structural view of an initial defect applying apparatus for a submarine pipeline according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a device stage according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of another apparatus table according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a hydraulic module according to an embodiment of the present invention;
FIG. 5 is a schematic view of one form of indenter of an embodiment of the present invention;
FIG. 6 is a schematic flow chart illustrating an implementation of a method for applying an initial defect to a subsea pipeline according to an embodiment of the present invention;
FIG. 7 is a schematic structural view of another subsea pipeline initial flaw application apparatus according to an embodiment of the present invention;
the reference numbers in the figures illustrate: 1-a hydraulic module; 2-an electrical control module; 3 a device table body; 4 full scale submarine pipeline (local); 5-an additional module; 6-scaling-scale submarine pipeline device platform body; 7 scaling-scale submarine pipelines (local); 8-oil inlet pipe; 9-a body; 10-a compression bar; 11-a cylindrical ram; 12-an electric switch; 13-an oil inlet control switch; 14-a remote controller; 15-a gasket; 16-an upper base plate; 17-a support bar; 18-lower sole plate; 19-a support seat; 20-a base; 21-self-locking universal wheel; 22-full scale pipe clamp; 23-a slide rail; 24-a crank; 25-scaling rule pipe clamp; 26-a rectangular pressure head; 27-a regular pentagonal indenter; 28-round ram; 29-spherical indenter.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
For the convenience of understanding of the embodiments of the present invention, the following description will be further explained with reference to specific embodiments, which are not to be construed as limiting the embodiments of the present invention.
As shown in fig. 1, a schematic structural diagram of an initial defect applying apparatus for a submarine pipeline according to an embodiment of the present invention includes: the device comprises a hydraulic module, an electrical control module, a device table body and an additional module;
the hydraulic module is used for applying initial defects to the full-scale submarine pipeline;
the electrical control module is used for controlling the hydraulic module, and can set parameters such as loading speed, pressure head stroke and the like so as to ensure the accuracy of initial defect application;
the device table body is used for providing stability in the process of applying initial defects to the full-scale submarine pipeline, and the mobility of the submarine pipeline initial defect applying device is greatly improved due to the existence of the self-locking universal wheels at the bottom of the device table body;
the additional module is used for expanding the applicability of the full-scale submarine pipeline.
Optionally, the subsea pipeline comprises a full scale subsea pipeline or a scaled subsea pipeline.
Optionally, when the submarine pipeline is a full-scale submarine pipeline, the device table body, as shown in fig. 2, includes a gasket, an upper base plate, a support rod, a lower base plate, a support seat, a base, a self-locking universal wheel, a slide rail, a crank, and a full-scale submarine pipeline clamp.
The gasket is located in the center of the upper surface of the upper base plate, the upper base plate and the lower base plate are fixed through the supporting rods, the lower base plate and the base are fixed through the supporting seat, the self-locking universal wheel is fixed to the lower surface of the base, the sliding rail is arranged on the upper surface of the lower base plate, the full-scale submarine pipeline clamp is arranged on the sliding rail, and the crank is arranged on the surface of the lower base plate.
Optionally, the inner side of the full-scale submarine pipeline clamp is quadrilateral, corners protrude from the outer side of the full-scale submarine pipeline clamp, and the inner side of the full-scale submarine pipeline clamp is used for fixing a full-scale submarine pipeline.
Optionally, when the submarine pipeline is the scale submarine pipeline, the device table body, as shown in fig. 3, includes a gasket, an upper base plate, a support rod, a lower base plate, a support seat, a base, a self-locking universal wheel, a slide rail, a crank, and a scale submarine pipeline clamp.
The gasket is located in the center of the upper surface of the upper base plate, the upper base plate and the lower base plate are fixed through the supporting rods, the lower base plate and the base are fixed through the supporting seat, the self-locking universal wheel is fixed to the lower surface of the base, the sliding rail is arranged on the upper surface of the lower base plate, the scaling-down submarine pipeline clamp is arranged on the sliding rail, and the crank is arranged on the surface of the lower base plate.
Optionally, a corner is missing on the upper side of the inner side of the scaling scale submarine pipeline clamp, and the upper side of the inner side of the scaling scale submarine pipeline clamp is used for fixing the scaling scale submarine pipeline.
Optionally, the hydraulic module, as shown in fig. 4, includes an oil inlet pipe, a main body, a pressure lever, a pressure head, an electric switch, an oil inlet control switch, and a remote controller.
The oil inlet pipe is fixedly connected with the main body, the main body is fixedly connected with the pressing rod, the pressing rod is fixedly connected with the pressing head, the electric switch is arranged on the upper surface of the main body, and the oil inlet control switch is arranged on the lower surface of the main body. Wherein the ram comprises a cylindrical ram.
The main body is fixed at the central position of the upper surface of the upper bottom plate through the gasket, the pressure rod penetrates through the central position of the upper surface of the upper bottom plate, and the pressure head is in close contact with the submarine pipeline.
Optionally, the electrical control module is disposed on the upper surface of the upper base plate.
Optionally, the additional module, as shown in fig. 5, includes a rectangular indenter, a regular pentagonal indenter, a circular indenter, and a spherical indenter.
As shown in fig. 6, an implementation flow diagram of an initial defect applying method for a submarine pipeline according to an embodiment of the present invention is shown, and the method specifically includes the following steps:
s601, fixing the submarine pipeline initial defect applying device and checking.
And S602, replacing the required pressure head and the clamp according to the submarine pipeline with the initial defect according to the preset requirement.
S603, the submarine pipeline needing to be subjected to initial defect application is placed into the submarine pipeline initial defect application device through the hoisting equipment and is fixed through the clamp.
And S604, turning on the electric switch and the oil inlet control switch, and turning on the hydraulic module by using the remote controller so that the pressure head is in contact with the submarine pipeline.
And S605, controlling the hydraulic module to start initial defect application by using the remote controller until the reading in the electric control module meets the preset requirement, and finishing the initial defect application.
Specifically, in the process of using the submarine pipeline initial defect applying device, the submarine pipeline initial defect applying device is firstly checked to check whether the hydraulic module leaks oil or not, whether the pressure lever can move freely or not, whether the electric switch and the oil inlet control switch are intact or not, whether the electric control module can accurately display the stroke of the pressure head and the hydraulic pressure or not, whether the platform body of the device is firm and reliable or not and whether the additional module is intact or not.
Because the submarine pipelines comprise full scale submarine pipelines and scaled submarine pipelines, the device table body in the submarine pipeline initial defect applying device has differences, and when the submarine pipelines are scaled submarine pipelines, the clamps in the device table body can adopt scaled submarine pipeline clamps to clamp scaled submarine pipelines, as shown in fig. 7.
As shown in fig. 4, the oil inlet pipe is used for conveying hydraulic oil, the electric switch and the remote controller are used for opening and closing the electric control system, the oil inlet control switch is used for controlling the hydraulic oil to enter and exit, and the main body, the pressure rod and the cylindrical pressure head are used for applying initial defects, wherein the pressure head can be connected with the pressure heads in different forms through threads.
As shown in fig. 2, the bottom of the submarine pipeline initial defect applying device is provided with four self-locking universal wheels which can move in any direction, so that the submarine pipeline initial defect applying device has strong moving capability and is convenient to transport. The self-locking universal wheel is characterized in that the upper part of the self-locking universal wheel is provided with a base, a lower bottom plate is supported through four supporting seats, and the lower bottom plate is thicker and is an important part for supporting a pipeline. The upper bottom plate and the lower bottom plate are connected through four support rod pieces, and the upper bottom plate is connected with an electrical control device. The full scale clamp moves on the slide rail, and the position of the full scale clamp is controlled by shaking the crank for clamping the submarine pipeline.
According to the experimental requirements, pressure heads in different forms, such as a rectangular pressure head, a regular pentagonal pressure head, a circular pressure head, a spherical pressure head and the like can be selected.
Firstly, locking the self-locking universal wheel, fixing the submarine pipeline initial defect applying device, and replacing a proper pressure head according to the initial defect requirement. A crane and a bracket are combined, a pipeline part needing to be applied with initial defects is placed below a pressure head, and a full scale clamp or a reduced scale pipeline clamp is used for clamping the pipeline. And turning on the electric switch and the oil inlet control switch, and turning on the submarine pipeline initial defect applying device by using the remote controller, so that the cylindrical pressure head is in contact with the submarine pipeline and the submarine pipeline initial defect applying device is turned off. And opening the electric control module, carrying out zero clearing operation and preparing to record data. And (4) opening the submarine pipeline initial defect applying device by using a remote controller, starting initial defect applying until the reading of the electrical control device reaches the relevant requirement, and finishing the initial defect applying.
Optionally, after the initial defect application is completed, the remote controller is used for controlling the hydraulic module to enable the pressure head to be lifted to the initial position, the electric switch and the oil inlet control switch are turned off, the clamp is loosened, and after the clamp is loosened, the submarine pipeline on which the initial defect application is completed is taken out by using the hoisting equipment.
The method for applying the initial defect of the submarine pipeline, provided by the invention, is applied to a device for applying the initial defect of the submarine pipeline, and has the following beneficial effects:
(1) compared with the traditional hydraulic device, the electric control device has higher precision and more convenient operation, and is beneficial to more quickly and better applying the initial defects of the pipeline. The defect applying process is greatly simplified, the safety is enhanced, the requirement on operators is reduced, and the efficiency of applying the initial defects of the submarine pipeline is improved.
(2) The device is small in size, convenient to move and carry, and convenient for a user to operate in different places. In the prior art for applying initial defects to the submarine pipeline, a mechanism with a large extrusion device is required. The submarine pipeline is generally about 10m in length and weighs about 4 tons, and the transportation of the submarine pipeline to a related mechanism is tedious work, and a large amount of manpower and material resources are needed. After the device is used, initial defect applying work can be carried out in an experimental site, and a large amount of manpower and material resources are saved.
(3) The device has excellent applicability and is provided with different pressing heads, and can apply various forms of initial defects. The device has different clamps, and the application of the initial defects of the full scale pipeline and the scaled pipeline can be realized by using different clamps. Besides the submarine pipeline, the initial defect application can be carried out on other components, and the method has good applicability.
Those of skill would further appreciate that the various illustrative components and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied in hardware, a software system executed by a processor, or a combination of the two. The software system may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. An apparatus for imparting an initial flaw to a subsea pipeline, the apparatus comprising: the device comprises a hydraulic module, an electrical control module, a device table body and an additional module;
the hydraulic module is used for applying initial defects to the full-scale submarine pipeline;
the electrical control module is used for controlling the hydraulic module;
the device platform body is used for providing stability in the process of applying initial defects to the full-scale submarine pipeline;
the additional module is used for expanding the applicability of the full-scale submarine pipeline.
2. The apparatus of claim 1, wherein the subsea conduit comprises a full scale subsea conduit or a scaled subsea conduit.
3. The apparatus of claim 2, wherein when the subsea conduit is the scaled-down subsea conduit, the apparatus stage comprises a gasket, an upper plate, a support bar, a lower plate, a support base, a self-locking universal wheel, a slide rail, a crank, a scaled-down subsea conduit clamp;
the gasket is located in the center of the upper surface of the upper base plate, the upper base plate and the lower base plate are fixed through the supporting rods, the lower base plate and the base are fixed through the supporting seat, the self-locking universal wheel is fixed to the lower surface of the base, the sliding rail is arranged on the upper surface of the lower base plate, the scaling-down submarine pipeline clamp is arranged on the sliding rail, and the crank is arranged on the surface of the lower base plate.
4. The apparatus of claim 3, wherein there is a missing corner above the inside of the scaled subsea conduit clamp for securing the scaled subsea conduit.
5. The apparatus of claim 2, wherein when the subsea pipeline is a full scale subsea pipeline, the apparatus stage comprises a gasket, an upper plate, a support bar, a lower plate, a support base, a self-locking universal wheel, a slide rail, a crank, a full scale subsea pipeline clamp;
the gasket is located in the center of the upper surface of the upper base plate, the upper base plate and the lower base plate are fixed through the supporting rods, the lower base plate and the base are fixed through the supporting seat, the self-locking universal wheel is fixed to the lower surface of the base, the sliding rail is arranged on the upper surface of the lower base plate, the full-scale submarine pipeline clamp is arranged on the sliding rail, and the crank is arranged on the surface of the lower base plate.
6. The apparatus of claim 5, wherein the full scale subsea pipeline clamp has a quadrilateral inside with protruding corners on the outside, and the inside of the full scale subsea pipeline clamp is used for fixing the full scale subsea pipeline.
7. The device according to any one of claims 3 or 5, wherein the hydraulic module comprises an oil inlet pipe, a main body, a pressure rod, a pressure head, an electric switch, an oil inlet control switch and a remote controller;
the oil inlet pipe is fixedly connected with the main body, the main body is fixedly connected with the pressure rod, the pressure rod is fixedly connected with the pressure head, the electric switch is arranged on the upper surface of the main body, and the oil inlet control switch is arranged on the lower surface of the main body;
the main body is fixed at the central position of the upper surface of the upper bottom plate through the gasket, the pressure rod penetrates through the central position of the upper surface of the upper bottom plate, and the pressure head is in close contact with the submarine pipeline.
8. The apparatus of claim 7, wherein the ram comprises a cylindrical ram.
9. The apparatus of claim 2, wherein the electrical control module is disposed on the upper surface of the upper plate.
10. The apparatus of claim 1, wherein the additional module comprises a rectangular ram, a regular pentagonal ram, a circular ram, a spherical ram.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010935083.9A CN112113848A (en) | 2020-09-08 | 2020-09-08 | Device is applyed to submarine pipeline initial defect |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010935083.9A CN112113848A (en) | 2020-09-08 | 2020-09-08 | Device is applyed to submarine pipeline initial defect |
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| CN202010935083.9A Pending CN112113848A (en) | 2020-09-08 | 2020-09-08 | Device is applyed to submarine pipeline initial defect |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07229878A (en) * | 1994-02-21 | 1995-08-29 | Ishikawajima Harima Heavy Ind Co Ltd | Formation of stress corrosion crack defect in metal pipe and stress applying device used therein |
| JPH10280044A (en) * | 1997-04-07 | 1998-10-20 | Ishikawajima Harima Heavy Ind Co Ltd | Manufacture of pipe sample with scc |
| CN102879245A (en) * | 2012-09-19 | 2013-01-16 | 宝钢发展有限公司 | Device for defect processing of ultrasonic flaw detection sample tube inner walls |
| CN103394902A (en) * | 2013-08-14 | 2013-11-20 | 徐州徐工液压件有限公司 | Movable hydraulic press fitting device |
| CN204255713U (en) * | 2014-10-30 | 2015-04-08 | 中国石油天然气股份有限公司 | Pipeline pit defect manufacturing device |
| CN207133137U (en) * | 2017-08-23 | 2018-03-23 | 中国汽车技术研究中心 | Power battery pack extrusion test device for electric automobile |
| CN108489699A (en) * | 2018-04-16 | 2018-09-04 | 天津大学 | A kind of submarine pipeline junk shock simulation experiment system |
| CN111122266A (en) * | 2019-12-19 | 2020-05-08 | 西北工业大学 | Device for generating specific local geometric initial defects on outer surface of pipeline |
-
2020
- 2020-09-08 CN CN202010935083.9A patent/CN112113848A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07229878A (en) * | 1994-02-21 | 1995-08-29 | Ishikawajima Harima Heavy Ind Co Ltd | Formation of stress corrosion crack defect in metal pipe and stress applying device used therein |
| JPH10280044A (en) * | 1997-04-07 | 1998-10-20 | Ishikawajima Harima Heavy Ind Co Ltd | Manufacture of pipe sample with scc |
| CN102879245A (en) * | 2012-09-19 | 2013-01-16 | 宝钢发展有限公司 | Device for defect processing of ultrasonic flaw detection sample tube inner walls |
| CN103394902A (en) * | 2013-08-14 | 2013-11-20 | 徐州徐工液压件有限公司 | Movable hydraulic press fitting device |
| CN204255713U (en) * | 2014-10-30 | 2015-04-08 | 中国石油天然气股份有限公司 | Pipeline pit defect manufacturing device |
| CN207133137U (en) * | 2017-08-23 | 2018-03-23 | 中国汽车技术研究中心 | Power battery pack extrusion test device for electric automobile |
| CN108489699A (en) * | 2018-04-16 | 2018-09-04 | 天津大学 | A kind of submarine pipeline junk shock simulation experiment system |
| CN111122266A (en) * | 2019-12-19 | 2020-05-08 | 西北工业大学 | Device for generating specific local geometric initial defects on outer surface of pipeline |
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Application publication date: 20201222 |