CN111257710A - High-current ablation test sample table considering medium influence and test method - Google Patents
High-current ablation test sample table considering medium influence and test method Download PDFInfo
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- CN111257710A CN111257710A CN202010152959.2A CN202010152959A CN111257710A CN 111257710 A CN111257710 A CN 111257710A CN 202010152959 A CN202010152959 A CN 202010152959A CN 111257710 A CN111257710 A CN 111257710A
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- 238000012360 testing method Methods 0.000 title claims abstract description 65
- 238000002679 ablation Methods 0.000 title claims abstract description 33
- 238000010998 test method Methods 0.000 title claims abstract description 12
- 239000002689 soil Substances 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 5
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 5
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 4
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000000007 visual effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 9
- 210000000078 claw Anatomy 0.000 description 7
- 238000004590 computer program Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- -1 acryl Chemical group 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/16—Construction of testing vessels; Electrodes therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0425—Test clips, e.g. for IC's
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The application relates to a consider heavy current ablation test sample platform and test method that medium influences, test platform include container subassembly, clamping subassembly and circular telegram subassembly, the container subassembly includes the inside insulating container who holds by examination article and medium, the clamping subassembly includes with by examination article are fixed folder in the insulating container, the circular telegram subassembly includes power, earthing pole and connects the manual electrode of power, manual electrode including scalable and pivoted set up in the conducting rod body in the insulating container, earthing pole one end ground connection, the other end with the connection can be dismantled to the examination article. According to the large-current ablation test sample table considering the medium influence, a sample can be conveniently fixed on the platform, and meanwhile, the platform can be filled with related conductive media according to the test requirement, so that the real environment of the test is restored to the maximum extent. The test sample table data acquisition is visual and effective, and the efficiency of the work is greatly improved.
Description
Technical Field
The application belongs to the field of high-voltage tests of industrial equipment, and particularly relates to a large-current ablation test sample table considering medium influence and a test method.
Background
Because research institutions in the petroleum industry or the electric power industry often aim at scientific research on power frequency grounding current ablation of power transmission and transformation equipment nearby on concealed engineering facilities such as buried oil and gas pipelines or current ablation after lightning impulse current flows into the ground, power frequency current or lightning impulse current ablation simulation tests need to be carried out on concealed engineering facility slices such as buried oil and gas pipelines. Under the influence of laboratory environment and test equipment, the environment (in soil, sand or seawater) of hidden engineering facilities such as oil and gas pipelines buried in reality cannot be simulated on a large scale, the influence of the middle conductive medium is often ignored during the test, the large current is directly subjected to an ablation test through the air medium, the result is corrected, the discharge characteristic of the current in the real medium cannot be reduced as much as possible, and the test result is often inaccurate and real. In order to conveniently simulate the power frequency current or lightning impulse current ablation test of hidden engineering facilities such as buried oil and gas pipelines in real environments (in soil, sand or seawater), a new test sample table is needed.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the test bench and the test method for the high-current ablation test are accurate and real in consideration of medium influence.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a large-current ablation test sample table considering medium influence comprises a container assembly, a clamping assembly and a power-on assembly, wherein the container assembly comprises an insulating container, a tested object and a medium are contained in the insulating container, the clamping assembly comprises a clamping piece, the tested object is fixed in the insulating container, the power-on assembly comprises a power supply, a grounding electrode and a manual electrode, the manual electrode is connected with the power supply and comprises a conductive rod body which is arranged in the insulating container in a telescopic and rotary mode, one end of the grounding electrode is grounded, and the other end of the grounding electrode is detachably connected with the tested object.
In one embodiment, the insulating container is made of polymethyl methacrylate or a methyl methacrylate material.
In one embodiment, the container is a transparent container.
In one embodiment, the inner side of the side wall of the container is provided with a scale.
In one embodiment, the clamping piece is a rotary screw rod, two ends of the rotary screw rod are respectively provided with a rotary handle and a fixed claw, the rotary screw rod is arranged on the side wall of the insulating container, the fixed claw and the rotary handle are respectively positioned at the inner side and the outer side of the insulating container, and the rotary handle is rotated to enable the fixed claw to fasten or loosen the tested object.
In one embodiment, the manual electrode comprises an insulating handle fixed at one end of the conductive rod body, and the gap and the angle between the conductive rod body and the tested object are changed by pushing, pulling and rotating the insulating handle.
In one embodiment, the medium is soil of different soil resistivity or liquid of different conductivity.
In one embodiment, the medium completely covers the manual electrode and at least partially covers the test article.
In one embodiment, one end of the grounding electrode is grounded, and the other end of the grounding electrode is provided with a clamp detachably connected with the tested object.
A test method for a high current ablation test specimen stage considering medium influence, the test specimen stage comprising a container assembly, a clamping assembly and a power-on assembly, the container assembly comprising an insulating container for accommodating a tested object and a medium therein, the clamping assembly comprising a clamp for fixing the tested object in the insulating container, the power-on assembly comprising a power source, a ground electrode and a manual electrode connected to the power source, the manual electrode comprising a conductive rod which is arranged in the insulating container in a retractable and rotatable manner, one end of the ground electrode being grounded, and the other end of the ground electrode being detachably connected to the tested object, the test method comprising the steps of:
step 20, adjusting the gap and the angle between the conductive rod body and the tested object, and then connecting the conductive rod body with the power supply;
step 30, injecting a medium into the insulating container, and then fixing the grounding electrode on the tested object;
and step 40, starting a high-current burning test.
The invention has the beneficial effects that: according to the high-current ablation test sample table and the test method considering the medium influence, a sample can be conveniently fixed on the platform, and meanwhile, the platform can be filled with related conductive media according to the test requirement, so that the real environment of the test is restored to the maximum extent. The test specimen table is simple to operate, convenient and reliable, data acquisition is visual and effective, the efficiency of the work is greatly improved, and the test specimen table is high in popularization.
Drawings
The technical solution of the present application is further explained below with reference to the drawings and the embodiments.
FIG. 1 is a schematic structural diagram of a large current ablation test specimen stage considering medium influence according to an embodiment of the present application.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the scope of the present application. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art through specific situations.
The technical solutions of the present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
A large-current ablation test sample table considering medium influence is disclosed, as shown in fig. 1, and comprises a container assembly, a clamping assembly and an electrifying assembly, wherein the container assembly comprises an insulating container 1 for accommodating a tested product and a medium, the clamping assembly comprises a clamping piece 2 for fixing the tested product in the insulating container 1, the electrifying assembly comprises a power supply 3, a grounding electrode 4 and a manual electrode 5 connected with the power supply 3, the manual electrode 5 comprises a conductive rod body which can be extended and rotated and is arranged in the insulating container 1, one end of the grounding electrode 4 is grounded, and the other end of the grounding electrode is detachably connected with the tested product. The insulating container 1 is utilized to simulate a medium environment, then a large current is applied in the medium environment, the buried metal pipeline in the real medium environment of large current ablation is repeatedly etched, and the characteristics of a large current ablation test can be researched by adjusting the gap distance between an electrode and a test sample, the angle between the electrode and the test sample, media with different characteristics and other conditions.
In one of the embodiments, the insulating container 1 is made of polymethylmethacrylate (organic glass) or polymethylmethacrylate (acryl) material. The transparent insulating container 1 should have excellent insulating and corrosion-proof properties, and thus the insulating material is polymethyl methacrylate or methyl methacrylate.
In one embodiment, the insulating container 1 is a rectangular parallelepiped or cubic container.
In one embodiment, the container is a transparent container, and the transparent container is used for better observing the gap size condition of the manual electrode 5 from the tested object. In one embodiment, the inside of the side wall of the container is provided with a scale 6, wherein the inside of the side wall of the transparent insulating container 1 facing the staff can be provided with the scale 6 in millimeter level. The scale 6 is arranged on the inner side of the container, so that if the scale 6 is arranged on the outer side, the gap distance actually has an error corresponding to the scale 6 due to the refraction and reflection of light by the transparent body.
In one embodiment, the clamping member 2 is a rotary screw 9 with a rotary handle 7 and a fixed claw 8 respectively arranged at two ends, the rotary screw 9 is arranged on the side wall of the insulating container 1, the fixed claw 8 and the rotary handle 7 are respectively arranged at the inner side and the outer side of the insulating container 1, and the rotary handle 7 is rotated to fasten or loosen the fixed claw 8 on the tested object. The fixed claw 8 is convenient for fixing the section to be cut by the test tube. When the slice to be tested is measured, a worker can rotate the rotating screw 9 by holding the rotating handle 7, so that the purpose of fastening or loosening the tested object is achieved.
In order to facilitate the fixing of the metal pipe section of the tested object, in one embodiment, the clamping members 2 are provided in a pair and are respectively arranged on a pair of opposite side walls of the insulating container 1.
The staff can adjust manual electrode 5 and control the clearance distance between electrode and the sample, the angle between electrode and the sample. In one embodiment, the manual electrode 5 comprises an insulating handle 10 fixed at one end of the conductive rod, and the gap and the angle between the conductive rod and the tested object are changed by pushing, pulling and rotating the insulating handle 10.
In one embodiment, the medium is a soil of different soil resistivity or a liquid of different conductivity. In one embodiment, the medium completely covers the manual electrode 5 and at least partially covers the test article.
In one embodiment, one end of the grounding electrode 4 is grounded, and the other end is provided with a clamp detachably connected with the tested object.
The invention also discloses a test method of a large-current ablation test sample table considering medium influence, the test sample table comprises a container assembly, a clamping assembly and an electrifying assembly, the container assembly comprises an insulating container 1 for accommodating a tested product and a medium, the clamping assembly comprises a clamping piece 2 for fixing the tested product in the insulating container, the electrifying assembly comprises a power supply 3, a grounding electrode 4 and a manual electrode 5 connected with the power supply, the manual electrode 5 comprises a conductive rod body which can stretch and rotate and is arranged in the insulating container 1, one end of the grounding electrode 4 is grounded, the other end of the grounding electrode is detachably connected with the tested product, and the test method comprises the following steps:
step 20, adjusting the gap and angle between the conductive rod body and the tested object, and then connecting the conductive rod body with the power supply 3;
step 30, injecting a medium into the insulating container 1, and then fixing the grounding electrode 4 on the tested object;
and step 40, starting a high-current burning test.
The working process of the high-current ablation test sample table considering the medium influence in the invention is described by way of example, if the high-current ablation test considering the medium influence is performed on a metal pipeline slice. The method comprises the following specific steps:
(1) the test sample table (the insulating container 1) is placed on a workbench with good level, one side with scales 6 faces to a worker, the worker holds the rotary handle 7 of the clamp 2 to rotate the rotary screw 9, and the tested metal pipeline slice is fixed inside the insulating container 1. The worker then adjusts the manual electrode 5 to control the gap distance between the electrode and the test piece and the angle between the electrode and the test piece. After the position and the angle of the manual electrode 5 are set, the worker connects the manual electrode 5 with the power supply 3 (a large current generator).
(2) The insulating container 1 is filled with a suitable amount of medium (e.g. soil of different soil resistivity, liquids of different conductivity). The medium should cover most of the specimen and the entirety of the manual electrode 5. After the medium injection is completed, the worker fixes the grounding electrode 4 to the specimen by a clamp.
(3) A high current ablation test was started taking into account the effects of the medium.
The invention has the beneficial effects that: according to the large-current ablation test sample table considering the medium influence, a sample can be conveniently fixed on the platform, and meanwhile, the platform can be filled with related conductive media according to the test requirement, so that the real environment of the test is restored to the maximum extent. The test specimen table is simple to operate, convenient and reliable, data acquisition is visual and effective, the efficiency of the work is greatly improved, and the test specimen table is high in popularization.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.
Claims (10)
1. The large-current ablation test sample table considering the medium influence is characterized by comprising a container assembly, a clamping assembly and a power-on assembly, wherein the container assembly comprises an insulating container for accommodating a tested product and a medium inside, the clamping assembly comprises a clamping piece for fixing the tested product in the insulating container, the power-on assembly comprises a power supply, a grounding electrode and a manual electrode connected with the power supply, the manual electrode comprises a conductive rod body which is arranged in the insulating container in a telescopic and rotatable mode, one end of the grounding electrode is grounded, and the other end of the grounding electrode is detachably connected with the tested product.
2. A high current ablation test bench considering media effects as in claim 1 wherein said insulating container is made of polymethylmethacrylate or methylmethacrylate material.
3. A high current ablation test sample station taking into account media effects as in claim 1, wherein said container is a transparent container.
4. A high current ablation test specimen station in consideration of media effects as in claim 3 wherein said container sidewall is graduated on the inside.
5. A high current ablation test sample table considering medium influence according to claim 1, wherein said clamping member is a rotary screw rod having a rotary handle and a fixed jaw at both ends thereof, said rotary screw rod is disposed on a side wall of said insulating container, said fixed jaw and said rotary handle are respectively disposed on an inner side and an outer side of said insulating container, and rotating said rotary handle fastens or loosens said fixed jaw to or from said sample.
6. A high current ablation test specimen stage according to claim 1 in which said manual electrode includes an insulated handle fixed to one end of said conductive rod, and pushing and pulling and rotating said insulated handle causes the gap and angle between said conductive rod and said specimen to be varied.
7. The high current ablation test bench of claim 1, wherein the medium is soil of different soil resistivity or liquid of different conductivity.
8. A high current ablation test specimen stage in which media effects are accounted for in claim 7 wherein said media completely covers the hand electrode and at least partially covers the specimen.
9. A high current ablation test specimen stage in accordance with claim 1 in which said ground electrode is grounded at one end and has a clamp at the other end for removable attachment to said specimen.
10. A test method for a large-current ablation test sample table considering medium influence is characterized in that the test sample table comprises a container assembly, a clamping assembly and a power-on assembly, the container assembly comprises an insulating container accommodating a tested product and a medium inside, the clamping assembly comprises a clamp fixing the tested product in the insulating container, the power-on assembly comprises a power supply, a grounding electrode and a manual electrode connected with the power supply, the manual electrode comprises a conductive rod body which is arranged in the insulating container in a telescopic and rotatable mode, one end of the grounding electrode is grounded, and the other end of the grounding electrode is detachably connected with the tested product, and the test method comprises the following steps:
step 10, placing the test sample table on a horizontal working table, and fixing the tested sample in the insulating container;
step 20, adjusting the gap and the angle between the conductive rod body and the tested object, and then connecting the conductive rod body with the power supply;
step 30, injecting a medium into the insulating container, and then fixing the grounding electrode on the tested object;
and step 40, starting a high-current burning test.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010152959.2A CN111257710B (en) | 2020-03-06 | 2020-03-06 | High-current ablation test sample table considering medium influence and test method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113281451A (en) * | 2021-04-29 | 2021-08-20 | 国网浙江省电力有限公司绍兴供电公司 | Buried metal energy transmission pipeline slicing test device |
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| KR20020094236A (en) * | 2001-06-04 | 2002-12-18 | 한국전기안전공사 | pulse generator for insulation breakdown test |
| CN101957423A (en) * | 2010-09-16 | 2011-01-26 | 中国电力科学研究院 | Device for testing insulating property of high-voltage oiled paper |
| CN107807146A (en) * | 2017-12-06 | 2018-03-16 | 广东大鹏液化天然气有限公司 | The simulated test special purpose device and test method of a kind of thunder-strike current ablation pipeline |
| CN212675086U (en) * | 2020-03-06 | 2021-03-09 | 国网河南省电力公司电力科学研究院 | Large-current ablation test sample table considering medium influence |
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2020
- 2020-03-06 CN CN202010152959.2A patent/CN111257710B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020094236A (en) * | 2001-06-04 | 2002-12-18 | 한국전기안전공사 | pulse generator for insulation breakdown test |
| CN101957423A (en) * | 2010-09-16 | 2011-01-26 | 中国电力科学研究院 | Device for testing insulating property of high-voltage oiled paper |
| CN107807146A (en) * | 2017-12-06 | 2018-03-16 | 广东大鹏液化天然气有限公司 | The simulated test special purpose device and test method of a kind of thunder-strike current ablation pipeline |
| CN212675086U (en) * | 2020-03-06 | 2021-03-09 | 国网河南省电力公司电力科学研究院 | Large-current ablation test sample table considering medium influence |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113281451A (en) * | 2021-04-29 | 2021-08-20 | 国网浙江省电力有限公司绍兴供电公司 | Buried metal energy transmission pipeline slicing test device |
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