CN103674786B - Permeability tester under electric field action - Google Patents
Permeability tester under electric field action Download PDFInfo
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- CN103674786B CN103674786B CN201310685270.6A CN201310685270A CN103674786B CN 103674786 B CN103674786 B CN 103674786B CN 201310685270 A CN201310685270 A CN 201310685270A CN 103674786 B CN103674786 B CN 103674786B
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- electrode
- test specimen
- electric field
- field action
- firm banking
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- 230000005684 electric field Effects 0.000 title claims abstract description 42
- 230000035699 permeability Effects 0.000 title claims abstract description 31
- 230000009471 action Effects 0.000 title claims abstract description 30
- 238000012360 testing method Methods 0.000 claims abstract description 84
- 239000012530 fluid Substances 0.000 claims abstract description 7
- 230000000149 penetrating effect Effects 0.000 claims abstract description 7
- 238000009434 installation Methods 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 8
- 239000011521 glass Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 22
- 239000007788 liquid Substances 0.000 abstract description 14
- 230000008569 process Effects 0.000 abstract description 10
- 230000035515 penetration Effects 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 6
- 238000013461 design Methods 0.000 abstract description 4
- 239000002131 composite material Substances 0.000 description 10
- 239000012212 insulator Substances 0.000 description 9
- 229920001971 elastomer Polymers 0.000 description 8
- 238000011160 research Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229920000260 silastic Polymers 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000004043 dyeing Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 229920005439 Perspex® Polymers 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The present invention proposes a kind of permeability tester under electric field action, comprising: test specimen firm banking, and test specimen firm banking is for supporting test specimen; Holding cylinder, holding cylinder for holding penetrating fluid, the lower end holding cylinder is connected with test specimen firm banking and/or compresses and is supported on test specimen on test specimen firm banking to close the under shed holding cylinder; Cover, cover is used for the upper end that capping holds cylinder; First electrode, the first electrode is positioned at the top of test specimen; Second electrode, the second electrode is positioned at the below of test specimen; High-voltage power supply, high-voltage power supply and the first electrode are connected with the second electrode to apply electric field by the first electrode and the second electrode to test specimen.The present invention effectively can solve in existing liquid penetration test process and cannot apply electric field action and the problem meeting weight method simultaneously, has ingenious, the simple operation and other advantages of design.
Description
Technical field
The invention belongs to high-voltage insulation technique field, be specifically related to a kind of permeability tester under electric field action.
Background technology
The energy resources of China are mainly distributed in central and west regions, and load center is mainly distributed in the southeastern coastal areas, and therefore Large Copacity remote extra-high voltage AC and DC T & D Technology solves China's energy centre and the inconsistent gordian technique of load center.
Composite insulator is as the important component part of overhead transmission line, and in electric, composite insulator will bear the effect of the effect of long-term work voltage and the switching overvoltage of transient state and lightning surge; In mechanical aspects, composite insulator to bear wire deadweight long term mechanical load and the weather condition such as strong wind, icing under other load.In addition, composite insulator also must have good weatherability and ageing-resistant performance, ensure the operation that composite insulator can be reliable and stable under various harsh weather condition, the quality of composite insulator performance is directly connected to the safe and stable operation of electric system.
Very harmful to electric system of the fracture accident of composite insulator, in composite insulator fault analysis, it is the necessary condition that fracture occurs that liquid medium touches composite electric insulator core bar.Therefore, liquid medium permeates silicone rubber jacket touches the process of plug is the key issue that composite insulator research field is paid close attention to.There are some scholars to study for liquid process of osmosis in silastic material at present, mainly employed weight method and optical observation method have studied the Penetration Signature of liquid medium in silastic material.
In penetration study field, conventional weight method is fully immersed in particular liquid by sample to be tested, measures the mass change of sample to be tested by specified time interval with high Accuracy Electronic Balance, is characteristic quantity research process of osmosis according to this.But, by the factor that cannot apply electric field during weight method research, the Penetration Signature without liquid under current field condition can only be obtained.
Optical observation method refers to the liquid using and have dyeability, by sample, Jin Pao or one side of something soak in a liquid completely, take out sample to be tested by specified time interval, dissect sample and observe the length of penetration of dyeing liquid, in this, as characteristic quantity research process of osmosis.But when using optical observation method research, although the effect of electric field can be applied, the liquid with dyeing property can only be used, the Penetration Signature of the colourless liquid such as water, salt solusion in silastic material cannot be obtained, and the test specimen needed for optical observation method is more, program is complicated.
Summary of the invention
The present invention is intended at least to solve one of technical matters existed in prior art.
For this reason, the object of the invention is to propose a kind of permeability tester under electric field action.
To achieve these goals, permeability tester under electric field action according to an embodiment of the invention, comprising: test specimen firm banking, and described test specimen firm banking is for supporting test specimen; Hold cylinder, described in hold cylinder for holding penetrating fluid, described in hold cylinder lower end be connected with described test specimen firm banking and/or compress and be supported on described test specimen on described test specimen firm banking to hold the under shed of cylinder described in closing; Cover, described cover is used for the upper end holding cylinder described in capping; First electrode, described first electrode is positioned at the top of described test specimen; Second electrode, described second electrode is positioned at the below of described test specimen; And high-voltage power supply, described high-voltage power supply and described first electrode are connected with the second electrode to apply electric field by described first electrode and the second electrode to described test specimen.
According to the permeability tester under electric field action of the embodiment of the present invention, effectively can solve in existing liquid penetration test process and cannot apply electric field action and the problem meeting weight method simultaneously, there is ingenious, the simple operation and other advantages of design.
In addition, according to the permeability tester under electric field action of the embodiment of the present invention, also there is following additional technical feature:
In one embodiment of the invention, described first electrode and described second electrode are plane electrode.
In one embodiment of the invention, also comprise: the first electrode pair heart and stationary installation, described first electrode is arranged in the described first electrode pair heart and stationary installation; The second electrode pair heart and stationary installation, described second electrode is arranged in the described second electrode pair heart and stationary installation, and wherein said first electrode and the second electrode are by the described first electrode pair heart and stationary installation and the second electrode pair heart and the alignment of stationary installation center.
In one embodiment of the invention, described second electrode contacts with the test specimen be supported on described test specimen firm banking.
In one embodiment of the invention, described test specimen firm banking has through hole through along the vertical direction, the inwall of described through hole has the annular boss for supporting described test specimen, described in hold cylinder lower end be engaged in described through hole.
In one embodiment of the invention, the lower end threaded engagement holding cylinder described in is in described through hole and compress described test specimen.
In one embodiment of the invention, between described second electrode and described test specimen firm banking, there is clearance.
In one embodiment of the invention, the described first electrode pair heart and stationary installation are arranged on described cover.
In one embodiment of the invention, the material holding cylinder described in is machine glass.
In one embodiment of the invention, described first electrode and the second electrode are Ti electrode.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the schematic diagram of the permeability tester under electric field action of first embodiment of the invention;
Fig. 2 is the schematic diagram of the permeability tester under electric field action of second embodiment of the invention;
Fig. 3 is the schematic diagram carried out in permeability test process of the permeability tester under electric field action of the embodiment of the present invention;
Fig. 4 is schematic diagram when materialsing after the permeability test of the permeability tester under electric field action of the embodiment of the present invention terminates.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
According to the permeability tester under electric field action of the embodiment of one aspect of the invention, as shown in Figure 1, can comprise: test specimen firm banking 1, hold cylinder 2, cover 3, the first electrode 4, second electrode 5 and high-voltage power supply 6.Wherein: test specimen firm banking 1 is for supporting test specimen.Hold cylinder 2 for holding penetrating fluid.The lower end holding cylinder 2 is connected with test specimen firm banking 1 and/or compresses and is supported on test specimen on test specimen firm banking 1 to close the under shed holding cylinder 2.Cover 3 holds the upper end of cylinder 2 for capping.First electrode 4 is positioned at the top of test specimen.Second electrode 5 is positioned at the below of test specimen.High-voltage power supply 6 and the first electrode 4 are connected with the second electrode 5 to apply electric field by the first electrode 4 and the second electrode 5 to test specimen.
According to the permeability tester under electric field action of the embodiment of the present invention, effectively can solve in existing liquid penetration test process and cannot apply electric field action and the problem meeting weight method simultaneously, there is ingenious, the simple operation and other advantages of design.
In one embodiment of the invention, the first electrode 4 and the second electrode 5 are plane electrode.Plane electrode is conducive to forming the electric field that space is larger, be more evenly distributed.Normally adopt circular flat plate electrode.
In one embodiment of the invention, as shown in Figure 2, can also comprise: the first electrode pair heart and stationary installation 7, first electrode 4 are arranged in the first electrode pair heart and stationary installation 7; The second electrode pair heart and stationary installation 8, second electrode 5 are arranged in the second electrode pair heart and stationary installation 8, and wherein the first electrode 4 and the second electrode 5 are by the first electrode pair heart and stationary installation 7 and the second electrode pair heart and the alignment of stationary installation 8 center.The more uniform electric field of distribution can be produced after first electrode 4 and the alignment of the second electrode 5 center.
In one embodiment of the invention, the second electrode 5 contacts with the test specimen be supported on test specimen firm banking 1.Second electrode 5 directly contacts with test specimen, and be conducive to most of electric field line and all pass test specimen, electric field intensively acts on test specimen place.
In one embodiment of the invention, test specimen firm banking 1 has through hole through along the vertical direction, and the inwall of through hole has the annular boss for supporting test specimen, the lower end holding cylinder 2 is engaged in through hole.Test specimen location will can be made test specimen firm banking 1 simultaneously and hold cylinder 2 and limit one and hold chamber by such design effectively.
In one embodiment of the invention, the lower end threaded engagement holding cylinder 2 is in through hole and compress test specimen.Threaded engagement can realize test specimen to be pressed on test specimen firm banking 1 preferably.
In one embodiment of the invention, between the second electrode 5 and test specimen firm banking 1, there is clearance.Can prevent like this in process of the test due to the too high and contingent surface breakdown along sample to be tested surface of electric field intensity.
In one embodiment of the invention, the first electrode pair heart and stationary installation 7 are arranged on cover 3.It should be noted that, the first electrode pair heart and can also to arrange polytetrafluoroethylene sealing gasket circle between stationary installation 7 and cover 3 good to ensure sealing.
In one embodiment of the invention, the material holding cylinder 2 is machine glass.Perspex transparent is visual, is convenient to situation in monitoring cylinder, convenient especially when particularly observing perviousness under electric field action in test specimen of part colored penetrating fluid.
In one embodiment of the invention, the first electrode 4 and the second electrode 5 are Ti electrode.Ti electrode has corrosion-resistant, reliable and stable advantage.
For making those skilled in the art understand the present invention better, the course of work of the permeability tester under electric field action of one embodiment of the invention is described below in conjunction with Fig. 3 and Fig. 4.
First, the rubber test piece that size is mated is placed on the annular boss of the through-hole wall of test specimen firm banking 1.The lower end holding cylinder 2 and test specimen firm banking 1 are connected by screw thread and the edge being pressed in rubber test piece to fix this rubber test piece.Now hold cylinder 2 to define with rubber test piece and hold chamber, inject appropriate penetrating fluid (with in the future can submergence first electrode be as the criterion).
Next, fixed the first electrode 4 by the first electrode and centering device 7 is fixed on cover 3, and carry out close contact by polytetrafluoroethylene sealing gasket circle, with the requirement of satisfied sealing.Then cover 3 is arranged on the upper shed holding cylinder 2.
Again, the second electrode 5 to be fixed by the second electrode and centering device 8 is located and fixedly mounts, the upper surface of the second electrode 5 is contacted with the lower surface of rubber test piece.Ensure that the second electrode 5 does not contact with test specimen firm banking 1 by reserved clearance, effectively avoid the surface breakdown along sample lower surface under high-strength electric field.
Finally, the first electrode 4 is connected with high-voltage power supply 6 with the second electrode 5.
The permeability tester under electric field action installed to carry out in permeability test process as shown in Figure 3.
After permeability test carries out a period of time, need rubber test piece to take out weigh, with reference to figure 4 when materialsing, concrete steps are as follows:
First, disconnect high-voltage power supply, then apparatus main body entirety is inverted.Now penetrating fluid no longer contacts with rubber test piece, but is contained in holding in chamber of holding that cylinder 2 forms with cover 3.
Secondly, test specimen firm banking 1 and the screw thread rotation held between cylinder 2 are turned on, rubber test piece can be taken out and weigh.
Weigh after terminating, if still need to carry out permeability test, continue to repeat above-mentioned steps.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In describing the invention, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary indirect contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.
In the description of this instructions, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, the different embodiment described in this instructions or example can carry out combining and combining by those skilled in the art.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.
Claims (10)
1. a permeability tester under electric field action, is characterized in that, comprising:
Test specimen firm banking, described test specimen firm banking is for supporting test specimen;
Hold cylinder, described in hold cylinder for holding penetrating fluid, described in hold cylinder lower end be connected with described test specimen firm banking and compress and be supported on described test specimen on described test specimen firm banking to hold the under shed of cylinder described in closing;
Cover, described cover is used for the upper end holding cylinder described in capping;
First electrode, described first electrode is positioned at the top of described test specimen;
Second electrode, described second electrode is positioned at the below of described test specimen; And
High-voltage power supply, described high-voltage power supply and described first electrode are connected with the second electrode to apply electric field by described first electrode and the second electrode to described test specimen.
2. permeability tester under electric field action according to claim 1, is characterized in that, described first electrode and described second electrode are plane electrode.
3. permeability tester under electric field action according to claim 1, is characterized in that, also comprises:
The first electrode pair heart and stationary installation, described first electrode is arranged in the described first electrode pair heart and stationary installation;
The second electrode pair heart and stationary installation, described second electrode is arranged in the described second electrode pair heart and stationary installation, and wherein said first electrode and the second electrode are by the described first electrode pair heart and stationary installation and the second electrode pair heart and the alignment of stationary installation center.
4. permeability tester under electric field action according to claim 1, is characterized in that, described second electrode contacts with the test specimen be supported on described test specimen firm banking.
5. the permeability tester under electric field action according to any one of claim 1-4, it is characterized in that, described test specimen firm banking has through hole through along the vertical direction, the inwall of described through hole has the annular boss for supporting described test specimen, described in hold cylinder lower end be engaged in described through hole.
6. permeability tester under electric field action according to claim 5, is characterized in that, described in hold cylinder lower end threaded engagement in described through hole, compress described test specimen.
7. permeability tester under electric field action according to claim 6, is characterized in that, has clearance between described second electrode and described test specimen firm banking.
8. permeability tester under electric field action according to claim 3, is characterized in that, the described first electrode pair heart and stationary installation are arranged on described cover.
9. permeability tester under electric field action according to claim 1, is characterized in that, described in hold cylinder material be machine glass.
10. permeability tester under electric field action according to claim 1, is characterized in that, described first electrode and the second electrode are Ti electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310685270.6A CN103674786B (en) | 2013-12-13 | 2013-12-13 | Permeability tester under electric field action |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310685270.6A CN103674786B (en) | 2013-12-13 | 2013-12-13 | Permeability tester under electric field action |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103674786A CN103674786A (en) | 2014-03-26 |
| CN103674786B true CN103674786B (en) | 2015-10-28 |
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| CN201310685270.6A Expired - Fee Related CN103674786B (en) | 2013-12-13 | 2013-12-13 | Permeability tester under electric field action |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106443374B (en) * | 2016-09-14 | 2019-04-26 | 广东电网有限责任公司电力科学研究院 | Plant oleogel dielectric strength test device and method |
| CN107490539A (en) * | 2017-08-23 | 2017-12-19 | 成都本华清博科技有限公司 | Device and method for measuring moisture permeability of sheet material |
| CN107525731A (en) * | 2017-09-04 | 2017-12-29 | 成都本华清博科技有限公司 | Device and method for measuring water absorption of silicone rubber material under action of electric field |
| CN108562422B (en) * | 2018-05-31 | 2023-12-22 | 吉林大学 | Liquid dynamic characteristic test device under complex environment |
| CN111505057A (en) * | 2020-05-12 | 2020-08-07 | 清华大学 | Solid insulating material resistivity testing device under liquid permeation action |
| CN114371115A (en) * | 2021-12-21 | 2022-04-19 | 中国国检测试控股集团股份有限公司 | Method for measuring penetration depth of permeable liquid hardening agent in cement-based material |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1605852A (en) * | 2004-12-01 | 2005-04-13 | 北京航空航天大学 | Testing method and testing instrument for imbibition characteristic of composite material reinforcement body |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100515853B1 (en) * | 2002-11-19 | 2005-09-21 | 한국과학기술연구원 | Method and equipment for the measurement of diffusion coefficient of nano-particle fluids through hollow-fiber micropores |
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2013
- 2013-12-13 CN CN201310685270.6A patent/CN103674786B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1605852A (en) * | 2004-12-01 | 2005-04-13 | 北京航空航天大学 | Testing method and testing instrument for imbibition characteristic of composite material reinforcement body |
Non-Patent Citations (2)
| Title |
|---|
| "Crack effects on gas and water permeability of concretes";Vincent Picandet et al.;《Cement and Concrete Research》;20091231;第39卷;第537-547页 * |
| "交、直流电压下复合绝缘子和瓷绝缘子的自然积污试验";王彬 等;《高电压技术》;20090930;第35卷(第9期);第2322-2328页 * |
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