CN103674786A - Permeability tester under electric field action - Google Patents
Permeability tester under electric field action Download PDFInfo
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- CN103674786A CN103674786A CN201310685270.6A CN201310685270A CN103674786A CN 103674786 A CN103674786 A CN 103674786A CN 201310685270 A CN201310685270 A CN 201310685270A CN 103674786 A CN103674786 A CN 103674786A
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Abstract
本发明提出一种电场作用下渗透性试验装置，包括:试件固定底座，试件固定底座用于支撑试件；盛放筒，盛放筒用于盛放渗透液，盛放筒的下端与试件固定底座相连和/或压紧支撑在试件固定底座上的试件以封闭盛放筒的下开口；筒盖，筒盖用于封盖盛放筒的上端；第一电极，第一电极位于试件的上方；第二电极，第二电极位于试件的下方；高压电源，高压电源与第一电极和第二电极相连以便通过第一电极和第二电极向试件施加电场。本发明能够有效地解决已有液体渗透试验过程中无法同时施加电场作用并满足称重法的问题，具有设计巧妙、操作简单等优点。
The present invention proposes a permeability test device under the action of an electric field, comprising: a test piece fixing base, the test piece fixing base is used to support the test piece; The specimen fixing base is connected and/or the specimen supported on the specimen fixing base is pressed to close the lower opening of the holding cylinder; the cylinder cover is used to cover the upper end of the holding cylinder; the first electrode, the first The electrode is located above the test piece; the second electrode is located below the test piece; the high voltage power supply is connected to the first electrode and the second electrode so as to apply an electric field to the test piece through the first electrode and the second electrode. The invention can effectively solve the problem that the electric field cannot be applied simultaneously and meet the weighing method in the existing liquid penetration test process, and has the advantages of ingenious design, simple operation and the like.
Description
Technical field
The invention belongs to high-voltage insulation technique field, be specifically related to permeability test device under a kind of 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 the therefore large remote extra-high voltage AC and DC of capacity T & D Technology is to solve 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 aspect 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 will bear other load under the weather conditions such as the long-term mechanical load of wire deadweight and strong wind, icing.In addition, composite insulator also must have good weatherability and ageing-resistant performance, guarantee the operation that composite insulator can be reliable and stable under various harsh weather conditions, the quality of composite insulator performance is directly connected to the safe and stable operation of electric system.
The fracture accident of composite insulator is very harmful to electric system, and in composite insulator fault analysis, it is the necessary condition that fracture occurs that liquid medium touches composite electric insulator core bar.Therefore the process that, liquid medium touches plug through silicone rubber jacket is the key issue that composite insulator research field is paid close attention to.There have been at present some scholars to study for liquid process of osmosis in silastic material, mainly used weight method and optical observation method to study the Penetration Signature of liquid medium in silastic material.
In penetration study field, conventional weight method is that sample to be tested is fully immersed in particular liquid, 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, during with weight method research, cannot apply the factor of electric field, can only obtain the Penetration Signature without liquid under current field condition.
Optical observation method refers to uses the liquid with dyeability, by sample soak completely or one side of something be immersed in liquid, press specified time interval and take out sample to be tested, the length of penetration of dissecting sample and observing dyeing liquid, usings that this studies process of osmosis as characteristic quantity.But while using the research of optical observation method, although can apply the effect of electric field, can only use the liquid with dyeing property, cannot obtain the Penetration Signatures of colourless liquid in silastic material such as water, salt solusion, and the required test specimen of optical observation method is more, program is complicated.
Summary of the invention
The present invention is intended at least solve one of technical matters existing in prior art.
For this reason, the object of the invention is to propose permeability test device under a kind of electric field action.
To achieve these goals, permeability test device under electric field action according to an embodiment of the invention, comprising: test specimen firm banking, and described test specimen firm banking is used 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 the described test specimen that is supported on a described test specimen firm banking under shed to hold described in sealing tin; Cover, described cover is for holding the upper end of cylinder described in capping; The first electrode, described the first electrode is positioned at the top of described test specimen; The second electrode, described the second electrode is positioned at the below of described test specimen; And high-voltage power supply, described high-voltage power supply is connected with the second electrode to apply electric field by described the first electrode and the second electrode to described test specimen with described the first electrode.
According to permeability test device under the electric field action of the embodiment of the present invention, can effectively solve the problem that cannot apply electric field action in existing liquid penetration test process simultaneously and meet weight method, there is ingenious, the simple operation and other advantages of design.
In addition, according to permeability test device under the electric field action of the embodiment of the present invention, also there is following additional technical feature:
In one embodiment of the invention, described the first electrode and described the second electrode are plane electrode.
In one embodiment of the invention, also comprise: the first electrode pair heart and stationary installation, described the first electrode is arranged in the described first electrode pair heart and stationary installation; The the second electrode pair heart and stationary installation, described the second electrode is arranged in the described second electrode pair heart and stationary installation, and wherein said the first electrode and the second electrode are by the described first electrode pair heart and stationary installation and the second electrode pair heart and stationary installation center-aligned.
In one embodiment of the invention, described the second electrode contacts with the test specimen being supported on described test specimen firm banking.
In one embodiment of the invention, described test specimen firm banking has along the vertical direction the through hole connecting, on the inwall of described through hole, have for supporting the annular boss of 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 that holds cylinder described in is in described through hole and compress described test specimen.
In one embodiment of the invention, between described the 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 that holds cylinder described in is machine glass.
In one embodiment of the invention, described the first electrode and the second electrode are titanium electrode.
Additional aspect of the present invention and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage accompanying drawing below combination obviously and is easily understood becoming the description of embodiment, wherein:
Fig. 1 is the schematic diagram of permeability test device under the electric field action of first embodiment of the invention;
Fig. 2 is the schematic diagram of permeability test device under the electric field action of second embodiment of the invention;
Fig. 3 be under the electric field action of the embodiment of the present invention permeability test device carry out the schematic diagram in permeability test process;
Fig. 4 is the schematic diagram when permeability test of permeability test device is materialsed after finishing under the electric field action of the embodiment of the present invention.
Embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Below by the embodiment being described with reference to the drawings, be exemplary, be intended to for explaining the present invention, and can not be interpreted as limitation of the present invention.
According to permeability test device under the electric field action of the embodiment of one aspect of the invention, as shown in Figure 1, can comprise: test specimen firm banking 1, holds cylinder 2, cover 3, the first electrode 4, the second electrodes 5 and high-voltage power supplies 6.Wherein: test specimen firm banking 1 is for supporting test specimen.Hold cylinder 2 for holding penetrating fluid.The lower end that holds cylinder 2 is connected with test specimen firm banking 1 and/or compresses the test specimen being supported on test specimen firm banking 1 and with sealing, holds the under shed of cylinder 2.Cover 3 holds the upper end of cylinder 2 for capping.The first electrode 4 is positioned at the top of test specimen.The second electrode 5 is positioned at the below of test specimen.High-voltage power supply 6 is connected with the second electrode 5 to apply electric field by the first electrode 4 and the second electrode 5 to test specimen with the first electrode 4.
According to permeability test device under the electric field action of the embodiment of the present invention, can effectively solve the problem that cannot apply electric field action in existing liquid penetration test process simultaneously and meet weight method, 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 form 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, the first electrodes 4 are arranged in the first electrode pair heart and stationary installation 7; The second electrode pair heart and stationary installation 8, the second electrodes 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 stationary installation 8 center-aligned.After the first electrode 4 and the second electrode 5 center-aligned, can produce the electric field more uniformly that distributes.
In one embodiment of the invention, the second electrode 5 contacts with the test specimen being supported on test specimen firm banking 1.The second electrode 5 directly contacts with test specimen, is conducive to most of electric field lines and all passes test specimen, and electric field intensively acts on test specimen place.
In one embodiment of the invention, test specimen firm banking 1 has the through hole connecting along the vertical direction, has for supporting the annular boss of test specimen on the inwall of through hole, and the lower end that holds cylinder 2 is engaged in through hole.Design can be effectively will make test specimen firm banking 1 by test specimen location simultaneously and hold cylinder 2 to limit one and hold chamber like this.
In one embodiment of the invention, hold cylinder 2 lower end threaded engagement in through hole and compress test specimen.Threaded engagement can realize preferably test specimen is pressed on test specimen firm banking 1.
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, polytetrafluoroethylene sealing gasket circle can also be set good to guarantee sealing between the first electrode pair heart and stationary installation 7 and cover 3.
In one embodiment of the invention, holding cylinder 2 material is machine glass.Organic glass transparent visual, is convenient to a situation in monitoring cylinder, particularly observes the colored penetrating fluid of part convenient especially during the perviousness in test specimen under electric field action.
In one embodiment of the invention, the first electrode 4 and the second electrode 5 are titanium electrode.Titanium electrode has corrosion-resistant, reliable and stable advantage.
For making those skilled in the art understand better the present invention, the course of work of permeability test device under the electric field action of one embodiment of the invention is described below in conjunction with Fig. 3 and Fig. 4.
First, the rubber test specimen of size coupling is placed on the annular boss of through-hole wall of test specimen firm banking 1.The edge that the lower end that holds cylinder 2 is connected by screw thread with test specimen firm banking 1 and is pressed in rubber test specimen is to fix this rubber test specimen.Now hold cylinder 2 and formed and hold chamber with rubber test specimen, inject appropriate penetrating fluid (in the future can submergence the first electrode to be as the criterion).
Next, fix 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, to meet the requirement of sealing.Then cover 3 is arranged on to the upper shed that holds cylinder 2.
Again, the second electrode 5 is fixed by the second electrode and centering device 8 is located and fixedly mounted, the upper surface of the second electrode 5 is contacted with the lower surface of rubber test specimen.By reserved clearance, guarantee that the second electrode 5 does not contact with test specimen firm banking 1, has effectively avoided 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.
Under the electric field action installing, permeability test device carries out in permeability test process as shown in Figure 3.
After permeability test carries out a period of time, need rubber test specimen to take out and weigh, while materialsing, with reference to figure 4, concrete steps are as follows:
First, disconnect high-voltage power supply, then by the whole inversion of apparatus main body.Now penetrating fluid no longer contacts with rubber test specimen, but be contained in, holds cylinder 2 and holding in chamber that cover 3 forms.
Secondly, test specimen firm banking 1 and the screw thread rotation that holds 2, cylinder are turned on, the taking-up of rubber test specimen can be weighed.
Weigh after end, if still need to carry out permeability test, continue to repeat above-mentioned steps.
In description of the invention, it will be appreciated that, term " " center ", " longitudinally ", " laterally ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axially ", " radially ", orientation or the position relationship of indications such as " circumferentially " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as limitation of the present invention.
In addition, term " first ", " second " be only for describing object, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characterictic.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the invention, the implication of " a plurality of " is two or more, unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the terms such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or be integral; Can be mechanical connection, can be to be also electrically connected to; Can be to be directly connected, also can indirectly 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, can understand as the case may be above-mentioned term concrete meaning in the present invention.
In the present invention, unless otherwise clearly defined and limited, First Characteristic Second Characteristic " 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, First Characteristic Second Characteristic " on ", " top " and " above " but First Characteristic directly over Second Characteristic or oblique upper, or only represent that First Characteristic level height is higher than Second Characteristic.First Characteristic Second Characteristic " under ", " below " and " below " can be First Characteristic under Second Characteristic or tiltedly, or only represent that First Characteristic level height is less than Second Characteristic.
In the description of this instructions, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, to the schematic statement of above-mentioned term not must for be identical embodiment or example.And, the specific features of description, structure, material or feature can one or more embodiment in office or example in suitable mode combination.In addition, those skilled in the art can carry out combination and combination by the different embodiment that describe in this instructions or example.
Although illustrated and described 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, modification, replacement and modification.
Claims (10)
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| CN201310685270.6A CN103674786B (en) | 2013-12-13 | 2013-12-13 | Permeability tester under electric field action |
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| CN201310685270.6A CN103674786B (en) | 2013-12-13 | 2013-12-13 | Permeability tester under electric field action |
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| CN103674786B CN103674786B (en) | 2015-10-28 |
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Cited By (6)
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| CN106443374A (en) * | 2016-09-14 | 2017-02-22 | 广东电网有限责任公司电力科学研究院 | Vegetable oil gel dielectric strength testing 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 |
| CN108562422A (en) * | 2018-05-31 | 2018-09-21 | 吉林大学 | Hydrodynamics characteristic test apparatus 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 penetrating liquid hardeners in cement-based materials |
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| US20040093934A1 (en) * | 2002-11-19 | 2004-05-20 | Myung-Suk Chun | Device and method for measuring a diffusion coefficient of nano-particle fluid through hollow-fiber micropores |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106443374A (en) * | 2016-09-14 | 2017-02-22 | 广东电网有限责任公司电力科学研究院 | Vegetable oil gel dielectric strength testing 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 |
| CN108562422A (en) * | 2018-05-31 | 2018-09-21 | 吉林大学 | Hydrodynamics characteristic test apparatus under complex environment |
| 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 penetrating liquid hardeners in cement-based materials |
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