CN103344888A - Detecting device - Google Patents
Detecting device Download PDFInfo
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- CN103344888A CN103344888A CN2013102424738A CN201310242473A CN103344888A CN 103344888 A CN103344888 A CN 103344888A CN 2013102424738 A CN2013102424738 A CN 2013102424738A CN 201310242473 A CN201310242473 A CN 201310242473A CN 103344888 A CN103344888 A CN 103344888A
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Abstract
The invention discloses a detecting device which comprises an electric appliance assembly and a detecting assembly. The detecting device is characterized in that the detecting assembly comprises a fixed plate 4 and a moving plate 5 which are vertically arranged on a support 6 and transversely placed side by side, holes are formed in the fixed plate 4 and the moving plate 5 in the same horizontal direction respectively and used for placing an electrode system 1, annular limit parts 9 are arranged on the upper ends of the adjacent ends of the fixed plate 4 and the moving plate 5, a stretching part 7 is arranged between an upper transverse plate and a lower transverse plate, in the horizontal direction, of the support 6, and a fixed electrode 2 and a moving electrode 3 of the electrode system 1 are connected to the electric appliance assembly and the ground respectively. The detecting device is simple in structure, convenient to install, low in manufacturing cost and capable of being widely used in academic institutions and industrial inspection departments.
Description
Technical field
The present invention relates to a kind of pick-up unit, be specifically related to a kind of pick-up unit for dielectric strength under the test for low temperature environment film-type insulating material extended state.
Background technology
Along with the development of superconductor and superconductor technology, superconductor constantly enlarges in the application of concerned power, the development of superconduct construction equipment, produces industrialization day by day.The needs of electrician manufacturing sector and operation power department are not only in the test of the insulating property of insulating material, also are the needs of relevant therewith R﹠D institution and institution of higher learning.To test absorptance and two kinds of insulation of polarization index index for the bigger electrical equipment of capacity.Insulating material for testing laboratory or produced on-site is then tested with Insulation Resistance Tester.Though existing Insulation Resistance Tester includes high precision micro current system, digital booster system, its insulation resistance value reticule is even, clear, simple to operation, easy to carry, is applicable to maintenance, maintenance, test and the calibrating of each electrical equipment.But existing Insulation Resistance Tester can not satisfy the requirement of superconductor and superconductor technology development.For example need in the superconducting power device to use a large amount of insulating material, these materials are operated in again in the environment of low temperature mostly, and therefore, the insulating property of insulating material in low temperature environment will greatly influence the device reliability of operation.In order to develop superconducting apparatus, must insulating material and the electric property thereof of research as being suitable under the low temperature environment.
Insulating material commonly used in the low temperature environment has epoxy resin goods, low-density polyethylene film, glass fiber reinforced plastics, teflon, polypropylene layer platen, polyimide and cable paper etc., wherein back 5 kinds of insulating material are film-types, and general low temperature thin film type insulating material is polytetrafluoroethylene (PTFE), Kapton (PI), polypropylene layer platen (PPLP).Wrapped type insulation system all is widely used in conventional electric power equipment and superconducting power apparatus, and the film-type insulating material of wrapped type insulation system will bear certain wrapped tension force, is in extended state.The inventor through long-term observation, discover that the research for low-temperature insulation material electric property generally concentrates on dielectric dissipation factor, dielectric strength and shelf depreciation etc. at present, be badly in need of the insulating property of the film-type insulating material under the extended state are studied.
In view of the foregoing, the purpose of this invention is to provide a kind of device that detects at the dielectric strength under the film-type insulating material extended state in the low temperature environment.
Summary of the invention
For achieving the above object, the present invention adopts following technical scheme:
A kind of pick-up unit, described pick-up unit comprises: electric appliance component and detection components is characterized in that: described detection components comprises and being vertically set on the support 6 and horizontal fixed head 4 and movable plate 5 placed side by side; Be respectively equipped with the hole of placing electrode system 1 on the same horizontal direction of described fixed head 4 and movable plate 5; The upper end of described fixed head 4 and movable plate 5 abutting ends is provided with annular stop part 9; Be provided with tensioning member 7 between the last lower cross plate of described support 6 horizontal directions; The fixed electorde 2 of described electrode system 1 is connected described electric appliance component and ground connection respectively with moving electrode 3.
Wherein, electric appliance component comprises that former edge joint high pressure, secondary connect the power frequency experimental transformer of DC experiment module; And be connected in voltage divider between described direct current experiment module and the described detection components.
Wherein, the direct current experiment module comprise anode connect protective resistance, negative electrode connect transformer silicon stack, and be arranged on filter capacitor between described protective resistance and the described silicon stack.
Wherein, can 3-5 to be set right for fixed electorde 2 and traveling electrode 3.
Wherein, fixed electorde 2 and traveling electrode 3 are cylindrical; Wherein said fixed electorde 2 one ends have screw thread, fix it on described fixed head 4 by nut 11.
Wherein, traveling electrode 3 places in the movable plate 5, and its length needs the width greater than movable plate 5.
Wherein, fixed head 4 and mobile edition 5 are rectangular thin plate, and its side is provided with equidistant 3-5 through hole.
Wherein, be provided with insulating sleeve in the movable plate 5, be wrapped in traveling electrode 3 outward.
Wherein, fixed head 4 is riveted on described support 6 upper cross plates.
Wherein, support 6 is the rectangular parallelepiped frameworks that are made of 4 thin plates.
Wherein, proving installation is immersed in device and is immersed in the test fluid; Described test fluid comprises liquid nitrogen.
Wherein, the electrode material selected for use of fixed electorde 2 and traveling electrode 3 comprises: red copper, bronze, aluminium.
Wherein, fixed head 4, movable plate 5 and support 6 adopt the insulating material that is fit to liquid nitrogen environment, comprising: epoxy resin, teflon.
The dielectric strength proving installation of a kind of insulating material that the present invention relates to has the following advantages:
1, this proving installation has manyly to electrode, in the experimentation, can record five groups of data successively, and removed from and done one group of trouble of frequently changing test product at every turn, easy operating, realization, convenient and time-saving.
2, hang tensioning member in the product to be tested lower end and make film test product to be measured bear drawing stress, be in extended state, simple to operate, reliable.
3, this apparatus structure is simple, and is easy for installation, and cost is not high, can be widely used in research institutions, industrial detection department.
4, it is accurate that this device obtains the result of dielectric strength of insulating material, and the gained experimental result has very high reference value.
5, this proving installation is the device that designs at membraneous material extended state dielectric strength test in the low temperature environment, but the dielectric strength test of extended state when being equally applicable to membraneous material and impregnated in other liquid environments.Usable range is extensive, and is workable.
Description of drawings
The invention will be further described below with reference to accompanying drawing:
Fig. 1 is dielectric strength proving installation synoptic diagram
Among the figure: 1-electrode system, 2-stiff end, 3-traveling electrode, 4-fixed head, 5-movable plate, 6-support, 7-tensioning member 8-test test product 9-annular stop part 10-insulating sleeve 11-nut
Fig. 2 is dielectric strength proving installation circuit interconnect pattern
Embodiment
As shown in Figure 1, the dielectric strength proving installation of a kind of insulating material of the present invention is made of following several parts:
1-electrode system, 2-stiff end, 3-traveling electrode, 4-fixed head, 5-movable plate, 6-support, 7-tensioning member 8-test test product 9-annular stop part 10-insulating sleeve 11-nut
Wherein, 3-5 fixed electorde equidistantly is embedded in the fixed head 4, and the 3-5 corresponding with it traveling electrode 3 equidistantly is embedded in the movable plate 5.
The test test product is clipped between fixed head 4 and the movable plate 5, wherein, has annular stop part 9 to be installed in test test product upper end, to prevent that testing test product comes off in experiment.According to the difference of film test product thickness, can regulate traveling electrode 3 and change electrode separation, fixed head 4 and movable plate 5 support film test products just are stuck between the electrode its test product.Be provided with insulating sleeve in the movable plate 5 in addition, be wrapped in traveling electrode 3 outward, prevent traveling electrode 3 slips.
Fixed head 4 and movable plate 5 are rectangular thin plate, and its side is drilled with 3-5 equidistantly through hole, to place fixed electorde 2 or traveling electrode 3.And to guarantee that through hole on the fixed head 4 is relative in twos with through hole on the mobile edition 5.
Wherein, fixed head 4 is fixed on the support 6 in the riveted joint mode.
Fixed electorde 2 and traveling electrode 3 are cylindrical; Wherein fixed electorde 2 one ends have screw thread, and the other end then is the cylinder electrode shape, fix it on fixed head 4 by nut.The length of traveling electrode 3 needs the width greater than mobile edition 5; Fixed electorde 2 length equate that with fixed head 4 width fixed head 4 has 3-5 notch to install and fix electrode 2.
Described tensioning member 7 is cylindrical, in order to measure the dielectric strength of insulating material under the specified pull forces, needs to become with the lathe car tensioning member of some different qualities, and the tensioning member material is metal materials such as steel, iron.According to m=ρ v, v=π r
2H can calculate the tensioning member quality, tapping and punching on tensioning member 7, and the weight by the tensioning member 8 that adds up obtains bigger tension force.
During use, the electrode scrub, film test product lower end has hung tensioning member 7 by cutting ferrule with alcohol, passes from epoxy support 6 lower ends, and the upper end is stuck in the draw-in groove of fixedly epoxy plate 4 and mobile epoxy plate 5 by cutting ferrule.Regulate traveling electrode 3, electrode is just contacted with the film test product.This device adopts 5 pairs of electrodes, therefore can record five groups of data simultaneously.After installing, a whole set of proving installation is immersed in the liquid nitrogen, guarantee that device is at 77k(-196 degree centigrade) low temperature environment in measure, according to circuit interconnect pattern wiring shown in Figure 2, power supply connects 220 alternating currents, convert DC current to by silicon stack and filter capacitor and be connected to experimental provision, the intermediate section depressor is the device that detects voltage, the magnitude of voltage when being used for measuring insulation breakdown.This device adopts the mode 1kV/s that boosts fast until puncture.Change the quality of tensioning member 7, adopt 0.5kg respectively, 1kg, 1.5kg and 2kg, each punctures 10 times averages, and records different breakdown voltage values.According to film test product thickness, calculate the dielectric strength under the extended state under its cryogenic conditions.
Should be noted that at last: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit, although with reference to above-described embodiment the present invention is had been described in detail, those of ordinary skill in the field are to be understood that: still can make amendment or be equal to replacement the specific embodiment of the present invention, and do not break away from any modification of spirit and scope of the invention or be equal to replacement, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (13)
1. pick-up unit, described pick-up unit comprises: electric appliance component and detection components is characterized in that: described detection components comprises and is vertically set on that support (6) is gone up and horizontal fixed head (4) and movable plate (5) placed side by side; Be respectively equipped with the hole of placing electrode system (1) on the same horizontal direction of described fixed head (4) and movable plate (5); The upper end of described fixed head (4) and movable plate (5) abutting end is provided with annular stop part (9); Be provided with tensioning member (7) between the last lower cross plate of described support (6) horizontal direction; The fixed electorde (2) of described electrode system (1) is connected described electric appliance component and ground connection respectively with moving electrode (3).
2. pick-up unit according to claim 1, it is characterized in that: described electric appliance component comprises that former edge joint high pressure, secondary connect the power frequency experimental transformer of DC experiment module; And be connected in voltage divider between described direct current experiment module and the described detection components.
3. pick-up unit according to claim 2 is characterized in that: described direct current experiment module comprise anode connect protective resistance, negative electrode connect transformer silicon stack, and be arranged on filter capacitor between described protective resistance and the described silicon stack.
4. pick-up unit according to claim 1, it is characterized in that: it is right that described fixed electorde (2) and traveling electrode (3) can arrange 3-5.
5. pick-up unit according to claim 1 is characterized in that, described fixed electorde (2) and traveling electrode (3) are cylindrical; Wherein said fixed electorde (2) one ends have screw thread, fix it on described fixed head (4) by nut (11).
6. pick-up unit according to claim 1 is characterized in that, described traveling electrode (3) places in the movable plate (5), and its length needs the width greater than movable plate (5).
7. pick-up unit according to claim 1 is characterized in that, described fixed head (4) and mobile edition (5) are rectangular thin plate, and its side is provided with equidistant 3-5 through hole.
8. pick-up unit according to claim 1 is characterized in that, described movable plate is provided with insulating sleeve in (5), is wrapped in traveling electrode (3) outward.
9. pick-up unit according to claim 1 is characterized in that, described fixed head (4) is riveted on described support (6) upper cross plate.
10. pick-up unit according to claim 1 is characterized in that, described support (6) is the rectangular parallelepiped framework that is made of 4 thin plates.
11. pick-up unit according to claim 1 is characterized in that, described proving installation is immersed in the test fluid; Described test fluid comprises liquid nitrogen.
12. pick-up unit according to claim 1 is characterized in that, the electrode material that described fixed electorde (2) and traveling electrode (3) are selected for use comprises: red copper, bronze, aluminium.
13. pick-up unit according to claim 1 is characterized in that, described fixed head (4), movable plate (5) and support (6) adopt the insulating material that is fit to liquid nitrogen environment, comprising: epoxy resin, teflon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102424738A CN103344888A (en) | 2013-06-19 | 2013-06-19 | Detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102424738A CN103344888A (en) | 2013-06-19 | 2013-06-19 | Detecting device |
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| CN103344888A true CN103344888A (en) | 2013-10-09 |
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| CN2013102424738A Pending CN103344888A (en) | 2013-06-19 | 2013-06-19 | Detecting device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105137303A (en) * | 2015-09-11 | 2015-12-09 | 云南电网有限责任公司电力科学研究院 | Insulating strength test platform for superconductive insulating materials under different elongations in liquid nitrogen environments and platform application method |
| CN117129804A (en) * | 2023-05-11 | 2023-11-28 | 国网安徽省电力有限公司马鞍山供电公司 | Epoxy resin electrical property testing device |
Citations (3)
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| JP2010281653A (en) * | 2009-06-04 | 2010-12-16 | Aisin Aw Co Ltd | Nondestructive inspection method of coil and device therefor |
| CN102096032A (en) * | 2011-01-06 | 2011-06-15 | 山东电力研究院 | Experimental facility and method for electric heating combined stress aging with oil-paper insulation of transformer |
| CN102435925A (en) * | 2011-11-21 | 2012-05-02 | 中国人民解放军国防科学技术大学 | Device and method for measuring electrical strength of material under stress condition |
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2013
- 2013-06-19 CN CN2013102424738A patent/CN103344888A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010281653A (en) * | 2009-06-04 | 2010-12-16 | Aisin Aw Co Ltd | Nondestructive inspection method of coil and device therefor |
| CN102096032A (en) * | 2011-01-06 | 2011-06-15 | 山东电力研究院 | Experimental facility and method for electric heating combined stress aging with oil-paper insulation of transformer |
| CN102435925A (en) * | 2011-11-21 | 2012-05-02 | 中国人民解放军国防科学技术大学 | Device and method for measuring electrical strength of material under stress condition |
Non-Patent Citations (3)
| Title |
|---|
| 杨鑫等: "液氮环境中3种聚合物薄膜老化和拉伸状态下的绝缘强度", 《电网技术》 * |
| 杨鑫等: "液氮环境中3种聚合物薄膜老化和拉伸状态下的绝缘强度", 《电网技术》, vol. 37, no. 3, 31 March 2013 (2013-03-31) * |
| 郭昱延等: "3种聚合物薄膜拉伸状态下的绝缘强度研究", 《绝缘材料》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105137303A (en) * | 2015-09-11 | 2015-12-09 | 云南电网有限责任公司电力科学研究院 | Insulating strength test platform for superconductive insulating materials under different elongations in liquid nitrogen environments and platform application method |
| CN117129804A (en) * | 2023-05-11 | 2023-11-28 | 国网安徽省电力有限公司马鞍山供电公司 | Epoxy resin electrical property testing device |
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Application publication date: 20131009 |