CN203337770U - Cable voltage-withstand test device - Google Patents
Cable voltage-withstand test device Download PDFInfo
- Publication number
- CN203337770U CN203337770U CN2013203581981U CN201320358198U CN203337770U CN 203337770 U CN203337770 U CN 203337770U CN 2013203581981 U CN2013203581981 U CN 2013203581981U CN 201320358198 U CN201320358198 U CN 201320358198U CN 203337770 U CN203337770 U CN 203337770U
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- cable
- developmental tube
- lid
- test
- voltage test
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Abstract
The utility model provides a cable voltage-withstand test device, comprising a pair of test tubes which are vertically arranged on an insulating bracket, wherein lower ends of the test tubes are respectively provided with a sealing structure, and the two sealing structures are respectively provided with a cable wire jack matched with a semiconductor layer of a cable wire; and the upper end of one test tube is provided with a metal electrode cover, and the upper end of the other test tube is provided with an insulating cover. The metal electrode cover comprises a cover body arranged at the upper end corresponding to one test tube and an electrode contact arranged on the cover body. According to the cable voltage-withstand test device, the cable wire jacks are arranged at the bottom ends of the test tubes, so that the cable wire is inserted into the test tubes through the cable wire jacks from bottom to top, and different cable layers of the cable wire correspond to different liquid testing media in the test tubes, thereby carrying out cable voltage-withstand tests such as quadruple four-hour cable voltage test.
Description
Technical field
The utility model relates to a kind of test unit, specifically, has related to a kind of test unit of the cable voltage for the industrial frequency AC withstand voltage test.
Background technology
The industrial frequency AC withstand voltage test is to identify the most direct method of wire cable insulating intensity, it for judge whether electric wire puts into operation and have decisive meaning, is also assurance wire cable insulating level, avoid the important means of insulation fault.The cable voltage test requires higher to insulating performance of cable, be also check insulating performance of cable the best way simultaneously.
But, can there be following problem in current test method in practical operation: the cable two ends are placed in respectively to the developmental tube that two fillings have insulation silicone oil, after energising, the cable insulation at two ends and cable semiconductor layer are assembled a large amount of electric charges are arranged near the transversal section, end of cable semiconductor layer, near causing this transversal section, local electric field strength is excessive, make near this transversal section easily breakdown, cause test in the situation that normally do not complete and be forced to interrupt, usually occur that this kind of situation is not the quality problems of cable itself, but near-end or far-end discharge capacity are excessive, and electric weight is not effectively discharged or discharge the transmission load that has surpassed cable semiconductor layer to be caused and punctures.And cable voltage test is a kind of destructive test, single test does not complete and just can not reuse original cable and again test, and need to again intercept cable testing.So not only lost time but also wasted material.
In order to solve the problem of above existence, people are seeking a kind of desirable technical solution always.
The utility model content
The purpose of this utility model is for the deficiencies in the prior art, thereby provides a kind of design science, semiconductor layer and electric field evenly, insulation course and semiconductor layer be difficult for breakdown cable voltage test unit on every side.
To achieve these goals, the technical scheme that the utility model adopts is: a kind of cable voltage test unit, comprise a pair of developmental tube vertically be arranged on insulating support, the lower end of two described developmental tubes is equipped with plugging structure, and two described plugging structures all have the cable jack with cable semiconductor layer adaptation; The upper end of one of them described developmental tube is provided with the metal electric polar cap, and the upper end of another described developmental tube is provided with insulating lid.
Based on above-mentioned, described metal electric polar cap comprises the lid that is arranged on corresponding described developmental tube upper end and is arranged on the electrode contact on described lid.
Based on above-mentioned, described metal electric polar cap is the copper electrode lid, and described insulating lid is the high damping lid.
Based on above-mentioned, two described developmental tube lower ends are respectively arranged with valve.
Based on above-mentioned, described developmental tube is high pressure resistant plexi-glass tubular.
Based on above-mentioned, described plugging structure is integrated the plugging plate of being located at described developmental tube lower end.
The relative prior art of the utility model has substantive distinguishing features and progress, and specifically, this cable voltage test unit is arranged on the developmental tube bottom by the cable jack, makes cable be inserted in developmental tube from the bottom up by the cable jack.During use from developmental tube upper end injected water successively and silicone oil, make the insulation course of cable be arranged in silicone oil, the semiconductor layer of cable is in water, character due to water itself, for semiconductor layer, water layer has been equivalent to strengthen volume and the surface area of semiconductor layer, thereby make near the CHARGE DISTRIBUTION boundary of semiconductor layer and insulation course more even, can not assemble in part, therefore can not produce the excessive situation of local field strength, avoided due to the local generation of assembling the punch-through caused of electric charge, thereby carry out smoothly as four times of four hours cable voltages such as cable voltage test tests.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1. insulating support; 2. silicone oil; 3. developmental tube; 4. plugging structure; 5. lid; 6. insulating lid; 7. cable; 8. water; 9. electrode contact; 10. valve; 11. insulation course; 12. semiconductor layer; 13. metal screen layer.
Embodiment
Below by embodiment, the technical solution of the utility model is described in further detail.
As shown in Figure 1, a kind of cable voltage test unit, comprise a pair of developmental tube 3 vertically be arranged on insulating support 1, and described developmental tube 3 is high pressure resistant plexi-glass tubular.The lower end of two described developmental tubes 3 is equipped with plugging structure 4, and described plugging structure 4 is integrated the plugging plate of being located at described developmental tube 3 lower ends.Two described plugging structures 4 all have the cable jack with semiconductor layer 12 adaptations of cable 7.Design makes cable 7 be inserted into from the bottom up in developmental tube 3 by described cable jack like this, make the different cable floors of described cable 7 corresponding with the different liquids test(ing) medium in developmental tube 3, thereby carry out as four times of four hours cable voltages such as cable voltage test tests.In the present embodiment, water 8 and silicone oil 2 are the liquid pilot medium of this test, and water 8 can conduct electricity, and silicone oil 2 is non-conductive, because the density of water 8 is greater than the density of silicone oil 2, so silicone oil 2 swims on the described water surface.Therefore, cable 7 is to the setting of " U " type, two ends of the described cable 7 of strip off, make two described ends of described cable 7 be followed successively by from top to bottom insulation course 11 and semiconductor layer 12, developmental tube 3 is upwards inserted to by two cable jacks respectively in two ends of described cable 7, first in backward developmental tube, injected water 8 and silicone oil 2 make, and described insulation course 11 is arranged in described silicone oil 2, and described semiconductor layer 12 is arranged in described water 8.Described semiconductor layer 12 has the effect of uniform electric field; and the effect of described water 8 is at dielectric layer for auxiliary uniform electric field of the outer formation of described semiconductor layer 12; make described semiconductor layer 12 more even with the CHARGE DISTRIBUTION of the boundary of described insulation course 11; can not assemble in part; therefore can not produce the excessive situation of local field strength, protect near this boundary not breakdown.
The junction encapsulation process of described cable 7 and described cable jack, prevent the liquid pilot dielectric leakage.
Described metal electric polar cap gland bonnet is located to the upper port place of one of them described developmental tube 3 and is electrically connected to described cable 7 ends in this developmental tube 3.Described insulating lid 6 gland bonnets are located to the upper port place of another described developmental tube 3 and make and there is gap between the upper end heart yearn of described insulating lid 6 and described cable 7.The effect in this gap is that insulation distance between the cable at this place 7 and described insulating lid 6 is increased, and improves the insulating property at this place.Described metal electric polar cap is the copper electrode lid, and described insulating lid 4 is the high damping lid.Described metal electric polar cap has the effect and the effect that is connected the high pressure live wire of shutoff developmental tube 3.Described metal electric polar cap comprises the lid 5 that is arranged on corresponding described developmental tube 2 upper ends and is arranged on the electrode contact 9 on described lid 5, and described electrode contact 9 is for connecting the high pressure live wire.
The part metals screen layer 13 that described cable 7 is stripped out is electrically connected to ground wire, at described cable 7, is positioned on the part of two described developmental tube 3 outsides, and an optional place all can be used as the position of offering of described electric conductor.
Two described developmental tube 3 lower ends are respectively arranged with valve 10, for the discharge liquid test(ing) medium.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit; Although with reference to preferred embodiment, the utility model is had been described in detail, those of ordinary skill in the field are to be understood that: still can modify or the part technical characterictic is equal to replacement embodiment of the present utility model; And not breaking away from the spirit of technical solutions of the utility model, it all should be encompassed in the middle of the technical scheme scope that the utility model asks for protection.
Claims (6)
1. a cable voltage test unit, comprise a pair of developmental tube vertically be arranged on insulating support, it is characterized in that: the lower end of two described developmental tubes is equipped with plugging structure, and two described plugging structures all have the cable jack with cable semiconductor layer adaptation; The upper end of one of them described developmental tube is provided with the metal electric polar cap, and the upper end of another described developmental tube is provided with insulating lid.
2. cable voltage test unit according to claim 1, it is characterized in that: described metal electric polar cap comprises the lid that is arranged on corresponding described developmental tube upper end and is arranged on the electrode contact on described lid.
3. cable voltage test unit according to claim 2 is characterized in that: described metal electric polar cap is the copper electrode lid, and described insulating lid is the high damping lid.
4. according to claim 1 or 2 or 3 described cable voltage test units, it is characterized in that: two described developmental tube lower ends are respectively arranged with valve.
5. according to claim 1 or 2 or 3 described cable voltage test units, it is characterized in that: described developmental tube is high pressure resistant plexi-glass tubular.
6. according to claim 1 or 2 or 3 described cable voltage test units, it is characterized in that: described plugging structure is integrated the plugging plate of being located at described developmental tube lower end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203581981U CN203337770U (en) | 2013-06-21 | 2013-06-21 | Cable voltage-withstand test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203581981U CN203337770U (en) | 2013-06-21 | 2013-06-21 | Cable voltage-withstand test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203337770U true CN203337770U (en) | 2013-12-11 |
Family
ID=49706437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203581981U Expired - Fee Related CN203337770U (en) | 2013-06-21 | 2013-06-21 | Cable voltage-withstand test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203337770U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103336229A (en) * | 2013-06-21 | 2013-10-02 | 河南开启电力实业有限公司 | Cable pressure resistant test device and cable pressure resistant test method |
| CN104865509A (en) * | 2015-06-09 | 2015-08-26 | 成都盛帮双核科技有限公司 | GIS cable terminal testing device |
| CN105067976A (en) * | 2015-08-05 | 2015-11-18 | 国家电网公司 | Cable GIS terminal integral prefabricated AC withstand voltage testing device |
-
2013
- 2013-06-21 CN CN2013203581981U patent/CN203337770U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103336229A (en) * | 2013-06-21 | 2013-10-02 | 河南开启电力实业有限公司 | Cable pressure resistant test device and cable pressure resistant test method |
| CN103336229B (en) * | 2013-06-21 | 2016-02-03 | 河南开启电力实业有限公司 | Cable voltage test unit and cable voltage test method |
| CN104865509A (en) * | 2015-06-09 | 2015-08-26 | 成都盛帮双核科技有限公司 | GIS cable terminal testing device |
| CN104865509B (en) * | 2015-06-09 | 2017-10-20 | 成都盛帮双核科技有限公司 | A kind of GIS cable terminations experimental rig |
| CN105067976A (en) * | 2015-08-05 | 2015-11-18 | 国家电网公司 | Cable GIS terminal integral prefabricated AC withstand voltage testing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131211 Termination date: 20170621 |