CN203444071U - Power cable partial discharge withstand voltage test device oil cup terminal - Google Patents
Power cable partial discharge withstand voltage test device oil cup terminal Download PDFInfo
- Publication number
- CN203444071U CN203444071U CN201320480105.2U CN201320480105U CN203444071U CN 203444071 U CN203444071 U CN 203444071U CN 201320480105 U CN201320480105 U CN 201320480105U CN 203444071 U CN203444071 U CN 203444071U
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- oil cup
- contact
- power cable
- test device
- boss
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Abstract
The utility model relates to a power cable partial discharge withstand voltage test device oil cup terminal. The oil cup terminal comprises an oil cup seat, and a high-voltage connector arranged on the oil cup seat. The oil cup seat comprises a flat base and an annular wall. A boss is arranged in the middle portion of the oil cup seat. The boss is provided with a plurality of holes. A spring and an ejector pin contact which can be slid up and down are arranged in each hole. One end of the spring is pressed against the hole bottom, and the other end of the spring is pressed against the ejector pin contact. The ejector pin contact is columnar. The top end of the ejector pin contact is extended out from the hole, and the extended end of the ejector pin contact is provided with a flat plate contact. The flat plate contact can be used to increase the contact area between electrodes and conductors, so the gliding spark discharge phenomenon in the operation process can be avoided. According to the utility model, the test accuracy of the test system can be improved.
Description
Technical field
The utility model relates to a kind of electric test equipment, and especially a kind of lubricating cup terminal of putting withstand voltage test for power cable office that relates to, puts voltage-withstand test process test unit used for power cable with cross-linked polyethylene insulation in office.
Background technology
In recent years, high speed development along with modernized society, electric wire product is considered to involve a wide range of knowledge from electric pressure, from tens volts, to hundreds of thousands, lie prostrate, therefore carry out looking its electric pressure just when withstand voltage test is put in office, also adopt different testing equipments and test terminal, this has been made clearly regulation in GB/T3048 standard.For the test terminal of plastic insulating power cable, depending on its electric pressure, also there is different types of selection, be for example called " pilot system of carrying out partial discharge measurement based on high-voltage cable voltage withstand test " (CN201120454942.9); For the cable of electric pressure 6～35kV, test terminal is generally lubricating cup terminal, and traditional lubricating cup terminal tends to produce contact electric discharge in the shelf depreciation test process of cable, thereby affects cable body measurement of partial discharge accuracy.Power cable with cross-linked polyethylene insulation is put in voltage-withstand test process in office, voltage puts between each root conductor and metallic shield, traditional lubricating cup terminal forms electrical connection by thimble contact and cable conductor close contact at the trial, because of thimble area little, operate time-consuming, and use for a long time yieldingly, will cause analogous cable head end electric discharge with conductor contact bad (especially small bore cable), affect detection accuracy.
Summary of the invention
The utility model fundamental purpose is to provide and a kind ofly avoids gliding spark discharge in operating process, improves the lubricating cup terminal that Withstand test device is put in the power cable office of the measuring accuracy of test macro.
Above-mentioned technical matters of the present utility model is mainly solved by following technical proposals: the lubricating cup terminal of Withstand test device is put in power cable office, comprise oil cup seat and high pressure connection provided thereon, oil cup seat has flat and annular wall, middle part is provided with boss, boss is provided with several holes, spring is set and the thimble contact that can slide up and down in hole, spring one end against at the bottom of hole, the other end is resisted against on thimble contact, it is characterized in that: described thimble contact is column, stretch out outside hole on top, and at external part, dull and stereotyped contact is set.Metal plate contact, can increase the contact area of electrode and conductor, avoids the gliding spark discharge in operating process.Improve the measuring accuracy of test macro.
As preferably, on described boss, be arranged with the guide pin bushing of enlarging.Can facilitate cable conductor to contact with aligning of dull and stereotyped contact.
As preferably, described boss end is provided with spacing pressing plate; Thimble contact is stepped, and spacing pressing plate is passed in one end that diameter is less.Both facilitated the installation of thimble contact, the slip that can be again thimble contact provides spacing.
Therefore, the utlity model has rational in infrastructure, be easy to the features such as making, especially there is gliding spark discharge in the operating process avoided, improve the beneficial effect of the measuring accuracy of test macro.
Accompanying drawing explanation
Accompanying drawing 1 is a kind of structural representation of the present utility model.
Accompanying drawing 2 is vertical views of accompanying drawing 1.
Accompanying drawing 3 is that the utility model is used view.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: the lubricating cup terminal of Withstand test device is put in the utility model power cable office, as shown in accompanying drawing 1, accompanying drawing 2 and accompanying drawing 3, it comprises oil cup seat 8 and high pressure connection 6 provided thereon, oil cup seat 8 has flat and annular wall, middle part is provided with boss 9, boss 9 is provided with several holes, spring 5 and the thimble contact 41 that can slide up and down are set in hole, spring 5 one end against at the bottom of hole, the other end is resisted against on thimble contact 41, it is characterized in that: described thimble contact 41 is column, stretch out outside hole on top, and at external part, dull and stereotyped contact 4 is set.On boss 9, be arranged with the guide pin bushing 7 of enlarging.Boss 9 ends are provided with spacing pressing plate 10; Thimble contact 41 is stepped, and spacing pressing plate 10 is passed in one end that diameter is less.Power cable with cross-linked polyethylene insulation comprises the outer screen 1 of cable, cable insulation 2 and cable conductor 3.
At power cable with cross-linked polyethylene insulation, in office, put in voltage-withstand test process, voltage puts between each root conductor and metallic shield, traditional lubricating cup terminal forms electrical connection by thimble contact and cable conductor close contact at the trial, because of thimble area little, operate time-consuming, and use for a long time yieldingly, will cause analogous cable head end electric discharge with conductor contact bad (especially small bore cable), affect detection accuracy.
The utility model is improved traditional lubricating cup terminal, and original thimble contact is processed into metal plate contact, can increase the contact area of electrode and conductor, avoids the gliding spark discharge in operating process.Improve the measuring accuracy of test macro.
Compare with existing lubricating cup terminal, the simple operation in voltage-withstand test process is put in the office of power cable of lubricating cup terminal after improvement, the spring of thimble below is rich in feel in cable installation process, allow people feel that intuitively cable conductor fully contacts with high-field electrode, metal plate part has strengthened again the contact area with conductor, avoided the reciprocal operation of hank of cable no-go sub and disturbed electric discharge, greatly having improved detection efficiency and detected degree of accuracy.
Claims (3)
1. the lubricating cup terminal that Withstand test device is put in power cable office, comprise oil cup seat (8) and high pressure connection (6) provided thereon, oil cup seat (8) has flat and annular wall, middle part is provided with boss (9), boss (9) is provided with several holes, spring (5) is set and the thimble contact (41) that can slide up and down in hole, spring (5) one end against at the bottom of hole, the other end is resisted against on thimble contact (41), it is characterized in that: described thimble contact (41) is column, stretch out outside hole on top, and at external part, dull and stereotyped contact (4) is set.
2. the lubricating cup terminal that Withstand test device is put in power cable according to claim 1 office, is characterized in that: the guide pin bushing (7) that is arranged with enlarging on described boss (9).
3. the lubricating cup terminal that Withstand test device is put in power cable according to claim 1 and 2 office, is characterized in that: described boss (9) end is provided with spacing pressing plate (10); Thimble contact (41) is stepped, and spacing pressing plate (10) is passed in one end that diameter is less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320480105.2U CN203444071U (en) | 2013-08-07 | 2013-08-07 | Power cable partial discharge withstand voltage test device oil cup terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320480105.2U CN203444071U (en) | 2013-08-07 | 2013-08-07 | Power cable partial discharge withstand voltage test device oil cup terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203444071U true CN203444071U (en) | 2014-02-19 |
Family
ID=50095108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320480105.2U Expired - Lifetime CN203444071U (en) | 2013-08-07 | 2013-08-07 | Power cable partial discharge withstand voltage test device oil cup terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203444071U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107064763A (en) * | 2017-05-29 | 2017-08-18 | 西南交通大学 | Extreme delta is got off the local discharge test System and method for of download cable terminal |
| CN107091955A (en) * | 2017-05-29 | 2017-08-25 | 西南交通大学 | The dielectric loss experimental system and method for cable termination under the conditions of high and low temperature alternative |
-
2013
- 2013-08-07 CN CN201320480105.2U patent/CN203444071U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107064763A (en) * | 2017-05-29 | 2017-08-18 | 西南交通大学 | Extreme delta is got off the local discharge test System and method for of download cable terminal |
| CN107091955A (en) * | 2017-05-29 | 2017-08-25 | 西南交通大学 | The dielectric loss experimental system and method for cable termination under the conditions of high and low temperature alternative |
| CN107091955B (en) * | 2017-05-29 | 2018-10-30 | 西南交通大学 | The dielectric loss experimental system and method for cable termination under the conditions of high and low temperature alternative |
| CN107064763B (en) * | 2017-05-29 | 2018-11-30 | 西南交通大学 | Extreme delta is got off download cable terminal part discharge test System and method for |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140219 |