CN203376437U - A noise interference shielding case for a cable fault locating instrument - Google Patents
A noise interference shielding case for a cable fault locating instrument Download PDFInfo
- Publication number
- CN203376437U CN203376437U CN201320428391.8U CN201320428391U CN203376437U CN 203376437 U CN203376437 U CN 203376437U CN 201320428391 U CN201320428391 U CN 201320428391U CN 203376437 U CN203376437 U CN 203376437U
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- CN
- China
- Prior art keywords
- shielding case
- case body
- terminal
- lead
- cable fault
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- Expired - Lifetime
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Abstract
The utility model discloses a noise interference shielding case for a cable fault locating instrument and resolves a problem that discharging noise generated by a conventional cable fault locating instrument affects accurate fault location of the cable fault locating instrument. The noise interference shielding case comprises a shielding case body (1). A case body top cover (3) is disposed on the top of the shielding case body (1). A sponge interlayer sleeve (2) is disposed in the shielding case body (1). A discharging sphere gap device (4) is disposed in the sponge interlayer sleeve (2). A lead-in wire terminal (5) is disposed on a side of the shielding case body (1). A lead-out wire terminal (6) is disposed on the other side of the shielding case body (1). A lead-in wire (7) is arranged between the lead-in wire terminal (5) and an input wire terminal of the discharging sphere gap device (4). A lead-out wire (8) is arranged between the lead-out wire terminal (6) and an output wire terminal of the discharging sphere gap device (4). The noise interference shielding case is simple and practical and increases the accuracy of cable fault location.
Description
Technical field
The utility model relates to a kind of noise shielding case, the shielded box of the high pressure flashover discharge noise that particularly a kind of shielded cable position determination of fault instrument sends.
Background technology
Type cable failure positioning instrument is that the sound by gathering the electric discharge of high pressure flashover carries out type cable failure positioning.Because major part belongs to underground cable, be difficult to the exact position of failure judgement point with additive method, therefore the frequency of utilization of type cable failure positioning instrument is higher.But in during than short-term road or trouble spot of test during the cable closer apart from cable end, type cable failure positioning instrument usually irons because high pressure dodges, can produce larger electric discharge noise, have influence on the position determination of fault of type cable failure positioning instrument, reduce the work efficiency of position determination of fault.
Summary of the invention
The utility model provides a kind of type cable failure positioning instrument noise shielded box, has solved the accurate problem of fixing a point of its fault of electric discharge noise effect that existing type cable failure positioning instrument produces.
The utility model is to solve by the following technical programs above technical matters:
A kind of type cable failure positioning instrument noise shielded box, comprise shielding case body, top at shielding case body is provided with top cover of box, be provided with sponge interlayer cover in shielding case body, be provided with the ball discharge gap device in sponge interlayer cover, a side at shielding case body is provided with the inlead terminal, opposite side at shielding case body is provided with the extension line terminal, be provided with inlead between the input wires terminal of inlead terminal and ball discharge gap device, between the output wiring terminal of extension line terminal and ball discharge gap device, be provided with extension line.
The utility model is simple and practical, has solved the problem that type cable failure positioning instrument low coverage noise has a strong impact on accurate position determination of fault, has improved the accuracy rate of type cable failure positioning.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
A kind of type cable failure positioning instrument noise shielded box, comprise shielding case body 1, be provided with top cover of box 3 on the top of shielding case body 1, be provided with sponge interlayer cover 2 in shielding case body 1, be provided with ball discharge gap device 4 in sponge interlayer cover 2, a side at shielding case body 1 is provided with inlead terminal 5, opposite side at shielding case body 1 is provided with extension line terminal 6, be provided with inlead 7 between the input wires terminal of inlead terminal 5 and ball discharge gap device 4, between the output wiring terminal of extension line terminal 6 and ball discharge gap device 4, be provided with extension line 8.
The choice for use sponge reduces noise, selects the shell of the epoxy resin case of insulation as the ball discharge gap of type cable failure positioning instrument.First sponge is bonded on shielding case body 1 and forms sponge interlayer cover 2, the ball discharge gap is put into to sponge interlayer cover 2, lead-in wire is connected on to ball discharge gap both sides; Then respectively install a lead terminal additional in the both sides of shielding case body 1, the top cover of box 3 that finally at top, installs transparent organic glass additional is sealed, and forms finished product.
Claims (1)
1. a type cable failure positioning instrument noise shielded box, comprise shielding case body (1), be provided with top cover of box (3) on the top of shielding case body (1), it is characterized in that, be provided with sponge interlayer cover (2) in shielding case body (1), be provided with ball discharge gap device (4) in sponge interlayer cover (2), a side at shielding case body (1) is provided with inlead terminal (5), opposite side at shielding case body (1) is provided with extension line terminal (6), be provided with inlead (7) between the input wires terminal of inlead terminal (5) and ball discharge gap device (4), be provided with extension line (8) between the output wiring terminal of extension line terminal (6) and ball discharge gap device (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320428391.8U CN203376437U (en) | 2013-07-18 | 2013-07-18 | A noise interference shielding case for a cable fault locating instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320428391.8U CN203376437U (en) | 2013-07-18 | 2013-07-18 | A noise interference shielding case for a cable fault locating instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203376437U true CN203376437U (en) | 2014-01-01 |
Family
ID=49838960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320428391.8U Expired - Lifetime CN203376437U (en) | 2013-07-18 | 2013-07-18 | A noise interference shielding case for a cable fault locating instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203376437U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104132728A (en) * | 2014-06-26 | 2014-11-05 | 国家电网公司 | Device of resisting electromagnetic-field interferences for noise meter and use method thereof |
| CN105116282A (en) * | 2015-07-03 | 2015-12-02 | 国网辽宁省电力有限公司抚顺供电公司 | Remote discharging sphere gap controlling apparatus for cable fault test |
-
2013
- 2013-07-18 CN CN201320428391.8U patent/CN203376437U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104132728A (en) * | 2014-06-26 | 2014-11-05 | 国家电网公司 | Device of resisting electromagnetic-field interferences for noise meter and use method thereof |
| CN105116282A (en) * | 2015-07-03 | 2015-12-02 | 国网辽宁省电力有限公司抚顺供电公司 | Remote discharging sphere gap controlling apparatus for cable fault test |
| CN105116282B (en) * | 2015-07-03 | 2018-04-06 | 国网辽宁省电力有限公司抚顺供电公司 | A kind of cable fault test remote control ball discharge gap device |
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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 |
Granted publication date: 20140101 |
|
| CX01 | Expiry of patent term |