CN103325551A - End screen outgoing line protection and anti-interference device - Google Patents
End screen outgoing line protection and anti-interference device Download PDFInfo
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- CN103325551A CN103325551A CN2013102698704A CN201310269870A CN103325551A CN 103325551 A CN103325551 A CN 103325551A CN 2013102698704 A CN2013102698704 A CN 2013102698704A CN 201310269870 A CN201310269870 A CN 201310269870A CN 103325551 A CN103325551 A CN 103325551A
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Abstract
An end screen outgoing line protection and anti-interference device comprises a metal bellow soft connecting component, a pipeline hard connecting component with a central cavity, a second metal bellow, and a tail-end head. The metal bellow soft connecting component is composed of a first metal bellow and two connectors at two ends of the first metal bellow. Each connector is provided with inner threads and an axial through hole on a rear seal plate. The two ends of the first metal bellow respectively penetrate through the two through holes of the two connectors to form a limit boss in a cylinder. The pipeline hard connecting component comprises a first outer-thread section, a boss section and a rear connecting section, wherein the first outer-thread section is connected with one connector in a threaded manner, the rear connecting section is coaxially provided with an annular clamp groove outside the central cavity, and spiral threads matched with the metal bellows are formed on the inner annular wall of the clamp groove. The front end of the second metal bellow is tightened to the inner annular wall of the clamp groove. The cylinder of the tail-end head is provided with inner threads matched with the second metal bellow and tightened at the rear end of the second bellow. The rear seal plate of the tail-end head is provided with a through hole along an axis. By the end screen outgoing line protection and anti-interference device, outgoing lines can be protected, and well grounding, reliable insulation, airtightness, durability and safe operation of an end screen are guaranteed.
Description
Technical field
The present invention relates to the transformer technology field, especially the protection of the lead-out wire of transformer end shield and anti-tampering technical field.
Background technology
Along with electrical network development and electrical network scale constantly enlarge, implement the grid equipment repair based on condition of component imperative.And the correct collection of Condition Detection information is the basis of repair based on condition of component, can make assessment to equipment health status and fault progression trend, rationally reduces the cost of overhaul, improves overhaul efficiency, the support equipment reliability service.Bushing shell for transformer is as one of important component part of transformer, one of equipment of crucial importance that ensures electric power netting safe running, timely monitoring to its state seems particularly important, for timely discovery power grid security hidden danger, ensures the electric power netting safe running important in inhibiting.
The lead-out wire of Transformer Bushing Tap is exposed outside at present, the factor affecting such as environment that are subject to exposing to the weather, lead-out wire easily causes corrosion and damage, thus the safety of ground connection that threatens end shield is good, can not guarantee that end shield ground connection is good, insulation is reliable, sealing, its safe operation of durable guarantee.
Summary of the invention
The shortcoming that exists in order to overcome above-mentioned prior art the object of the present invention is to provide a kind of end shield lead-out wire protection and interference preventer, and it can effectively protect lead-out wire to guarantee that end shield ground connection is good, and insulation is reliable, sealing, its safe operation of durable guarantee.
In order to address the above problem, the present invention by the following technical solutions: a kind of end shield lead-out wire protection and interference preventer, it is characterized in that, comprising:
The metal bellows soft connection component comprises the first metal bellows and is separately positioned on two connectors made of copper at the first metal bellows two ends that two connectors are designated as respectively front connector, rear connector; Described connector is comprised of cylindrical shell, rear shrouding, the rear end that is connected to cylindrical shell of rear shrouding sealing, and cylindrical shell is provided with internal thread; Be provided with through hole along described axis on the described rear shrouding; Two ends of described the first metal bellows pass respectively the through hole of two connectors and in described cylindrical shell radially extension form positive stop lug boss, the diameter of described positive stop lug boss is greater than the diameter of described through hole;
The hard connector of pipeline made of copper is provided with center cavity; The hard connector of described pipeline comprises anterior the first external thread section, the boss section at middle part and the rear linkage section at rear portion; The external diameter of described boss section is greater than the external diameter of the first external thread section, rear linkage section; The first external thread section is threaded with rear connector in the described metal bellows soft connection component; Rear linkage section arranges an annular slot in the periphery of center cavity, annular slot and described center cavity coaxial line, the opening of annular slot backwards, and internal ring wall is provided with the spiral that cooperates with the metal bellows helical fissure;
The second metal bellows is tightened the internal ring wall of the annular slot of the hard connector of pipeline on the inwall of the second metal bellows front end;
Terminal head made of copper, by cylindrical shell, rear shrouding, the rear end that is connected to cylindrical shell of rear shrouding sealing, cylindrical shell is provided with the inside spin line that cooperates with the helical fissure of the second metal bellows; And be tightened in by this inside spin line on the rear end outer wall of the second metal bellows, be provided with through hole along described axis on the described rear shrouding.
Further:
Connector before in the described metal bellows soft connection component is provided with the first sealing ring between the front end face of rear shrouding and the rear end face of described rear end cap;
Connector after in the described metal bellows soft connection component is provided with the second sealing ring between the front end face of the rear end face of rear shrouding and the hard connector of described pipeline.
Further, in the hard connector of described pipeline, the internal ring wall of annular slot is longer than the external annulus of annular slot backward.
The invention has the beneficial effects as follows: it can effectively protect lead-out wire to guarantee that end shield ground connection is good, and insulation is reliable, sealing, its safe operation of durable guarantee.
Description of drawings
The present invention is described further below in conjunction with drawings and Examples:
Fig. 1 is the structural representation of the embodiment of the invention;
Among the figure: 7 metal bellows soft connection component, 71 first metal bellowss, 72 front connectors, 73 rear connectors, 74 cylindrical shells, 75 rear shroudings, 76 through holes, 77 positive stop lug boss; The hard connector of 8 pipelines, 81 center cavities, 82 first external thread sections, 83 boss sections, 84 rear linkage sections, 85 annular slots, 86 internal ring walls, 87 external annulus, 9 second metal bellowss, 10 terminal heads, 101 cylindrical shells, 102 rear shroudings, 103 through holes, 13 first sealing rings, 14 second sealing rings.
Embodiment
The protection of as shown in Figure 1 end shield lead-out wire and interference preventer comprise metal bellows soft connection component 7, the hard connector 8 of pipeline, the second metal bellows 9, terminal 10.
Metal bellows soft connection component 7 comprises the first metal bellows 71 and is separately positioned on two connectors at the first metal bellows two ends, and two connectors are designated as respectively front connector 72, rear connector 73.
Wherein front connector 72, rear connector 73, the hard connector 8 of pipeline, be copper for terminal 10.
The axis of described end shield guide rod 3 is axis.The relative position that forward and backward statement in following is just adopted for convenience of description, and do not represent the absolute position.
In the described metal bellows soft connection component 7, described two connectors are comprised of cylindrical shell 74, rear shrouding 75, the rear end that is connected to cylindrical shell 74 of rear shrouding 75 sealings, and cylindrical shell 74 is provided with internal thread.Be provided with through hole 76 along axis on the described rear shrouding 75.
Two ends of described the first metal bellows 71 pass respectively the through hole 76 of two connectors and in described cylindrical shell 74 radially extension form positive stop lug boss 77, the diameter of described positive stop lug boss 77 is greater than the diameter of described through hole 76.
The hard connector 8 of pipeline is provided with center cavity 81.The hard connector 8 of described pipeline comprises anterior the first external thread section 82, the boss section 83 at middle part and the rear linkage section 84 at rear portion.The external diameter of described boss section 83 is greater than the external diameter of the first external thread section 82, rear linkage section 84.The first external thread section 82 is threaded with rear connector 73 in the described metal bellows soft connection component 7.Rear linkage section 84 arranges an annular slot 85 in the periphery of center cavity, annular slot 85 and center cavity 81 coaxial lines, the opening of annular slot 85 backwards, and internal ring wall 86 is provided with the spiral that cooperates with the metal bellows helical fissure.
Tighten the internal ring wall 86 of the annular slot of the hard connector 8 of pipeline on the inwall of the second metal bellows 9, the second metal bellowss 9 front ends.In the hard connector 8 of described pipeline, the internal ring wall 86 of annular slot 85 is longer than the external annulus 87 of annular slot 85 backward.
For further enhanced leaktightness effect, the reliability that protection lead-out wire, assurance are drawn, front connector 72 is provided with the first sealing ring 13 in the described metal bellows soft connection component 7 between the rear end face of the front end face of rear shrouding and described rear end cap 5.Connector 73 after in the described metal bellows soft connection component 7 is provided with the second sealing ring 14 between the front end face of the rear end face of rear shrouding and the hard connector 8 of described pipeline.
During use, front connector 72 is connected with existing protective cover main body, the end shield guide rod, draw guide rod, lead-out wire forms a conductive path, so that electric current passes through.One end of lead-out wire with draw the guide rod conducting, lead-out wire passes the first metal bellows 71, the hard connector 8 of pipeline, the second metal bellows 9 successively, and is drawn by the through hole 103 on the shrouding 102 after in terminal 10.
The first metal bellows 71, front connector 72, rear connector 73, the hard connector 8 of pipeline, the second metal bellows 9, terminal 10 formation, one metal shell, can guarantee that lead-out wire is not subjected to such environmental effects and sustains damage, thereby guarantee the fail safe of drawing; Can shield the external interference signal again, for accurately online detection provides safeguard.
Claims (3)
1. an end shield lead-out wire protects and interference preventer, it is characterized in that, comprising:
The metal bellows soft connection component comprises the first metal bellows and is separately positioned on two connectors made of copper at the first metal bellows two ends that two connectors are designated as respectively front connector, rear connector; Described connector is comprised of cylindrical shell, rear shrouding, the rear end that is connected to cylindrical shell of rear shrouding sealing, and cylindrical shell is provided with internal thread; Be provided with through hole along axis on the described rear shrouding; Two ends of described the first metal bellows pass respectively the through hole of two connectors and in described cylindrical shell radially extension form positive stop lug boss, the diameter of described positive stop lug boss is greater than the diameter of described through hole;
The hard connector of pipeline made of copper is provided with center cavity; The hard connector of described pipeline comprises anterior the first external thread section, the boss section at middle part and the rear linkage section at rear portion; The external diameter of described boss section is greater than the external diameter of the first external thread section, rear linkage section; The first external thread section is threaded with rear connector in the described metal bellows soft connection component; Rear linkage section arranges an annular slot in the periphery of center cavity, annular slot and described center cavity coaxial line, the opening of annular slot backwards, and internal ring wall is provided with the spiral that cooperates with the metal bellows helical fissure;
The second metal bellows is tightened the internal ring wall of the annular slot of the hard connector of pipeline on the inwall of the second metal bellows front end;
Terminal head made of copper, by cylindrical shell, rear shrouding, the rear end that is connected to cylindrical shell of rear shrouding sealing, cylindrical shell is provided with the inside spin line that cooperates with the helical fissure of the second metal bellows; And be tightened in by this inside spin line on the rear end outer wall of the second metal bellows, be provided with through hole along axis on the described rear shrouding.
2. a kind of end shield lead-out wire protection according to claim 1 and interference preventer is characterized in that,
Connector before in the described metal bellows soft connection component is provided with the first sealing ring between the front end face of rear shrouding and the rear end face of described rear end cap;
Connector after in the described metal bellows soft connection component is provided with the second sealing ring between the front end face of the rear end face of rear shrouding and the hard connector of described pipeline.
3. a kind of end shield lead-out wire protection according to claim 1 and 2 and interference preventer is characterized in that, in the hard connector of described pipeline, the internal ring wall of annular slot is longer than the external annulus of annular slot backward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102698704A CN103325551A (en) | 2013-06-28 | 2013-06-28 | End screen outgoing line protection and anti-interference device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102698704A CN103325551A (en) | 2013-06-28 | 2013-06-28 | End screen outgoing line protection and anti-interference device |
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| Publication Number | Publication Date |
|---|---|
| CN103325551A true CN103325551A (en) | 2013-09-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102698704A Pending CN103325551A (en) | 2013-06-28 | 2013-06-28 | End screen outgoing line protection and anti-interference device |
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| Country | Link |
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| CN (1) | CN103325551A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104965115A (en) * | 2015-06-25 | 2015-10-07 | 国网山东省电力公司济南供电公司 | Capacitive device end screen current lossless sampling device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB747880A (en) * | 1954-02-04 | 1956-04-18 | English Electric Co Ltd | Improvements in and relating to the construction of end caps for electrical bushings |
| CN2095493U (en) * | 1991-03-13 | 1992-02-05 | 杨俭 | Connecting assemblage for coaxial cable with high anti-drawing pressure |
| CN201000797Y (en) * | 2007-01-05 | 2008-01-02 | 浙江江山变压器有限公司 | Nail-free segmented power transformer high-voltage bushing |
| CN202840157U (en) * | 2012-09-24 | 2013-03-27 | 广州供电局有限公司 | Tap adapter |
| CN103050240A (en) * | 2012-12-17 | 2013-04-17 | 浙江省电力公司电力科学研究院 | Lead-out device of transformer bushing end screen signal |
| CN103050239A (en) * | 2012-12-17 | 2013-04-17 | 浙江省电力公司电力科学研究院 | Thread type lead-out device of transformer bushing end screen signal |
| CN203325638U (en) * | 2013-06-28 | 2013-12-04 | 国家电网公司 | Protection and anti-interference device for outgoing line of tap |
-
2013
- 2013-06-28 CN CN2013102698704A patent/CN103325551A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB747880A (en) * | 1954-02-04 | 1956-04-18 | English Electric Co Ltd | Improvements in and relating to the construction of end caps for electrical bushings |
| CN2095493U (en) * | 1991-03-13 | 1992-02-05 | 杨俭 | Connecting assemblage for coaxial cable with high anti-drawing pressure |
| CN201000797Y (en) * | 2007-01-05 | 2008-01-02 | 浙江江山变压器有限公司 | Nail-free segmented power transformer high-voltage bushing |
| CN202840157U (en) * | 2012-09-24 | 2013-03-27 | 广州供电局有限公司 | Tap adapter |
| CN103050240A (en) * | 2012-12-17 | 2013-04-17 | 浙江省电力公司电力科学研究院 | Lead-out device of transformer bushing end screen signal |
| CN103050239A (en) * | 2012-12-17 | 2013-04-17 | 浙江省电力公司电力科学研究院 | Thread type lead-out device of transformer bushing end screen signal |
| CN203325638U (en) * | 2013-06-28 | 2013-12-04 | 国家电网公司 | Protection and anti-interference device for outgoing line of tap |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104965115A (en) * | 2015-06-25 | 2015-10-07 | 国网山东省电力公司济南供电公司 | Capacitive device end screen current lossless sampling device |
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Application publication date: 20130925 |