CN103794301B - Fuse composite insulator - Google Patents
Fuse composite insulator Download PDFInfo
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- CN103794301B CN103794301B CN201410049927.4A CN201410049927A CN103794301B CN 103794301 B CN103794301 B CN 103794301B CN 201410049927 A CN201410049927 A CN 201410049927A CN 103794301 B CN103794301 B CN 103794301B
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- metal fitting
- end metal
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- plug
- middle hardware
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Abstract
Fuse composite insulator, relates to a kind of composite insulator, and it includes plug, plug two ends are respectively connected with end metal fitting, connecting between two ends has middle hardware, mandrel outer side to be coated with umbrella sheath, and umbrella sheath is not coated on the lateral surface of end metal fitting and the lateral surface of middle hardware.Umbrella sheath is no longer coated on the lateral surface of end metal fitting and middle hardware, umbrella sheath is only coated on the lateral surface of plug, and plug is insulator, even if applying power-frequency voltage to the fuse composite insulator of the present invention during test, the phenomenon of electric discharge is not had between the brine film on plug and umbrella sheath surface yet, therefore avoid making umbrella sheath surface occur deteriorating hole because electric power corrodes umbrella sheath, thus the fuse composite insulator of the present invention just qualified can pass through runner test.
Description
Technical field
The present invention relates to a kind of composite insulator, be specifically related to a kind of fuse composite insulator.
Background technology
Nowadays the composite insulator using the umbrella sheath of silastic material making is used in transmission line of electricity and various electrical equipment the most in large quantities, the most just includes fuse, particularly high-tension fuse.The commonly used injection molding technique of umbrella sheath of the composite insulator that fuse uses is made at present, the structure of existing fuse composite insulator is as shown in Figure 1, it includes plug, end metal fitting, the umbrella sheath 2 that middle hardware and silastic material are made, end metal fitting includes end metal fitting connecting rod 31 and for the end metal fitting sleeve 32 being connected with plug, middle hardware includes middle hardware connecting rod 41 and middle hardware sleeve 42, umbrella sheath 2 is coated on plug, in addition, end metal fitting sleeve 32 and the lateral surface of middle hardware sleeve 42, and the portions of lateral side of end metal fitting connecting rod 31 and middle hardware connecting rod 41 is also coated with by umbrella sheath 2, so that composite insulator obtains longer creep age distance and dry arcing distance.The fuse composite insulator of existing this structure, the most substantially requirement can be met, it is also possible to by the test of some routines, but, when carrying out more stringent runner test, the fuse composite insulator of existing this structure often cannot pass through test.
nullAs shown in Figure 3，The assay device of runner test includes a runner in cross shape，Four bar of this runner are isometric and the most at a right angle，Runner is provided below one for the brine pit holding saline，Before insulator is carried out runner test，First insulator test product is fixed in a wherein bar of runner，In process of the test，As shown in Figure 3，Rotating wheel makes insulator test product successively arrive a position、B position、C position and d position，And respectively stop 40s in each position，This is a cyclic process，In this cyclic process，Insulator test product is first placed in the saline of brine pit in a position soak，Slightly stop in b position afterwards，Then it is applied in power-frequency voltage in c position，Finally slightly stop in d position，Carry out cyclic process next time afterwards，So after iterative cycles 30000 times, runner test terminates.The condition of acceptance of runner test is: 1, without playing trace generation；2, for composite insulator, the degree of depth in hole of deteriorating is less than 3mm, and hole of deteriorating can not arrive mandrel surface, and for resin insulator, the degree of depth in hole of deteriorating is less than 3mm；3, umbrella sheath punctures.If the insulator test product of two pieces same design all meets above-mentioned 3 conditions, the insulator pass the test of the most this design after runner test.
Existing fuse composite insulator runner test as shown in Figure 1 is defective, and reason is that the fuse composite insulator of existing this structure is not meeting the 2nd article of above-mentioned condition of acceptance after runner test.
Summary of the invention
It is an object of the invention to provide a kind of can the qualified fuse composite insulator by runner test.
nullThrough test of many times，Inventor finds that the hole of deteriorating that above-mentioned existing fuse composite insulator occurs on its umbrella sheath surface after runner test is all located at being coated on the umbrella sheath of end metal fitting lateral surface and middle hardware lateral surface，The situation about cheating that occurs near the end of the wherein opening of end metal fitting sleeve and near the end of middle hardware sleeve deteriorating is the most serious，Inventor draws through researching and analysing，Composite insulator is after saline soak，Its surface covers the brine film of one layer of conduction，This brine film turns on end metal fitting and the middle hardware of composite insulator，Therefore when applying power-frequency voltage to composite insulator, also there is electromotive force on umbrella sheath surface，But owing to this brine film ratio is relatively thin，Thickness distribution is the most uneven，Therefore the brine film conductive capability on umbrella sheath surface is poor，The electromotive force on umbrella sheath surface is just decayed along the direction away from gold utensil (gold utensil includes end metal fitting and middle hardware)，As a example by end metal fitting，As shown in Figure 1，The electromotive force on umbrella sheath surface is decayed along at e toward the direction at f，So it is coated between the surface of the umbrella sheath of this end metal fitting lateral surface and this end metal fitting and exists for electric potential difference，And this electric potential difference is being incremented by e on the direction at f，Because there is electric potential difference，So being easy for Discharge Phenomena between this end metal fitting and the brine film on the surface that is coated on umbrella sheath thereon，At f, electric discharge phenomena are the most serious，Carrying out along with test，In the course of time the umbrella sheath surface being coated on this end metal fitting is easy for occurring, because electric power corrodes, hole of deteriorating，And it is the most serious the closer to the situation in the hole that occurs at f deteriorating.The umbrella sheath surface being coated on middle hardware occur the deteriorating principle in hole is the most identical.
Based on above-mentioned analysis, the present invention provides techniques below scheme.
Fuse composite insulator, including plug, plug two ends are respectively connected with end metal fitting, and connecting between two ends has middle hardware, mandrel outer side to be coated with umbrella sheath, and umbrella sheath is not coated on the lateral surface of end metal fitting and the lateral surface of middle hardware.
Umbrella sheath is no longer coated on the lateral surface of end metal fitting and middle hardware, umbrella sheath is only coated on the lateral surface of plug, and plug is insulator, even if applying power-frequency voltage to the fuse composite insulator of the present invention during test, the phenomenon of electric discharge is not had between the brine film on plug and umbrella sheath surface yet, therefore avoid making umbrella sheath surface occur deteriorating hole because electric power corrodes umbrella sheath, thus the fuse composite insulator of the present invention just qualified can pass through runner test.
Wherein, each end metal fitting all includes end metal fitting connecting rod and the end metal fitting sleeve of the hollow for being connected with plug, end metal fitting sleeve one end open, the other end is closed, end metal fitting sleeve is socketed on plug, the end of the opening of end metal fitting sleeve connects with umbrella sheath, end metal fitting connecting rod is one-body molded with end metal fitting sleeve, end metal fitting sleeve is provided with the end metal fitting pressure contact portion for crimping gold utensil sleeve and plug, and the blind end of end metal fitting pressure contact portion and end metal fitting sleeve is in the same side of end metal fitting connecting rod.
Wherein, middle hardware includes middle hardware connecting rod and for the middle hardware sleeve being connected with plug, middle hardware sleeve hollow is through, middle hardware sleeve is socketed on plug, the end at middle hardware sleeve two ends all connects with umbrella sheath, middle hardware connecting rod is one-body molded with middle hardware sleeve, and middle hardware sleeve is only provided with the middle hardware pressure contact portion for crimping middle hardware sleeve and plug in the side of middle hardware connecting rod.
Wherein, the contact surface that the end of the opening of end metal fitting sleeve connects with umbrella sheath is curved surface, and the contact surface that the end at the two ends of middle hardware sleeve connects with umbrella sheath is curved surface.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing fuse composite insulator.
Fig. 2 is the structural representation of the fuse composite insulator of the present invention.
Fig. 3 is the test principle figure of runner test.
Reference includes: umbrella sheath 2, end metal fitting connecting rod 31, end metal fitting sleeve 32, end metal fitting pressure contact portion 33, middle hardware connecting rod 41, middle hardware sleeve 42, middle hardware pressure contact portion 43.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is elaborated.
nullAs shown in Figure 2，The fuse composite insulator of the present invention，Including plug (not shown)，Plug two ends are respectively connected with end metal fitting，Connect between two ends and have middle hardware，Mandrel outer side is coated with umbrella sheath 2，Each end metal fitting all includes end metal fitting connecting rod 31 and the end metal fitting sleeve 32 of the hollow for being connected with plug，End metal fitting sleeve 32 one end open，The other end is closed，The end metal fitting sleeve 32 of two end metal fittings is socketed on the two ends of plug respectively，End metal fitting connecting rod 31 is one-body molded with end metal fitting sleeve 32，Middle hardware includes middle hardware connecting rod 41 and for the middle hardware sleeve 42 being connected with plug，Middle hardware sleeve 42 hollow is through，Middle hardware sleeve 42 is socketed on plug，Middle hardware connecting rod 41 is one-body molded with middle hardware sleeve 42.As in figure 2 it is shown, umbrella sheath 2 is not coated on the lateral surface of end metal fitting and the lateral surface of middle hardware, umbrella sheath 2 only end with the end of the opening of end metal fitting sleeve 32 and the two ends of middle hardware sleeve 42 connects.Umbrella sheath 2 is no longer coated on the lateral surface of end metal fitting and middle hardware, umbrella sheath 2 is only coated on the lateral surface of plug, and plug is insulator, even if applying power-frequency voltage to the fuse composite insulator of the present invention during test, the phenomenon of electric discharge is not had between the brine film on plug and umbrella sheath 2 surface yet, therefore avoid making umbrella sheath 2 surface occur deteriorating hole because electric power corrodes umbrella sheath 2, thus the fuse composite insulator of the present invention just qualified can pass through runner test.
End metal fitting sleeve 32 is provided with the end metal fitting pressure contact portion 33 for crimping gold utensil sleeve 32 and plug, middle hardware sleeve 42 is provided with the middle hardware pressure contact portion 43 for crimping middle hardware sleeve 42 and plug, during the fuse composite insulator producing the present invention, after end metal fitting and middle hardware connect with plug, will middle hardware middle hardware sleeve 42 set receive on plug, and after the end metal fitting sleeve 32 of two end metal fittings overlapped respectively the two ends receiving plug, also need to use press-connection machine that end metal fitting pressure contact portion 33 and middle hardware pressure contact portion 43 are crimped, to allow end metal fitting and plug, middle hardware and the firm connection of plug.nullThe end metal fitting connecting rod 31 of two end metal fittings is parallel to each other，According to specification requirement，The distance of the end metal fitting connecting rod 31 of two end metal fittings is a fixed value，If the end metal fitting of the existing fuse composite insulator shown in employing Fig. 1 and the structure of middle hardware，And if umbrella sheath 2 is not coated on the lateral surface of end metal fitting and middle hardware，The dry arcing distance of composite insulator is the most up to standard，Therefore，The fuse composite insulator of the present invention suitably lengthens the length of plug，The end metal fitting pressure contact portion 33 of end metal fitting and the blind end of end metal fitting sleeve 32 are arranged on the same side of end metal fitting connecting rod 31 again，The middle hardware sleeve 42 of the middle hardware of the fuse composite insulator of the present invention is only provided with the middle hardware pressure contact portion 43 for crimping middle hardware sleeve 42 and plug in the side of middle hardware connecting rod 41 simultaneously，To increase the dry arcing distance of composite insulator，Thus meet the requirement of fuse composite insulator dry arcing distance.
Further, the contact surface that the end of the opening of end metal fitting sleeve 32 connects with umbrella sheath 2 is curved surface, the contact surface that the end at the two ends of middle hardware sleeve 42 connects with umbrella sheath 2 is curved surface, penetrates into mandrel surface with the contact surface preventing the end at the two ends of contact surface that the steam in air connects with umbrella sheath 2 from the end of the opening of end metal fitting sleeve 32 easily and middle hardware sleeve 42 from connecting with umbrella sheath 2.
Table 1 is the runner test Comparative result of the test product of 2 same design of the fuse composite insulator of the test product of 4 same design of existing fuse composite insulator as shown in Figure 1 and the present invention.
The fuse composite insulator test product runner test Comparative result of table 1. existing fuse composite insulator test product and the present invention
It follows that the fuse composite insulator of present invention full skirt surface after runner test does not occurs hole of deteriorating, therefore having passed through runner test.
Finally should be noted that; above example is only in order to illustrate technical scheme; rather than limiting the scope of the invention; although having made to explain to the present invention with reference to preferred embodiment; it will be understood by those within the art that; technical scheme can be modified or equivalent, without deviating from the spirit and scope of technical solution of the present invention.
Claims (3)
1. fuse composite insulator, including plug, plug two ends are respectively connected with end metal fitting, and connecting between two ends has middle hardware, mandrel outer side to be coated with umbrella sheath, it is characterized in that: end metal fitting and middle hardware are all enclosed within outside plug；Outside at plug, end metal fitting and umbrella sheath not stacking, middle hardware and umbrella sheath not stacking, each end metal fitting all includes end metal fitting connecting rod and the end metal fitting sleeve of the hollow for being connected with plug, end metal fitting sleeve one end open, the other end is closed, end metal fitting sleeve is socketed on plug, the end of the opening of end metal fitting sleeve connects with umbrella sheath, end metal fitting connecting rod is one-body molded with end metal fitting sleeve, end metal fitting sleeve is provided with the end metal fitting pressure contact portion for crimping gold utensil sleeve and plug, the blind end of end metal fitting pressure contact portion and end metal fitting sleeve is in the same side of end metal fitting connecting rod.
Fuse composite insulator the most according to claim 1, it is characterized in that, middle hardware includes middle hardware connecting rod and for the middle hardware sleeve being connected with plug, middle hardware sleeve hollow is through, middle hardware sleeve is socketed on plug, the end at middle hardware sleeve two ends all connects with umbrella sheath, middle hardware connecting rod is one-body molded with middle hardware sleeve, and middle hardware sleeve is only provided with the middle hardware pressure contact portion for crimping middle hardware sleeve and plug in the side of middle hardware connecting rod.
Fuse composite insulator the most according to claim 2, is characterized in that, the contact surface that the end of the opening of end metal fitting sleeve connects with umbrella sheath is curved surface, and the contact surface that the end at the two ends of middle hardware sleeve connects with umbrella sheath is curved surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410049927.4A CN103794301B (en) | 2014-02-13 | 2014-02-13 | Fuse composite insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410049927.4A CN103794301B (en) | 2014-02-13 | 2014-02-13 | Fuse composite insulator |
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| Publication Number | Publication Date |
|---|---|
| CN103794301A CN103794301A (en) | 2014-05-14 |
| CN103794301B true CN103794301B (en) | 2016-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410049927.4A Active CN103794301B (en) | 2014-02-13 | 2014-02-13 | Fuse composite insulator |
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| Country | Link |
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| CN (1) | CN103794301B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105304231B (en) * | 2015-11-13 | 2017-03-22 | 周海兵 | Composite insulator |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2278993Y (en) * | 1996-06-14 | 1998-04-15 | 史鹤亭 | High voltage combined drop-down fuse |
| CN2717003Y (en) * | 2004-08-13 | 2005-08-10 | 鞍山兰陵电器有限公司 | Three-station AC high-voltage drop type fuse |
| CN202042292U (en) * | 2011-04-02 | 2011-11-16 | 武汉雷泰电力科技发展有限公司 | Composite jacket pillar insulator for 35kV and below voltage dropout fuse |
| CN202423198U (en) * | 2012-01-11 | 2012-09-05 | 刘进生 | Fixed type outdoor drop-out fuse |
| CN203351300U (en) * | 2013-06-26 | 2013-12-18 | 东莞市高能电气股份有限公司 | Composite insulator for high voltage fuse |
| CN203721394U (en) * | 2014-02-13 | 2014-07-16 | 长园高能电气股份有限公司 | Composite insulator for fuse protector |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7154034B2 (en) * | 2002-12-19 | 2006-12-26 | Lynch Michael D | Method and apparatus for protection of wildlife from contact with power phase cutout mechanism |
| US7002079B2 (en) * | 2003-08-14 | 2006-02-21 | Electric Power Research Institute | Indicators for early detection of potential failures due to water exposure of polymer-clad fiberglass |
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2014
- 2014-02-13 CN CN201410049927.4A patent/CN103794301B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2278993Y (en) * | 1996-06-14 | 1998-04-15 | 史鹤亭 | High voltage combined drop-down fuse |
| CN2717003Y (en) * | 2004-08-13 | 2005-08-10 | 鞍山兰陵电器有限公司 | Three-station AC high-voltage drop type fuse |
| CN202042292U (en) * | 2011-04-02 | 2011-11-16 | 武汉雷泰电力科技发展有限公司 | Composite jacket pillar insulator for 35kV and below voltage dropout fuse |
| CN202423198U (en) * | 2012-01-11 | 2012-09-05 | 刘进生 | Fixed type outdoor drop-out fuse |
| CN203351300U (en) * | 2013-06-26 | 2013-12-18 | 东莞市高能电气股份有限公司 | Composite insulator for high voltage fuse |
| CN203721394U (en) * | 2014-02-13 | 2014-07-16 | 长园高能电气股份有限公司 | Composite insulator for fuse protector |
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| CN103794301A (en) | 2014-05-14 |
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