CN204926923U - A integral type porcelain insulator for 10kV lightning protection circuit - Google Patents
A integral type porcelain insulator for 10kV lightning protection circuit Download PDFInfo
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- CN204926923U CN204926923U CN201520731425.XU CN201520731425U CN204926923U CN 204926923 U CN204926923 U CN 204926923U CN 201520731425 U CN201520731425 U CN 201520731425U CN 204926923 U CN204926923 U CN 204926923U
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Abstract
The utility model discloses an integral type porcelain insulator for 10kV lightning protection circuit, including porcelain insulator body, high voltage electrode, low -field electrode and high -pressure line ball board. The porcelain insulator body forms through the pouring of integration manufacturing process with high voltage electrode and low -field electrode, be equipped with five layers of umbrella arris on the periphery wall of porcelain insulator body equidistantly, high voltage electrode includes that tectiform high voltage electrode body of cap and a pair of symmetry ground are by the outside wing striking section of extending of the lateral wall of high voltage electrode body, low pressure electrode package draws together tectiform low -field electrode body of cap and a pair of symmetry ground bar -shaped fender segmental arc by the outside extension of lateral wall of low -field electrode body, be equipped with the wire casing on the high pressure line ball board, be somebody's turn to do and be equipped with the puncture tooth of insulating layer in order to form electrical connection that is used for impaling the wire in the wire casing. The utility model discloses an insulator makes power frequency afterflow discharge path stably burn in the striking section, and not only the guardwire is not burnt, can also prevent that the insulator body from bursting.
Description
Technical field
The utility model relates to supply line's lightning protection field, particularly relates to a kind of integral type porcelain insulator for 10kV lightning protection circuit.
Background technology
At present, China in order to one of the solution preventing from 10kV distribution line to be in operation lightning-caused breaking occurs be adopt penetration type Clamping insulator, insulated conductor is stripping insulation layer not, directly be fastened on the high-field electrode of post insulator end, on the insulated conductor leaving a bit of distance of high-field electrode, installation high-voltage penetrating electrodes draws wire heart yearn, utilizes insulator pin that this wire heart yearn is caused high-field electrode.High-field electrode outer surface installing insulating cover; cause wire minor insulation weak for avoiding high voltage piercing electrode; usually high voltage piercing electrode metal parts is coated on the containment vessel inside that weatherability insulating material is made; and be designed to the structure of two halves fastening; install rear containment vessel and wire insulation presses together, can to external seal.During lightning impulse electric discharge; occur between high-field electrode and post insulator steel pin or low-field electrode; power frequency continued flow electric arc burns between high-field electrode and low-field electrode; alternate electric arc is clamped between high-field electrode; make the arc root of power frequency arc shift or be fixed on specific striking gold utensil, thus guardwire avoid melting.
But employing said method, insulator body and striking gold utensil are because being arranged on open air for a long time, the situations such as both loose contacts may be there is, make lighning proof type insulator after striking, power frequency continued flow directly passes through from insulator body, thus the electric discharge high temperature easily making power frequency continued flow produce causes local damage to insulator and circuit annex, and from current practical application effect, after using lighning proof type insulator, circuit striking lightning protection capability improves, but the probability that insulator body is damaged by lightning impulse also improves greatly.Because striking long term device is in outdoor open-air state, certain contact resistance is there is with insulator body, after anti-thunder insulator striking, actual power frequency continued flow discharge path just may not burn at striking device, but discharge along the shortest path of insulator body, and this high temperature burns and a little often concentrates between the high-field electrode of insulator and insulator body, thus high-field electrode and insulator body, umbrella rib is made to be burnt damage and even demolish.
Utility model content
The purpose of this utility model is to overcome the defect of prior art and provides a kind of integral type porcelain insulator for 10kV lightning protection circuit; it not only ensures lightning protection striking ability; and make power frequency continued flow discharge path be stabilized in striking section to burn; not only guardwire is not burnt; can also prevent insulator body from bursting, thus improve the impact capacity of anti lightning stream.
The purpose of this utility model is achieved in that a kind of integral type porcelain insulator for 10kV lightning protection circuit, comprise porcelain insulator body, be located at the high-field electrode of porcelain insulator body upper end, be positioned at porcelain insulator body lower end low-field electrode and be arranged on the high pressure tension disc of high-field electrode upper end by bolt and nut, wire clamp can be held between high pressure tension disc and high-field electrode by tightening up high pressure tension disc, wherein
Described porcelain insulator body and high-field electrode and low-field electrode are cast into integral structure;
The periphery wall of described porcelain insulator body is provided with equally spacedly five layers of umbrella rib, the diameter of these five layers of umbrella ribs reduces from top to bottom gradually;
Described high-field electrode comprises the high-field electrode body of cap cover shape and a pair symmetrically by the outward extending wing striking section of lateral wall one of high-field electrode body;
Described low-field electrode comprises the low-field electrode body of cap cover shape and a pair symmetrically by the outward extending bar-shaped gear segmental arc of lateral wall one of low-field electrode body;
Span between a pair wing striking section is equal with the span between a pair bar-shaped gear segmental arc;
Described high pressure tension disc is provided with the crossed beam trunking matched with the outer wall radian of described wire, is provided with insulating barrier for piercing through wire to form the puncture tooth of electrical connection in this crossed beam trunking.
The above-mentioned integral type porcelain insulator for 10kV lightning protection circuit, wherein, the lower surface of described wing striking section is made up of bent arc face under inner side plane and outside; Inner side plane is parallel with the lower surface of five layers of umbrella rib and extended formed by the lower surface radial direction of described high-field electrode body; On the extended line vertically upward of the outer end that the center of circle in lower bent arc face, outside is positioned at the superiors' umbrella rib; The end face of described wing striking section is downward-sloping inclined-plane and is 45 ° with the angle of inner side plane; It is 45 ° that described bar-shaped gear segmental arc extends by the above incline direction in the middle part of the lateral wall of described low-field electrode body the angle formed also and between the lower surface of five layers of umbrella rib.
The above-mentioned integral type porcelain insulator for 10kV lightning protection circuit, wherein, the thickness of described wing striking section is identical with the diameter of described bar-shaped gear segmental arc.
The above-mentioned integral type porcelain insulator for 10kV lightning protection circuit, wherein, described high-field electrode adopts aluminium alloy A380 material monolithic moulding by casting, and described low-field electrode adopts cast iron integrated poured shaping and at plating zinc on surface.
Integral type porcelain insulator for 10kV lightning protection circuit of the present utility model, a pair wing striking section is extended in the lateral wall one of high-field electrode, a pair bar-shaped gear segmental arc is extended in the lateral wall one of low-field electrode, and high-field electrode, low-field electrode and insulator body are made integral structure, there is the advantage that structural strength is high, easy for installation, the contact resistance between insulator body can be eliminated, ensure that lightning protection striking ability, make power frequency continued flow discharge path be stabilized in striking section and burn.Power frequency arc is moved between striking section and gear segmental arc and burn; not only can discharge the energy that insulated conductor gathers in lightning wave; guardwire is not burnt; effectively can also reduce insulated conductor by the probability of broken by lightning; prevent lightning-caused breaking accident and prevent insulator body from bursting; reduce the probability of lightning stroke trip, thus improve the impact capacity of power supply circuits anti lightning stream.
Accompanying drawing explanation
Fig. 1 is the structural representation of the integral type porcelain insulator for 10kV lightning protection circuit of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Refer to Fig. 1, integral type porcelain insulator for 10kV lightning protection circuit of the present utility model, comprise porcelain insulator body 1, be located at the high-field electrode 2 of porcelain insulator body 1 upper end, be positioned at the low-field electrode 3 of porcelain insulator body 1 lower end and be arranged on the high pressure tension disc 4 of high-field electrode 2 upper end by bolt and nut, wire clamp can be held between high pressure tension disc 4 and high-field electrode 2 by tightening up high pressure tension disc 4, wherein:
Porcelain insulator body 1, high-field electrode 2 and low-field electrode 3 are cast into integral structure;
Porcelain insulator body 1 adopts ceramic material to make, and its periphery wall is provided with equally spacedly five layers of umbrella rib 11 ~ 15, the diameter of these five layers of umbrella ribs 11 ~ 15 reduces from top to bottom gradually; The diameter of umbrella rib and the design of spacing distance also suitably can increase arc length, increase creepage distance, thus ensure the creepage distance of discharging gap, and the bounce-back increasing power frequency continued flow electric arc is interval, to reduce lightning stroke trip probability;
High-field electrode 2 adopts aluminium alloy A380 material monolithic moulding by casting; High-field electrode 2 comprises the high-field electrode body 20 of cap cover shape and a pair symmetrically by the outward extending wing striking section 21 of lateral wall one of high-field electrode body 20; The lower surface of wing striking section 21 is made up of bent arc face under inner side plane and outside; Inner side plane is parallel with the lower surface of five layers of umbrella rib 11 ~ 15 and extended formed by the lower surface radial direction of high-field electrode body 20; Lower bent arc face, outside be quadrant cambered surface and the center of circle be positioned at the superiors' umbrella rib 11 outer end extended line vertically upward on; The end face of wing striking section 21 is downward-sloping inclined-plane and is 45 ° with the angle of the inner side plane of the lower surface of wing striking section 21;
Low-field electrode 3 adopts cast iron integrated poured shaping and at plating zinc on surface; Low-field electrode 3 comprises the low-field electrode body 30 of cap cover shape and a pair symmetrically by the outward extending bar-shaped gear segmental arc 31 of lateral wall one of low-field electrode body 30; Bar-shaped gear segmental arc 31 is extended by the above incline direction in the middle part of the lateral wall of low-field electrode body 30 to form and corresponding with the direction that has a down dip of the end face of wing striking section 20, and the angle namely and between the lower surface of five layers of umbrella rib 11 ~ 15 is 45 °.
Span between a pair wing striking section 21 is equal with the span between a pair bar-shaped gear segmental arc 31.In addition, the thickness of wing striking section 21 is identical with the diameter of bar-shaped gear segmental arc 31.
High pressure tension disc 4 is provided with the crossed beam trunking matched with the outer wall radian of wire, is provided with insulating barrier for piercing through wire to form the puncture tooth of electrical connection in this crossed beam trunking; The length of puncture tooth must be greater than the thickness of wire insulation.
When being struck by lightning, gap discharge can be formed by between wing striking section 21 and the bar-shaped gear segmental arc 31 of ground connection by high-field electrode 2, guarantee to form flashover on porcelain insulator body 1, make porcelain insulator body 1 can not be impaired, and keep the insulation property of insulator.
Integral type porcelain insulator for 10kV lightning protection circuit of the present utility model, because the lateral wall one at high-field electrode extends a pair wing striking section, a pair bar-shaped gear segmental arc is extended in the lateral wall one of low-field electrode, and high-field electrode, low-field electrode and insulator body are made integral structure, not only there is the advantage that structural strength is high, easy for installation, the contact resistance between insulator body can also be eliminated, ensure that lightning protection striking ability, make power frequency continued flow discharge path be stabilized in striking section and burn.Power frequency arc is moved between striking section and gear segmental arc and burn; not only can discharge the energy that insulated conductor gathers in lightning wave; guardwire is not burnt; effectively can also reduce insulated conductor by the probability of broken by lightning; prevent lightning-caused breaking accident and prevent insulator body from bursting; reduce the probability of lightning stroke trip, thus improve the impact capacity of anti lightning stream.
Above embodiment is only for illustration of the utility model, but not to restriction of the present utility model, person skilled in the relevant technique, when not departing from spirit and scope of the present utility model, various conversion or modification can also be made, therefore all equivalent technical schemes also should belong to category of the present utility model, should be limited by each claim.
Claims (4)
1. the integral type porcelain insulator for 10kV lightning protection circuit, comprise porcelain insulator body, be located at the high-field electrode of porcelain insulator body upper end, be positioned at porcelain insulator body lower end low-field electrode and be arranged on the high pressure tension disc of high-field electrode upper end by bolt and nut, wire clamp can be held between high pressure tension disc and high-field electrode by tightening up high pressure tension disc, it is characterized in that
Described porcelain insulator body and high-field electrode and low-field electrode are cast into integral structure;
The periphery wall of described porcelain insulator body is provided with equally spacedly five layers of umbrella rib, the diameter of these five layers of umbrella ribs reduces from top to bottom gradually;
Described high-field electrode comprises the high-field electrode body of cap cover shape and a pair symmetrically by the outward extending wing striking section of lateral wall one of high-field electrode body;
Described low-field electrode comprises the low-field electrode body of cap cover shape and a pair symmetrically by the outward extending bar-shaped gear segmental arc of lateral wall one of low-field electrode body;
Span between a pair wing striking section is equal with the span between a pair bar-shaped gear segmental arc;
Described high pressure tension disc is provided with the crossed beam trunking matched with the outer wall radian of described wire, is provided with insulating barrier for piercing through wire to form the puncture tooth of electrical connection in this crossed beam trunking.
2., as claimed in claim 1 for the integral type porcelain insulator of 10kV lightning protection circuit, it is characterized in that,
The lower surface of described wing striking section is made up of bent arc face under inner side plane and outside; Inner side plane is parallel with the lower surface of five layers of umbrella rib and extended formed by the lower surface radial direction of described high-field electrode body; On the extended line vertically upward of the outer end that the center of circle in lower bent arc face, outside is positioned at the superiors' umbrella rib; The end face of described wing striking section is downward-sloping inclined-plane and is 45 ° with the angle of inner side plane;
It is 45 ° that described bar-shaped gear segmental arc extends by the above incline direction in the middle part of the lateral wall of described low-field electrode body the angle formed also and between the lower surface of five layers of umbrella rib.
3., as claimed in claim 1 or 2 for the integral type porcelain insulator of 10kV lightning protection circuit, it is characterized in that, the thickness of described wing striking section is identical with the diameter of described bar-shaped gear segmental arc.
4. as claimed in claim 1 for the integral type porcelain insulator of 10kV lightning protection circuit, it is characterized in that, described high-field electrode adopts aluminium alloy A380 material monolithic moulding by casting, and described low-field electrode adopts cast iron integrated poured shaping and at plating zinc on surface.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520731425.XU CN204926923U (en) | 2015-09-21 | 2015-09-21 | A integral type porcelain insulator for 10kV lightning protection circuit |
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| CN201520731425.XU CN204926923U (en) | 2015-09-21 | 2015-09-21 | A integral type porcelain insulator for 10kV lightning protection circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108109783A (en) * | 2017-12-19 | 2018-06-01 | 七星电气股份有限公司 | A kind of band external series gap line support arrester |
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2015
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108109783A (en) * | 2017-12-19 | 2018-06-01 | 七星电气股份有限公司 | A kind of band external series gap line support arrester |
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