CN203312753U

CN203312753U - Overvoltage protector

Info

Publication number: CN203312753U
Application number: CN2013203843679U
Authority: CN
Inventors: 向碧琼; 谭晓勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-06-28
Filing date: 2013-06-28
Publication date: 2013-11-27
Anticipated expiration: 2023-06-28

Abstract

The utility model provides an overvoltage protector including a first guiding inserting coil, a second guiding inserting coil, an insulation rod, a current limiting element and a connection armor clamp. One end of the second guiding inserting coil is connected with one end of the current limiting element. The other end of the current limiting element is connected with one end of the connection armor clamp. The other end of the connection armor clamp is fixed on the insulation rod. The first guiding inserting coil is fixed on the insulation rod. One end of the first guiding inserting coil is connected with an overhead lead while the other end points to the other end of the second guiding inserting coil. And an air gap is formed between the first guiding inserting coil and the other end of the second guiding inserting coil. The guiding inserting coils are wrapped with insulation layers. An end of the first guiding inserting coil that is adjacent to the second guiding inserting coil is drawn in a cavity of the corresponding one of the insulation layers. An end of the second guiding inserting coil that is adjacent to the first guiding inserting coil is exposed outside the corresponding one of the insulation layers. By adopting the first guiding inserting coil, thunder-strike current can be released in a single direction, so that the overvoltage protector can have the comparatively long air gap. And the lengthened air gap can guarantees that the overvoltage protector becomes insusceptible to abnormal conditions such as bird damage and the like, so that the operation of a power grid system can be ensured.

Description

Overvoltage protector

Technical field

The utility model relates to the lightning protection facility technical field, particularly relates to overvoltage protector.

Background technology

Overhead transmission line is due to its erection features, and the damage to crops caused by thunder suffered threatens larger, easily because thunderbolt causes tripping operation or broken string, the reliability of distribution system is had to larger impact, thereby the lightning protection measures of overhead transmission line is extremely important.

The main flow equipment of the lightning protection facility of overhead transmission line is overvoltage protection device at present; overvoltage protection device is arranged on the insulator place; between aerial condutor and draining ring, form air gap; draining ring is by zinc oxide arrester ground connection; air gap during lightning strikes between wire and draining ring is breakdown; zinc oxide arrester is low resistance; realize the thunder and lightning earial drainage; after lightning current passes through; by zinc oxide arrester, block power frequency continued flow; utilize air gap to avoid zinc oxide arrester to bear power-frequency voltage always, extend the life-span of overvoltage protection device.

But still there is certain defect in general overvoltage protector, air gap while guaranteeing lightning strikes due to needs between wire and draining ring can be breakdown by thunder-strike current, so the spacing between wire and draining ring is restricted can not be too large, and in actual use, lightning protection facility all needs to be arranged on outdoor, have unavoidably foreign object and enter into this air gap, bird for example, between wire and draining ring, resistance descends rapidly when having foreign object to enter, very possible airspace is punctured by the high-tension current of normal transmission on aerial condutor, puncture the safe operation that rear normal high-tension current is transferred to the whole network system of earth effect.

The utility model content

Based on this, be necessary to subject to for general overvoltage protector the problem that the abnormal conditions such as bird pest affect the network system safe operation, a kind of abnormal conditions such as bird pest that do not subject to are provided, can guarantee the overvoltage protector of network system operation.

A kind of overvoltage protector, comprise that guiding is rolled off the production line, insulating rod, current limiting element and connection gold utensil, and described guiding is rolled off the production line and comprised that the first guiding is rolled off the production line and the second guiding is rolled off the production line;

The end that described the second guiding is rolled off the production line is connected with an end of described current limiting element, the described current limiting element other end connects with the described gold utensil that is connected, the described connection gold utensil other end is fixed in described insulating rod, described the first guiding is rolled off the production line and is fixed in described insulating rod, described first guides the end link hollow wire that rolls off the production line, described first guides the other end that rolls off the production line to point to described second guides the other end that rolls off the production line, and form airspace with described the second guiding other end that rolls off the production line, the described guiding outside of rolling off the production line is coated with insulating barrier, described the first guiding is rolled off the production line and is guided the end rolled off the production line to draw in the cavity of described insulating barrier near described second, described the second guiding is rolled off the production line and is guided the end rolled off the production line exposed outside described insulating barrier near described first.

Therein in embodiment, described overvoltage protector also comprises fixedly gold utensil of the installation that can shaft tower connects, and described installation fixedly gold utensil one end is connected with described insulating rod.

In embodiment, described overvoltage protector also comprises wire clamp therein, and described wire clamp is fixed in described insulating rod, and described wire clamp rolls off the production line described the first guiding to be fixed in described insulating rod.

In embodiment, described overvoltage protector also comprises earth connection therein, described earth connection one end ground connection, and the other end of described earth connection connects with the described gold utensil that is connected.

In embodiment, described current limiting element is the drop-out type current-limiting element therein.

Above-mentioned overvoltage protector, adopt first to guide the end and second that rolls off the production line to guide the end rolled off the production line to form airspace, guide the skin that rolls off the production line to be coated with insulating barrier, the first guiding is rolled off the production line and is guided the end rolled off the production line to draw in the cavity that insulating barrier forms near second, when having thunderbolt to occur, the end that high-tension current rolls off the production line from the first guiding enters, because the first guiding skin that rolls off the production line is coated with insulating barrier, thunder-strike current can only roll off the production line and flow to the end rolled off the production line near the second guiding along the first guiding, and roll off the production line in this end points place first guiding, be to draw in the cavity that insulating barrier forms, when arriving herein, electric current can't puncture atmospherical discharges to the surrounding scattering, can only guide the sensing second of rolling off the production line to guide the direction electric discharge of the end that rolls off the production line namely to second, to guide the end that rolls off the production line to discharge towards first, the second guiding is rolled off the production line and guided near first the end rolled off the production line is exposed in air, exposed aerial part the second guiding is rolled off the production line can guide from first and is guided the electric current of emitting that rolls off the production line to puncture air.So discharge relatively and discharge with the exposed surrounding of wire in a direction owing to being all concentration of energy, the energy of formed objects can puncture longer airspace, so described overvoltage protector can arrange larger in its airspace with respect to operated by rotary motion has the lightning protection facility of airspace, when having foreign object to enter in this airspace, foreign object length with respect to airspace diminishes, the distance of the shortening airspace of degree also just is not easy the situation that occurs that airspace is breakdown greatly, so described overvoltage protector is a kind of abnormal conditions such as bird pest that do not subject to, can guarantee the lightning protection facility of network system operation.The lightning protection function that described overvoltage protector only comprises that guiding is rolled off the production line in addition, insulating rod, connection gold utensil and current limiting element are namely effectively realized; and directly adopt guiding to roll off the production line as the device of guiding thunder discharge and formation airspace; its structure is obviously simplified, thus described overvoltage protector be a kind of simple in structure, be convenient to installation and maintenance and can effectively realize lightning protection, anti-bird pest lightning protection facility.

The accompanying drawing explanation

Fig. 1 is the structural representation of described one of them embodiment of overvoltage protector;

Fig. 2 is the structural representation of described one of them embodiment of overvoltage protector.

Embodiment

As shown in Figure 1, a kind of overvoltage protector, comprise that guiding rolls off the production line 100, insulating rod 200, current limiting element 300 with is connected gold utensil 400, described guiding is rolled off the production line and 100 is comprised that the first guiding is rolled off the production line and 120 and second guide and roll off the production line 140;

A roll off the production line end of 140 of described the second guiding is connected with an end of described current limiting element 300, described current limiting element 300 other ends connect with the described gold utensil 400 that is connected, described connection gold utensil 400 other ends are fixed in described insulating rod 200, described the first guiding is rolled off the production line and 120 is fixed in described insulating rod 200, described first guides the 120 1 end link hollow wires that roll off the production line, described first guides 120 other ends that roll off the production line to point to described second guides 140 other ends that roll off the production line, and form airspaces with described the second guiding 140 other ends that roll off the production line, described guiding 100 outsides of rolling off the production line are coated with insulating barrier, described the first guiding is rolled off the production line and 120 near a roll off the production line end of 140 of described the second guiding, is drawn in the cavity of described insulating barrier, it is 140 exposed outside described insulating barrier near a roll off the production line end of 120 of described the first guiding that described the second guiding is rolled off the production line.

Above-mentioned overvoltage protector, adopt the first guiding roll off the production line end formation airspace of 140 of 120 1 ends and the second guiding of rolling off the production line, guide 100 skins that roll off the production line to be coated with insulating barrier, the first guiding is rolled off the production line and 120 near a roll off the production line end of 140 of the second guiding, is drawn in the cavity that insulating barrier forms, when having thunderbolt to occur, high-tension current enters from a roll off the production line end of 120 of the first guiding, because the first guiding 120 skins that roll off the production line are coated with insulating barrier, thunder-strike current can only roll off the production line and 120 flow near a roll off the production line end of 140 of the second guiding along the first guiding, and at this end points place the first guiding to roll off the production line 120 be to draw in the cavity that insulating barrier forms, when arriving herein, electric current can't puncture atmospherical discharges to the surrounding scattering, can only guide 120 sensings second of rolling off the production line to guide the direction electric discharge of 140 1 ends that roll off the production line namely to second, to guide 140 1 ends that roll off the production line to discharge towards first, it 140 is exposed in air near a roll off the production line end of 120 of the first guiding that the second guiding is rolled off the production line, exposed aerial part the second guiding is rolled off the production line can guide from first and is guided 120 electric currents of emitting that roll off the production line to puncture air.So discharge relatively and discharge with the exposed surrounding of wire in a direction owing to being all concentration of energy, the energy of formed objects can puncture longer airspace, so described overvoltage protector can arrange larger in its airspace with respect to operated by rotary motion has the lightning protection facility of airspace, when having foreign object to enter in this airspace, foreign object length with respect to airspace diminishes, the distance of the shortening airspace of degree also just is not easy the situation that occurs that airspace is breakdown greatly, so described overvoltage protector is a kind of abnormal conditions such as bird pest that do not subject to, can guarantee the lightning protection facility of network system operation.The lightning protection function that described overvoltage protector only comprises that guiding is rolled off the production line in addition, insulating rod, connection gold utensil and current limiting element are namely effectively realized; and directly adopt guiding to roll off the production line as the device of guiding thunder discharge and formation airspace; its structure is obviously simplified, thus described overvoltage protector be a kind of simple in structure, be convenient to installation and maintenance and can effectively realize lightning protection, anti-bird pest lightning protection facility.

As shown in Figure 2, therein in embodiment, described overvoltage protector also comprises fixedly gold utensil 500 of the installation that can be connected with shaft tower, and described installation fixedly gold utensil 500 1 ends is connected with described insulating rod 200.

Fixedly gold utensil is installed can be fixed on described overvoltage protector safety and stability on wire pole tower, guarantees the safety of power system operation.

As shown in Figure 2, in embodiment, described overvoltage protector also comprises wire clamp 600 therein, and described wire clamp 600 is fixed in described insulating rod 200, and described wire clamp 600 rolls off the production line described the first guiding 120 to be fixed on described insulating rod 200.

In the present embodiment, the wire clamp effect is that guiding is rolled off the production line and is stably fixed on insulating rod, guarantees described overvoltage protector normal operation.

As shown in Figure 2, in embodiment, described overvoltage protector also comprises earth connection 700 therein, described earth connection 700 1 end ground connection, and the other end of described earth connection 700 connects with the described gold utensil that is connected.

Earth connection by the lightning impulse current earial drainage to the earth.

The drop-out type current-limiting element is modal current limiting element in lightening protection installation; in the present embodiment current limiting element is elected as to the applicability that the drop-out type current-limiting element can effectively promote described overvoltage protector, also lowered to a certain extent the production cost of described overvoltage protector simultaneously.

The above embodiment has only expressed several execution mode of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.

Claims

1. an overvoltage protector, is characterized in that, comprises that guiding is rolled off the production line, insulating rod, current limiting element and connection gold utensil, and described guiding is rolled off the production line and comprised that the first guiding is rolled off the production line and the second guiding is rolled off the production line;

2. overvoltage protector according to claim 1, is characterized in that, also comprises fixedly gold utensil of the installation that can shaft tower connects, and described installation fixedly gold utensil one end is connected with described insulating rod.

3. overvoltage protector according to claim 1 and 2, is characterized in that, also comprises wire clamp, and described wire clamp is fixed in described insulating rod, and described wire clamp rolls off the production line described the first guiding to be fixed in described insulating rod.

4. overvoltage protector according to claim 1 and 2, is characterized in that, also comprises earth connection, described earth connection one end ground connection, and the other end of described earth connection connects with the described gold utensil that is connected.

5. overvoltage protector according to claim 1 and 2, is characterized in that, described current limiting element is the drop-out type current-limiting element.