A kind of lightning protection composite post insulator
Technical field
The present invention relates to a kind of post insulator, relate in particular to a kind of lightning protection composite post insulator.
Background technology
Existing lightning protection composite post insulator comprises insulator body, and insulator body comprises insulation mandrel, is located at the last gold utensil of insulation mandrel upper end, is located at the following gold utensil of insulation mandrel lower end; And be wrapped in the outer composite sheath of insulation mandrel; Last gold utensil is provided with cap and discharge ring, and upward cap material is a cast steel, and the discharge ring material is an aluminium alloy; Cause the discharge of going up between cap and the discharge ring through regular meeting; Influence is electrically connected performance increases eddy current loss, reduces the quality of power supply, serious threat the safe operation of power distribution network.
Summary of the invention
The objective of the invention is to overcome the defective of prior art and a kind of lightning protection composite post insulator is provided, this lightning protection composite post insulator has improved and is electrically connected performance and reduces eddy current loss, improves the quality of power supply.
The objective of the invention is to realize like this:
A kind of lightning protection composite post insulator of the present invention; Comprise insulation mandrel, be located at insulation mandrel upper end last gold utensil, be located at the following gold utensil of insulation mandrel lower end and be wrapped in insulation mandrel composite sheath outward; It also comprises cap, binding clip, insulating cover and striking cover, wherein:
Said upward cap is a umbrella-shaped structure, and is sheathed on the said outer rim that goes up gold utensil;
Said binding clip is assemblied in the top of cap, and by said insulating cover from its main header casing to the said cap of going up;
Said striking cover is sheathed on the said gold utensil down.
Above-mentioned a kind of lightning protection composite post insulator; Wherein, said binding clip is rotating wire clamp, comprises compressing member, is fixed on the left hold-down bolt of crown portion and the right hold-down bolt of spring is housed; One end of compressing member is provided with through hole; The other end is provided with the U type and buckles, and said compressing member passes the top that right hold-down bolt and matching fastener are assemblied in cap through its through hole, and left hold-down bolt passes that the U type is buckled and the fixing said compressing member of matching fastener.
Above-mentioned a kind of lightning protection composite post insulator, wherein, said upward cap and compressing member all adopt aluminium alloy to process.
Above-mentioned a kind of lightning protection composite post insulator, wherein, said striking cover is the turned welt structure.
The present invention compared with prior art has the following advantages:
1. the present invention adopts the integrated design of cap and discharge ring, and the compacting of whole employing aluminium alloy, goes up cap simultaneously and also adopts the umbrella-shaped structure design; Make integral product can reduce operation, reduce labour intensity, stop mistakes and omissions; Stop the discharge between last cap and the discharge ring, improved being electrically connected performance minimizing eddy current loss, improved the quality of power supply; Enlarged the distance of point of discharge and porcelain spare, reduced the damage of lightning current porcelain spare;
2. the present invention adopts the striking cover to replace original run-on tab, can adjust parallelly with last cap thus, reduces operation, reduces labour intensity, has also stopped the foreign matter winding simultaneously.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
To combine accompanying drawing that the present invention is described further below.
See also Fig. 1; Lightning protection composite post insulator of the present invention has been shown among the figure; It comprises insulation mandrel 1, is located at the last gold utensil 8 of insulation mandrel 1 upper end, is located at the following gold utensil 3 of insulation mandrel 1 lower end and is wrapped in the composite sheath outside the insulation mandrel 1; Insulation mandrel 1 adopts anti-acid pultrusion epoxy fibreglass rod to process, and has the mechanical strength height, anticorrosive, anti-embrittlement.Last gold utensil 8 adopts high-quality cast steel to process with following gold utensil 3, after handling through crimp technology, can be combined into perfect integral body with insulation mandrel 1.Mould with special-purpose wraps up high temperature silicon rubber on core body, process composite sheath.
Lightning protection composite post insulator of the present invention also comprises cap 2, binding clip 5, insulating cover 6 and striking cover 4, and last cap 2 is a umbrella-shaped structure, and is sheathed on the outer rim of gold utensil 8; Binding clip 5 is assemblied in the top of cap 2, and insulated cable 7 is pressed between this binding clip 5 and the last cap 2, and by insulating cover 6 from the supreme cap 2 of its main header casing; Striking cover 4 is sheathed on down on the gold utensil 3, and striking cover 4 forms discharging gap with last cap 2.The cover of striking simultaneously 4 is processed into the turned welt shape, forms an electric arc angle of divergence with last cap 2 discharge electrodes, reduces the damage of arc energy to the composite insulator overcoat.
Binding clip 5 comprises compressing member 51, be fixed in the left hold-down bolt (not drawing among the figure) at cap 2 tops and the right hold-down bolt 52 of spring is housed; One end of compressing member 51 is provided with through hole; The through hole that right hold-down bolt 51 passes compressing member 51 is connected with clamp nut; Compressing member 51 can horizontally rotate motion around right hold-down bolt 51, and the other end of compressing member 51 is provided with the U type and buckles, and left hold-down bolt passes this U type and buckles with clamp nut and be connected.
When installing at the scene, at first that insulator is rack-mount, and fix; Insulated conductor 7 is done local exposedization processing at compressing member 51 places, be placed on the recess of cap 2 to the exposed part of insulated conductor 7, rotatably compress part 51 left hold-down bolt is placed in its U type buckles; Through clamp nut that compressing member 51 is fixing; Make insulated conductor 7 be firmly fixed between compressing member 51 and the last cap 2, insulated conductor 7 installs like this, with insulating cover 6 from the supreme cap 2 of the main header casing of compressing member 51; Make insulated conductor 7 and last cap 2 be wrapped together, satisfy the requirement of the insulating of circuit.
Last cap 2, compressing member 51 all are to form with the aluminium alloy compacting, can realize being electrically connected fully with the exposed part (core) of insulated conductor 7.Like this; When lightning current passes through insulated conductor, can rapidly lightning current be guided to from the core of insulated conductor 7 on two discharge ends of cap 2, and lightning current discharged through the gap; Thereby reach the purpose of protection insulated conductor, prevent the insulated conductor lightning-caused breaking.
The present invention adopts the integrated design of cap 2 and discharge ring, and the compacting of whole employing aluminium alloy, goes up cap 2 simultaneously and also adopts the umbrella-shaped structure design; Make integral product can reduce operation, reduce labour intensity, stop mistakes and omissions; Stop the discharge between last cap and the discharge ring, improved being electrically connected performance minimizing eddy current loss, improved the quality of power supply; Enlarged the distance of point of discharge and porcelain spare, reduced the damage of lightning current porcelain spare.
Above embodiment only supplies to explain the present invention's usefulness; But not limitation of the present invention; The technical staff in relevant technologies field under the situation that does not break away from the spirit and scope of the present invention, can also make various conversion or modification; Therefore all technical schemes that are equal to also should belong to category of the present invention, should be limited each claim.