CN209708728U - A kind of composite insulator - Google Patents

Abstract

The utility model discloses a kind of composite insulators, it includes plug and rubber umbrella sheath, rubber umbrella sheath forms a groove in inside, groove forms open column shape space structure and in the open column shape space embedded with insulation porcelain knob on the inside of rubber umbrella sheath, and coupling agent is coated between insulation porcelain knob and rubber umbrella sheath；And the porcelain knob that insulate is hollow porcelain knob, plug is threaded through in the insulation porcelain knob, and stretches out rubber umbrella sheath respectively at both ends, and the both ends stretched out respectively correspond the high-voltage end and low-pressure end of plug, and are respectively fixed with corresponding fitting in end.The utility model designs inside ensuring mechanical stability and the electric property in insulator by reasonable structure, to improve the operation stability of product.

Description

A kind of composite insulator

Technical field

The utility model relates to the composite insulator technologies in technical field of electricity, and in particular to a kind of composite insulator.

Background technique

Insulator is the essential a part of ultra-high-tension power transmission line as a kind of special insulation control, is usually wrapped Include multiple several plate-likes made of glass, ceramics or other insulating polymeric materials or umbrella stacking insulator.And In insulator, composite insulator is because use silicon rubber as composite, light-weight, high mechanical strength, and traditional Porcelain and glass insulator are compared, and can greatly reduce branch line shaft tower weight and tower head size, and UHV transmission is greatly lowered The cost of line project；Operating experience is also shown that composite insulator has excellent anti-pollution simultaneously, substantially may be used in operation It realizes non-maintaining, a large amount of human and material resources, financial resources, energy can be saved, operation and maintenance cost is low.Therefore, in recent years no matter from skill Art angle still economically considers, on UHV transmission line, composite insulator usage amount substantially beyond tradition Porcelain, glass insulator.

But in the prior art, composite insulator is unreasonable due to designing during actual use, caused by filthy External insulation accident be higher by when being designed than initial stage it is very much, some build up put into operation shortly need to take a large amount of subsequent tune climb and Remedial measure loads the electricity on composite insulator especially in the extra high voltage line that some working voltages reach ± 1000kV Field intensity is bigger, and axial electric field is unevenly distributed, these all seriously affect the runnability of composite insulator, accelerates compound inslation Sub- aging speed cannot achieve the non-maintaining effect of transmission line of electricity；Meanwhile the composite insulator in extra high voltage line is usual Length, size are larger, and weight causes transporting and installing up to 100kg or more and composite insulator material reason itself In there are many difficulties, under the influence of the severe environmental conditions such as heavy pollution, icing, it is subsequent transmission line of electricity but will to be greatly increased Maintenance work difficulty.

Therefore, aiming at the shortcomings in the prior art, it is urgent to provide a kind of high mechanical strength, have a safety feature, stability and The excellent composite insulator of service life.

Summary of the invention

The technical issues of the utility model is solved is to provide a kind of composite insulator, to solve in above-mentioned technical background Defect.

The technical problem solved by the utility model is implemented by the following technical solutions:

A kind of composite insulator, including plug and rubber umbrella sheath, the rubber umbrella sheath are formed in inside One groove, the groove form that two end cross-sectional areas are small, and intermediate umbrella section is set on the length direction on the inside of rubber umbrella sheath Sectional area big open column shape space structure forms the insulation porcelain knob to match with groove size in the groove, and in institute It states and is coated with coupling agent between insulation porcelain knob and the rubber umbrella sheath；And the insulation porcelain knob is hollow porcelain knob, the core Stick is threaded through in the insulation porcelain knob, and stretches out rubber umbrella sheath respectively at both ends, and the both ends stretched out respectively correspond plug High-voltage end and low-pressure end, and corresponding fitting is respectively fixed in end.

As further limiting, the middle position of the groove is open column shape structure, and at open column shape structure both ends For hollow frustum structure, two end cross-sectional areas are small to be formed in the inside of rubber umbrella sheath, and it is big that intermediate umbrella section sets sectional area Open column shape space structure.

As further limiting, the middle position of the groove is open column shape structure, and at open column shape structure both ends For hollow variable diameter step structure, to be formed in the inside of rubber umbrella sheath, two end cross-sectional areas are small, and intermediate umbrella section sets sectional area Big open column shape space structure.

As further limiting, corresponding intermediate umbrella section sets the big sections inner side interval setting of sectional area on the inside of the groove There are multiple annular grooves, and is filled with epoxy resin/modification silicon nitride composite material ring in the annular groove, and as substitute technology side Case, the insulation porcelain knob that can also be matched in a groove embedded with a groove and the annular groove.

As further limiting, the plug is epoxy resin fiberglass stick.

As further limiting, the rubber umbrella sheath is that the high-temperature silicon disulfide rubber full skirt of integral injection molding protects Set.

As further limiting, the fitting for being fixed on the high-voltage end of the plug is bulb fitting, and is fixed on the core The fitting of the low-pressure end of stick is ball-and-socket fitting.

The utility model has the advantages that the utility model improves the rubber umbrella sheath of composite insulator, by opening on the inside of it Slot is simultaneously embedded in the mode of hollow insulation porcelain knob to improve the overall structure of product, in the machinery for the internal structure for guaranteeing insulator Electric property is improved while stability, reduces the electric field strength of itself, and axial electric field is made to be evenly distributed, compound rubber Umbrella sheath can optimize pneumatic resistance and product surface hydrophobicity in insulator surface, especially link position, reduce filthy heap Product, and the hydrophobicity and excellent anti-pollution performance of ceramic material excellent mechanical strength and silicon rubber are organically combined one It rises, so that composite insulator has good environmental resistance, non-aging, long service life.

Detailed description of the invention

Fig. 1 is the schematic diagram of the preferred embodiment of the utility model.

Fig. 2 is the cross-sectional detail figure that the end umbrella section of Fig. 1 is set.

Fig. 3 is the cross-sectional detail figure that the end umbrella section of embodiment two is set.

Wherein: 1, ball-and-socket fitting；2, plug；3, rubber umbrella sheath；4, bulb fitting；5, gamp section；6, umbellule section；7, Epoxy resin/modification silicon nitride composite material ring；8, insulate porcelain knob.

Specific embodiment

In order to be easy to understand the technical means, creative features, achievement of purpose, and effectiveness of the utility model, under Face combines and is specifically illustrating, and the utility model is further described.

Referring to the preferred embodiment of a kind of composite insulator of Fig. 1, Fig. 2, in the present embodiment, composite insulator includes ring The molding plug 2 of oxygen plexiglas fibrous material, the plug 2 are threaded through in the centre bore of rubber umbrella sheath 3, and 2 liang of plug End extends respectively into the outer end of rubber umbrella sheath 3, and in the high-voltage end connecting ball head fitting 4 of the plug, the company of low-pressure end It receives nest fitting 1.

Rubber umbrella sheath 3 is the high-temperature silicon disulfide rubber umbrella sheath of integral injection molding, and outside spacers are provided with Multiple unit sections, each of which unit section include a gamp section 5 and two umbellule sections 6；The inside of rubber umbrella sheath 3 then A groove is formed, the both ends of the groove are hollow frustum structure, and correspond to intermediate umbrella section and be set to open column shape space knot The bottom of structure, hollow frustum structure division is consistent with open column shape space structure part internal diameter and is linked together；It is right on the inside of groove It answers intermediate umbrella section to set the big sections inner side of sectional area and is arranged at intervals with multiple annular grooves, be filled with epoxy resin/modification in annular groove Silicon nitride composite material ring 7, epoxy resin/modification silicon nitride composite material ring 7 stretch out annular groove medial surface, and epoxy resin/ It is formed and groove and epoxy resin/modification silicon nitride composite wood on the inside of modified silicon nitride composite material ring 7 and groove The insulation porcelain knob 8 that material 7 extension size of ring matches, which is hollow knob insulator, and is passed through in intermediate position of opening Plug 2, and insulation porcelain knob 8, epoxy resin/modification silicon nitride composite material ring 7 and rubber umbrella sheath 3 groove on the inside of it Between be coated with coupling agent.

And in another embodiment, ring groove position unshaped epoxy resin/modification silicon nitride composite material ring 7, but Groove location straight forming and groove and the consistent insulation porcelain knob 8 with torus knot of annular groove size, and with torus knot to epoxy Resin/modified silicon nitride composite material ring 7 is substituted to reduce technology difficulty.

It in the embodiment shown in fig. 3, is the alternate embodiments for fully considering cost of manufacture and technology difficulty, the program Technical conditions under, the middle position of groove is open column shape structure, and is hollow variable diameter step at open column shape structure both ends Structure, with small in the inside of rubber umbrella sheath 3 two end cross-sectional areas of formation, it is empty that intermediate umbrella section sets the big open column shape of sectional area Between structure, and the porcelain knob 8 that insulate is consistent with the groove size, and is inlaid in the open column shape space structure.

Basic principles, main features, and advantages of the present invention has been shown and described above.Current row Industry it will be appreciated by the skilled person that the purposes of these embodiments is merely to illustrate the utility model and is not intended to limitation this is practical new The protection scope of type.In addition, it should also be understood that, for the ordinary skill in the art, it is possible to understand that do not departing from this reality It is practical with these embodiments can be carried out with a variety of change, modification, replacement and modification in the case where novel principle and spirit Novel range is defined by the appended claims and the equivalents thereof.

Claims (9)

1. a kind of composite insulator, including plug and rubber umbrella sheath, which is characterized in that including the rubber umbrella sheath Side forms a groove, and it is small that the groove forms two end cross-sectional areas on the length direction on the inside of rubber umbrella sheath, intermediate Umbrella section sets the big open column shape space structure of sectional area, forms the insulation porcelain to match with groove size in the groove Column, and coupling agent is coated between the insulation porcelain knob and the rubber umbrella sheath；And the insulation porcelain knob is hollow porcelain Column, the plug are threaded through in the insulation porcelain knob, and stretch out rubber umbrella sheath respectively at both ends, and the both ends stretched out are right respectively The high-voltage end and low-pressure end of plug are answered, and is respectively fixed with corresponding fitting in end.

2. composite insulator according to claim 1, which is characterized in that the middle position of the groove is open column shape knot Structure, and hollow frustum structure is set as at open column shape structure both ends.

3. composite insulator according to claim 1, which is characterized in that the middle position of the groove is open column shape knot Structure, and be hollow variable diameter step structure at open column shape structure both ends.

4. composite insulator according to claim 1, which is characterized in that corresponding intermediate umbrella section, which is set, on the inside of the groove cuts The big sections inner side of area is arranged at intervals with multiple annular grooves.

5. composite insulator according to claim 4, which is characterized in that be filled with epoxy resin/modification in the annular groove Silicon nitride composite material.

6. composite insulator according to claim 4, which is characterized in that in the groove embedded with groove with And the insulation porcelain knob that the annular groove matches.

7. composite insulator according to claim 1, which is characterized in that the plug is epoxy resin fiberglass stick.

8. composite insulator according to claim 1, which is characterized in that the rubber umbrella sheath is integral injection molding High-temperature silicon disulfide rubber umbrella sheath.

9. composite insulator according to claim 1, which is characterized in that the fitting for being fixed on the high-voltage end of the plug is Bulb fitting；The fitting for being fixed on the low-pressure end of the plug is ball-and-socket fitting.