CN201536035U

CN201536035U - Tensioning type composite universal insulator

Info

Publication number: CN201536035U
Application number: CN2009200294705U
Authority: CN
Inventors: 唐苑雯
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-07-20
Filing date: 2009-07-20
Publication date: 2010-07-28
Anticipated expiration: 2019-07-20

Abstract

The utility model discloses a tensioning type composite universal insulator which is provided with a tensioning insulator (1) and is characterized in that a space crossing hole of the tensioning insulator (1) is internally provided with U-shaped bolts (2, 3) and is tightly connected with a terminal pad (6) by a nut (9); and the exteriors of the tensioning insulator, the U-shaped bolts and the terminal pad are covered with a composite insulating layer (4). The insulator has the advantages that the inner core of the insulator adopts the structure type that the tensioning insulator is combined with the U-shaped bolts and the terminal pad in a matching way, and solves the problem of insufficient stretching resistance. In addition, as the structure type of the terminal pad is connected, the arbitrary arrangement of the terminal pad becomes possible; two terminal pads can be butted with each other; in addition, the series connection mode that two ends of the insulator adopt two terminal pads and a terminal pad in the middle is connected by the U-shaped bolts in another group is adopted; and therefore, the insulator with the structure can replace insulators with various structures such as suspension type disc insulators, post insulators, rod insulators, insulated cross arms and the like and is applied to various of power supply occasions.

Description

A kind of tensioning-type compound all-purpose insulator

Technical field

The invention belongs to the insulator that uses in the electric power power transmission and transformation system, definite saying is a kind of tensioning-type compound all-purpose insulator.

Background technology

The insulator that uses in the present high-low pressure power transmission and transformation system, more advanced is silicon rubber compound insulator, inside is pottery or glass, the appearance composite silicone rubber.But no matter be disc suspension tool edge, or cylindricality, rod insulator and insulator crossarm, because its design feature has separately determined it to bear tensile load.Yet, the resistance to tension of pottery, glass is less, with the conventional ceramic is example, its tensile strength is generally at 26～36MPa, and its compression strength is generally at 460～680MPa, and the tensile strength of glass is also very for a short time to be generally: 40～80Mpa, and the compression strength of glass is higher, be generally 600～1200MPa, this shows that pottery and its compression strength of glass are much higher than tensile strength.In order to improve the practical application effect of insulator, strengthen its practical reliability, give full play to the high insulating property and the high compressive property of ceramic material, the present inventor has done research in earnest, has proposed goal of the invention of the present invention.

Summary of the invention

Goal of the invention of the present invention is in order to overcome defective and not enough put forward of present insulator based on the organization plan that bears pulling force.A kind of tensioning-type compound all-purpose insulator promptly is provided.

Technical solution of the present invention is to realize like this, this kind tensioning-type compound all-purpose insulator, it has strain insulator [1], it is characterized in that in the space crossed hole of strain insulator [1], having U-bolt [2] and [3], be fastenedly connected by nut [9] and terminal pad [6], coat composite insulation layer [4] in the outside of strain insulator and U-bolt and terminal pad.

Beneficial technical effects of the present invention is: the inner core of insulator has adopted strain insulator to cooperate the version of U-bolt and terminal pad combination, make on the insulator suffered pulling force by the combination cleverly of U-bolt and strain insulator and terminal pad, become and act on two U-bolts with respect to the pressure between two tensions of strain insulator hole.On structure, glass, the hypodynamic knotty problem of ceramic insulator tension have for a long time been solved effectively.And, owing to adopted the version of terminal pad, make insulator be assembled into arbitrarily for may, can adopt two terminal pads to dock mutually, also can adopt two terminal pads in two ends, the mode that is connected in series that a middle terminal pad directly connects with the U-bolt of another group makes the insulator of this structure can replace the insulator of various versions such as suspension type disc insulator, post insulator, rod insulator, insulator crossarm to be applied to the requirement of various different power supply occasions.

Description of drawings

Accompanying drawing 1 is a structure principal section schematic views of the present invention, accompanying drawing 2 is vertical views of the broken section of accompanying drawing 1, accompanying drawing 3 is version figure that two insulators of the present invention connect by stud, accompanying drawing 4 is version figure that two insulators of the present invention connect by a terminal pad, Fig. 5 is the schematic diagram that two terminal pads connect back insulator series connection, Fig. 6 is that two insulators connect back insulator series connection schematic diagram with a terminal pad, Fig. 7 is the topology view of terminal pad, also shows the through hole that terminal pad connects as flange in the accompanying drawing 7.Accompanying drawing 8 is one section and has the construction of wire rope schematic diagram that the screw thread other end has end socket.As can be known from Fig. 5 and Fig. 6, the change of such connected mode makes insulator variation also take place in series connection on the length, i.e. insulator unit of every increase series connection in Fig. 6, and then length is than the about thickness that shortens a terminal pad of the structure among Fig. 5.Sequence number in the accompanying drawings is described as: 1, strain insulator, 2,3, U-bolt, 4, composite insulation layer, 5, full skirt, 6, terminal pad, 7, gold utensil, 8,

gold utensil

2,9, nut, 10, groove, 11, seamed edge, 12, stud.

Embodiment

Below in conjunction with the embodiment that provides in the accompanying drawing, structure of the present invention and use are elaborated.

Embodiment 1, the attached Fig. 1 and 2 of reference, this kind tensioning-type compound all-purpose insulator, it has strain insulator [1], it is characterized in that in the space crossed hole of strain insulator [1], having U-bolt [2] and [3], be fastenedly connected by nut [9] and terminal pad [6], coat composite insulation layer [4] in the outside of strain insulator [1] and U-bolt [3], [4] and terminal pad [6].

Embodiment 2, the attached Fig. 1 and 2 of reference, the tensioning-type compound all-purpose insulator on the basis of embodiment 1, the outer surface of the composite insulation layer that it is characterized in that [4] have the outstanding full skirt of arranging [5].

Embodiment 3, with reference to accompanying drawing 1,2 and accompanying drawing 7, the center of terminal pad [6] has screwed hole, the outside of screwed hole of centre has the groove [10] of a circle, its upper and lower surface respectively has two step through-holes.

Embodiment 4, the attached Fig. 1 and 2 of reference, tensioning-type compound all-purpose insulator on the basis of embodiment 1, it is characterized in that said U-bolt can be the U-bolt of a rigidity, also can be the flexible cable that two ends have screw thread, perhaps be exactly the steel wire rope that one section two ends has connecting thread in brief.Also can be that an end has the steel wire rope that the end socket other end has screw thread, shown in accompanying drawing 8.

Embodiment 5, the attached Fig. 1 and 2 of reference, the tensioning-type compound all-purpose insulator on the basis of embodiment 1 is characterized in that said composite insulation layer [4] and full skirt [5] are one-time formed silastic materials.That is to say, under less supply power voltage, can adopt the structure of simplification, promptly composite insulation layer and full skirt merge the structure that becomes one.Be convenient to processing and manufacturing.

Embodiment 6, the attached Fig. 1 and 2 of reference, tensioning-type compound all-purpose insulator on the basis of embodiment 1, it is characterized in that said composite insulation layer [4] is the composite insulation layer of epoxy resin material cast molding, and full skirt [5] is the full skirt of silastic material sulfidization molding.Such structure is used proper down for higher power transmission and transformation press strip spare.Promptly earlier strain insulator is connected as one by U-bolt and terminal pad, pour into a mould, be solidified into one with macromolecular materials such as epoxy resin, expoxy glass resins then, then, again outer surface is made into full skirt by silicon rubber vulcanization technology.

Embodiment 7, with reference to attached Fig. 1 and 2, the tensioning-type compound all-purpose insulator on the basis of embodiment 1 is characterized in that on the terminal pad [6] at said two ends respectively by gold utensil that is threaded [7] and gold utensil [8].Gold utensil can adopt through the rotating insulator hardware of redesign, pillar insulator gold utensil, cross arm insulator gold utensil, draw ring etc.So just can constitute according to different needs one can practical application the insulator monomer.

Embodiment 8, with reference to accompanying drawing 1 and accompanying drawing 2 and accompanying drawing 3, the tensioning-type compound all-purpose insulator on the basis of embodiment 1, present embodiment are a kind of tandem compound structures of insulator.Promptly the center screw of two compound all-purpose insulators terminal pad [6] by separately is by stud [12] insulator of connecting with center screw stressed joint formation.Perhaps terminal pad as shown in Figure 7, two terminal pads connect by bolt as the valve orchid.Can install the elastic sealing gasket of a silicon rubber in the groove of center screw outside additional, to improve its assembling and insulation property.By such method, many group insulator monomers of can connecting according to actual needs are to adapt to different use occasions.Profile after two monomer series-connected combinations of insulator is with reference to accompanying drawing 5.

Embodiment 9, with reference to accompanying drawing 1 and accompanying drawing 2 and accompanying drawing 4, tensioning-type compound all-purpose insulator on the basis of embodiment 1, present embodiment is analogous to embodiment 8, but two compound all-purpose insulators are that the U-bolt by a terminal pad [6] and another strain insulator connects and composes the series connection insulator.Profile after two monomer series-connected combinations of insulator is with reference to accompanying drawing 6.

Embodiment 10, the attached Fig. 1 and 2 of reference, the external form of said strain insulator [1] can be with reference to the regulation of GB/T1386.2-1997 standard.But bigger distinguishing characteristics is arranged with standard.When small voltage is worked down, can be with reference to the cross section structure shape of this standard design structure, but when working down for big voltage conditions, because variation has all taken place in the condition of each side, particularly consider the electrical characteristic of compound cross-section, therefore need to increase the seamed edge quantity in cross section, general, the cross section has 4-24 uniform seamed edge [11], just can satisfy the actual needs of all kinds of insulators under the present various voltage.For some special requirements, can suitably increase the quantity of seamed edge, for example: seamed edge increases to 48 from 24, and this simple seamed edge structure can realize on ceramic process easily.

Claims

1. tensioning-type compound all-purpose insulator, it has strain insulator [1], it is characterized in that in the space crossed hole of strain insulator [1], having U-bolt [2] and [3], be fastenedly connected by nut [9] and terminal pad [6], coat composite insulation layer [4] in the outside of strain insulator and U-bolt and terminal pad.

2. according to the described a kind of tensioning-type compound all-purpose insulator of claim 1, it is characterized in that the outer surface of said composite insulation layer [4] has the outstanding full skirt of arranging [5].

3. according to the described a kind of tensioning-type compound all-purpose insulator of claim 1, it is characterized in that the center of said terminal pad [6] has screwed hole, the outside of screwed hole of centre has the groove [10] of a circle, and its upper and lower surface respectively has two step through-holes.

4. according to the described a kind of tensioning-type compound all-purpose insulator of claim 1, it is characterized in that said U-bolt is the flexible cable that two ends have screw thread, or an end has the steel wire rope that the end socket other end has screw thread.

5. according to the described a kind of tensioning-type compound all-purpose insulator of claim 1, it is characterized in that said composite insulation layer [4] and full skirt [5] are one-time formed silastic materials.

6. according to the described a kind of tensioning-type compound all-purpose insulator of claim 1, it is characterized in that said composite insulation layer [4] is the composite insulation layer of epoxy resin material cast molding, and full skirt [5] is the full skirt of silastic material sulfidization molding.

7. according to the described a kind of tensioning-type compound all-purpose insulator of claim 1, it is characterized in that on the terminal pad [6] at said two ends respectively by gold utensil that is threaded [7] and gold utensil [8].

8. according to the described a kind of tensioning-type compound all-purpose insulator of claim 1, the center screw that it is characterized in that the terminal pad [6] of said two compound all-purpose insulators by separately is equipped with stressed joint or is become flange form to be connected mutually by the through hole on the terminal pad [6] by stud [12] and center screw, constitutes the series connection insulator.

9. according to the described a kind of tensioning-type compound all-purpose insulator of claim 1, it is characterized in that said two compound all-purpose insulators connect and compose the series connection insulator by the U-bolt of a terminal pad [6] and another strain insulator.

10. according to the described a kind of tensioning-type compound all-purpose insulator of claim 1, it is characterized in that the external form cross section of said strain insulator [1] has 4-24 uniform seamed edge [11].