CN209804354U - composite pin insulator - Google Patents

Abstract

The utility model discloses a compound pin insulator, include the body of rod, sheath and set up the full skirt on the sheath, the full skirt includes the big full skirt of a plurality of and sets up the little full skirt between adjacent big full skirt, one of them at least be provided with the annular that the cross section is the chevron on the little full skirt, the bottom of annular is provided with the small opening with external intercommunication, the utility model discloses in applied the cross section that sets up on the little full skirt and be the annular of chevron, this annular can prevent effectively that liquid level and dust impurity etc. from forming continuous surface on little full skirt, has just also avoided pin insulator surface to form continuous conductive film, has strengthened pin insulator's antifouling sudden strain of a muscle performance greatly, is favorable to guaranteeing the safe operation of electric wire netting.

Description

Composite pin insulator

Technical Field

The utility model relates to an insulator field, concretely relates to compound pin insulator.

Background

The composite pin insulator is a commonly used component in an electric power system, is arranged between conductors with different electric potentials or a conductor and a grounding component, is used for resisting voltage and mechanical stress, can increase creepage distance and plays an important role in a power transmission line, but the existing composite pin insulator mostly comprises a core rod, a silicon rubber sheath and a basic umbrella skirt, although the creepage distance is increased, the anti-pollution flashover capability is weak, in the daily use process, dust impurities can be accumulated on the surfaces of the umbrella skirt and the sheath, soluble substances in the dust impurities are dissolved in water in wet weather such as rainy days or dew days, a conductive film is formed on the surfaces of the umbrella skirt and the sheath, the pollution flashover phenomenon is easy to occur, the insulating property of the insulator is obviously reduced, and the safe operation of a power grid is not facilitated.

SUMMERY OF THE UTILITY MODEL

To the problem that exists among the background art, the utility model aims to provide a compound pin insulator, it has effectively solved the problem that exists among the background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

The utility model provides a composite pin insulator, includes the body of rod, sheath and sets up the full skirt on the sheath, the full skirt includes the big full skirt of a plurality of and sets up the little full skirt between adjacent big full skirt, one of them at least be provided with the annular that the cross section is the chevron shape on the little full skirt, the bottom of annular is provided with the small opening with external intercommunication.

Furthermore, the two ends of the rod body are fixedly provided with hardware fittings for installation.

furthermore, the rod body and the sheath are respectively made of an epoxy glass fiber rod and silicon rubber, and the umbrella skirt is also made of silicon rubber.

Further, little umbrella skirt includes first skirt ring and sets firmly second skirt ring and third skirt ring on first skirt ring, correspond on first skirt ring and the third skirt ring be provided with sheath matched with through-hole, first skirt ring has been seted up first annular on one side of second skirt ring and third skirt ring, second skirt ring on one side of first skirt ring and third skirt ring have been seted up second annular and third annular respectively on one side of first skirt ring of orientation, have between second skirt ring and the third skirt ring with the ring form clearance of the ring form that first annular is linked together, first annular, second annular, third annular and ring form clearance constitute jointly the annular that the cross section is the chevron form.

further, the second skirt ring and the third skirt ring are both arranged on the first skirt ring in a bonding mode.

Further, the opening interval of the annular gap is not less than 1 cm.

further, the leakage hole is arranged obliquely downwards.

the utility model discloses following beneficial technological effect has:

the utility model discloses in applied the cross section that sets up on little umbrella skirt and be the annular of chevron, this annular can prevent effectively that liquid level and dust impurity etc. from forming continuous surface on little umbrella skirt, has just also avoided pin insulator surface to form continuous conductive film, has strengthened pin insulator's antifouling sudden strain of a muscle performance greatly, is favorable to guaranteeing the safe operation of electric wire netting, this application simple structure and low cost are fit for using widely.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a right side view of a small umbrella skirt according to an embodiment of the present invention;

FIG. 3 is a sectional view taken along line A-A in FIG. 2;

FIG. 4 is an enlarged view of a portion of FIG. 3 at B;

Fig. 5 is a right side view of a first skirt ring of an embodiment of the present invention;

Fig. 6 is a left side view of a second skirt ring of an embodiment of the present invention;

Fig. 7 is a left side view of a third skirt ring according to an embodiment of the present invention.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

as shown in fig. 1-7, the composite pin insulator described in this embodiment includes a rod body 1, a sheath 2 and a shed adhered to the sheath 2, the sheath 2 is sleeved outside the rod body 1, the shed includes a plurality of large sheds 3 and small sheds 4 disposed between adjacent large sheds 3, at least one small shed 4 is provided with a circular groove 5 having a cross section in a chevron shape, the bottom of the circular groove 5 is provided with a leak 6 communicated with the outside, the leak 6 can discharge rain and snow entering the circular groove 5, so as to prevent rain and snow from accumulating in the circular groove 5 and affecting the insulation performance, and in addition, the leak 6 is disposed obliquely downward to facilitate the outflow of rain and snow.

The two ends of the rod body 1 are provided with hardware fittings 7 for installation, the rod body 1 and the sheath 2 are respectively made of epoxy glass fiber rods and silicon rubber, and the umbrella skirt is also made of silicon rubber.

The small umbrella skirt 4 comprises a first skirt ring 8, a second skirt ring 9 and a third skirt ring 10 which are bonded on the first skirt ring 8, through holes 11 which are matched with the sheath 2 are correspondingly arranged on the first skirt ring 8 and the third skirt ring 10, the first skirt ring 8 and the third skirt ring 10 are sleeved on the sheath 2 through the through holes 11 and are bonded and fixed, a first annular groove 12 is arranged on one side of the first skirt ring 8 facing the second skirt ring 9 and the third skirt ring 10, a second annular groove 13 and a third annular groove 14 are respectively arranged on one side of the second skirt ring 9 facing the first skirt ring 8 and one side of the third skirt ring 10 facing the first skirt ring 8, an annular gap 15 communicated with the first annular groove 12 is arranged between the second skirt ring 9 and the third skirt ring 10, namely, the second skirt ring 9 and the third skirt ring 10 are not contacted, the first annular groove 12, the second annular groove 13, the third annular groove 14 and the annular gap 15 jointly form an annular ring-shaped 5 with the cross section in the shape of a Chinese character 'shan' shape, the opening distance of the annular gap 15 is not less than 1cm, preferably 1-2cm, so that the separation effect of the annular groove 5 on the outer surface of the small umbrella skirt 4 is effectively ensured.

The working principle of the embodiment is as follows:

The large umbrella skirt 3 is arranged on the two sides of the small umbrella skirt 4, wind wrapped with dust and impurities is blocked by the large umbrella skirt 3, so that the wind is not easy to blow to the surface of the small umbrella skirt 4, part of the dust and impurities blown to the surface of the small umbrella skirt 4 are attached to the surface of the small umbrella skirt 4, but cannot enter the annular groove 5 with the E-shaped cross section through the annular gap 15 and completely cover the inner surface of the annular groove 5, so that soluble substances in the dust and impurities are effectively prevented from being dissolved in water to form a continuous surface on the small umbrella skirt 4 in high-humidity weather such as rain, snow, fog and the like, a continuous conductive film is prevented from being formed on the surface of the pin insulator, and the pollution flashover resistance of the pin insulator is.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims (7)

1. The utility model provides a compound pin insulator, includes the body of rod, sheath and sets up the full skirt on the sheath, the full skirt includes the big full skirt of a plurality of and sets up the umbrella skirt between adjacent big full skirt, its characterized in that, wherein at least one be provided with the annular that the cross section is the chevron shape on the umbrella skirt, the bottom of annular is provided with the small opening with external intercommunication.

2. The composite pin insulator of claim 1, wherein the two ends of the rod body are fixedly provided with a fitting for installation.

3. The composite pin insulator of claim 1, wherein the rod body and the sheath are made of epoxy glass fiber rod and silicone rubber, respectively.

4. The composite pin insulator of claim 1, wherein the small umbrella skirt comprises a first skirt ring, and a second skirt ring and a third skirt ring which are fixedly arranged on the first skirt ring, through holes matched with the sheath are correspondingly formed in the first skirt ring and the third skirt ring, a first annular groove is formed in one side, facing the second skirt ring and the third skirt ring, of the first skirt ring, a second annular groove and a third annular groove are respectively formed in one side, facing the first skirt ring, of the second skirt ring and one side, facing the first skirt ring, of the third skirt ring, annular gaps communicated with the first annular groove are formed between the second skirt ring and the third skirt ring, and the annular grooves with the E-shaped cross sections are formed by the first annular groove, the second annular groove, the third annular groove and the annular gaps.

5. The composite pin insulator of claim 4, wherein the second skirt ring and the third skirt ring are adhesively attached to the first skirt ring.

6. The composite pin insulator according to claim 4, wherein the opening pitch of the annular gap is not less than 1 cm.

7. the composite pin insulator of claim 1, wherein the weep hole is disposed diagonally downward.