Polymeric crystalline silicon post insulator

Abstract

The utility model discloses a polymerized crystalline silicon post insulator, which comprises a fitting, a core rod and an insulator sleeve, the bottom of the fitting is provided with external threads, the top of the fitting is provided with a fixing hole, the bottom end of the core rod extends into the fixing hole, and the insulator sleeve wraps the upper part of the fitting and the core rod. The top of the insulator sleeve is recessed downwards to form a groove used for supporting a cable, a first umbrella skirt sleeve and a plurality of second umbrella skirt sleeves are arranged on the insulator sleeve, the first umbrella skirt sleeve is located at the uppermost portion, and the second umbrella skirt sleeves are located below the first umbrella skirt sleeve and are arranged at intervals from top to bottom. And the first umbrella skirt sleeve, the second umbrella skirt sleeve and the insulator sleeve are integrally formed by a polymerized crystalline silicon material. According to the utility model, the hardware fitting is only arranged at the bottom end, and the groove is directly arranged at the top of the insulator sleeve to fix the cable, so that the use of one hardware fitting is reduced, the overall manufacturing cost of the insulator is reduced, and the manufacturing of the insulator is also facilitated.

Description

Technical Field

[0001] The utility model relates to a polycrystalline silicon post insulator, belonging to the technical field of power transmission. Background Art

[0002] A post insulator is a tool for fixing cable lines in power transmission. During use, the bottom end of the post insulator is fixed on the cross arm of a utility pole. The structure of the existing post insulator is disclosed in the Chinese utility model patent with the authorization publication number CN220252940U. It includes a first fitting, a second fitting, a core rod, and a sheath. The first fitting and the second fitting are respectively installed at both ends of the core rod, and the sheath wraps around the core rod. The sheath includes a plurality of first umbrella skirts, multiple groups of second umbrella skirts, and a plurality of connecting sleeves. Each group of second umbrella skirts includes more than one second umbrella skirt unit. A group of second umbrella skirts is arranged between two adjacent first umbrella skirts. The second umbrella skirt unit is provided with a plurality of notches along the circumferential direction. The first umbrella skirt and the second umbrella skirt unit, as well as between two adjacent second umbrella skirt units, are all connected by connecting sleeves. For the insulator disclosed in the above patent, fittings are provided at both ends of the core rod. On the one hand, the cost of the fittings is higher than that of polycrystalline silicon, making it difficult to effectively reduce the cost of the entire insulator. On the other hand, with two fittings, before casting polycrystalline silicon, the fittings need to be installed at both ends of the core rod respectively, and the two fittings and the core rod in the mold require a relatively high structure for the mold. Therefore, the manufacture of the entire insulator is relatively more complex. Summary of the Invention

[0003] The purpose of the utility model is to provide a polycrystalline silicon post insulator to solve the technical defect of high manufacturing cost due to fittings being provided at both the top and bottom ends of the post insulator in the prior art.

[0004] To solve the above problems, the technical solution adopted by the utility model is: a polycrystalline silicon post insulator, including a fitting, a core rod, and an insulator sleeve. The bottom of the fitting is provided with an external thread for fixing on the cross arm of a utility pole during use. A fixing hole is opened at the top of the fitting. The bottom end of the core rod extends into the fixing hole. The insulator sleeve wraps around the upper part of the fitting and the core rod. A groove for supporting the cable line is formed by downward depression at the top of the insulator sleeve. One first umbrella skirt sleeve and a plurality of second umbrella skirt sleeves are provided on the insulator sleeve. The first umbrella skirt sleeve is located at the topmost. The plurality of second umbrella skirt sleeves are located below the first umbrella skirt sleeve and are arranged at intervals from top to bottom. The first umbrella skirt sleeve, the second umbrella skirt sleeves, and the insulator sleeve are integrally formed from polycrystalline silicon material.

[0005] As a further improvement of the utility model, the diameters of the plurality of second umbrella skirt sleeves are equal and smaller than the diameter of the first umbrella skirt sleeve.

[0006] As a further improvement of the present utility model, multiple second umbrella skirt sleeves are arranged at equal intervals, and the distance between two adjacent second umbrella skirt sleeves is a, and the distance between the uppermost second umbrella skirt sleeve and the first umbrella skirt sleeve is b, where a = b, a > 0, and b > 0.

[0007] As a further improvement of the present utility model, the part of the upper part of the fitting wrapped inside the insulator sleeve bulges outwards in the circumferential direction to form an annular protrusion for increasing the connection strength between the insulator sleeve and the fitting.

[0008] As a further improvement of the present utility model, one end of the upper surface of the first umbrella skirt sleeve and the second umbrella skirt sleeve far from the mandrel inclines downwards.

[0009] In summary, the beneficial effects of the present utility model are as follows: 1. The present utility model only sets a fitting at the bottom end and directly sets a groove at the top of the insulator sleeve to fix the cable. Compared with the prior art, the use of one fitting is reduced, the manufacturing cost of the whole insulator is reduced, and the manufacturing of the insulator is also facilitated. Since only one fitting needs to be fixed, the present utility model reduces the requirements for the mold.

[0010] 2. The diameter of the uppermost first umbrella skirt sleeve of the present utility model is the largest, increasing the creepage distance of the present utility model.

[0011] 3. The first umbrella skirt sleeve and the second umbrella skirt sleeve of the present utility model are arranged at equal intervals, facilitating the preparation of the mold.

[0012] 4. A protrusion is provided on the fitting of the present utility model, and the protrusion is wrapped inside the insulator sleeve, enhancing the connection strength between the fitting and the insulator sleeve.

[0013] 5. The upper surfaces of the first umbrella skirt sleeve and the second umbrella skirt sleeve of the present utility model are inclined, facilitating the flow of rainwater and improving the safety of power transmission. Description of the Drawings

[0014] Figure 1 is the front view of the present utility model.

[0015] Figure 2 is the left view of the present utility model.

[0016] Figure 3 is Figure 2 the A-A cross-sectional view of

[0017] Figure 4 is the three-dimensional structure diagram of the present utility model.

[0018] Figure 5 is the three-dimensional exploded view of the present utility model.

[0019] Wherein: 1. fitting; 2. core rod; 3. insulator sleeve; 4. external thread; 5. fixing hole; 6. groove; 7. first umbrella skirt sleeve; 8. second umbrella skirt sleeve; 9. protrusion; 10. fixing groove. Specific embodiments

[0020] The following further describes the specific embodiments of the present utility model with reference to the accompanying drawings.

[0021] As Figures 1 to 5 shown, the polycrystalline silicon pillar insulator includes a fitting 1, a core rod 2, and an insulator sleeve 3. An external thread 4 is provided at the bottom of the fitting 1 for fixing on the cross arm of a utility pole during use. Specifically, the lower part of the fitting 1 is inserted into the through hole on the cross arm, and a nut threadedly engaged with it is provided at the lower part of the fitting 1 to press the fitting against the cross arm. A fixing hole 5 is provided at the top of the fitting 1, and this fixing hole 5 is a blind hole. The bottom end of the core rod 2 extends into the fixing hole 5. The insulator sleeve 3 is made of polycrystalline silicon material and wraps around the upper part of the fitting 1 and the core rod 2, that is, the part of the upper part of the fitting 1 in the present utility model where no external thread 4 is provided and the part of the core rod 2 extending out of the fixing hole 5 are all wrapped by the insulator sleeve 3. That is, the part of the fitting 1 where the external thread 4 is provided in this application is located outside the insulator sleeve 3. The upper diameter of the insulator sleeve 3 in the present utility model is larger than the middle diameter (the part other than the following first umbrella skirt sleeve 7 and multiple second umbrella skirt sleeves 8), and a groove 6 for supporting the cable is formed by downward depression at the top of the insulator sleeve 3. This groove 6 is an arc groove. Fixing grooves 10 are provided on both sides below the groove 6. In the use state, the cable is arranged in the groove 6, and the cable is tied and fixed to the upper part of the insulator sleeve 3 by a metal wire wound in the fixing grooves 10. One first umbrella skirt sleeve 7 and multiple second umbrella skirt sleeves 8 are provided on the insulator sleeve 3. Both the first umbrella skirt sleeve 7 and the second umbrella skirt sleeves 8 are made of polycrystalline silicon material. Among them, the first umbrella skirt sleeve 7 is located at the topmost, and the multiple second umbrella skirt sleeves 8 are located below the first umbrella skirt sleeve 7 and are arranged at intervals from top to bottom. The first umbrella skirt sleeve 7, the second umbrella skirt sleeves 8 and the insulator sleeve 3 are integrally formed. When manufacturing the present utility model, first insert one end of the core rod 2 into the fixing hole 5 of the fitting 1, and then put the core rod 2 and the fitting 1 together into a mold, and inject polycrystalline silicon material into the mold.

[0022] The diameters of the multiple second umbrella skirt sleeves 8 in the present utility model are equal and smaller than the diameter of the first umbrella skirt sleeve 7. The multiple second umbrella skirt sleeves 8 in the present utility model are arranged at equal intervals, and the distance between two adjacent second umbrella skirt sleeves 8 is a, and the distance between the topmost second umbrella skirt sleeve 8 and the first umbrella skirt sleeve 7 is b, where a = b, a > 0, b > 0.

[0023] In the utility model, a part of the upper part of the fitting 1 wrapped inside the insulator sleeve 3 protrudes outward in the circumferential direction to form an annular protrusion 9, that is, the protrusion 9 is arranged along the direction away from the center line of the fitting 1. The protrusion 9 is used to increase the connection strength between the insulator sleeve 3 and the fitting 1, effectively preventing the fitting 1 from detaching from the insulator sleeve 3. One end of the upper surfaces of the first umbrella skirt sleeve 7 and the second umbrella skirt sleeve 8 in the utility model, which is far away from the core rod 2, inclines downward so that the rainwater dripping onto the first umbrella skirt sleeve 7 and the second umbrella skirt sleeve 8 on rainy days can flow downward and drip off, improving the safety of power transmission.

[0024] Parts not specifically described in the above specification are all prior art or can be realized through prior art. Moreover, the specific implementation cases described in the utility model are only the preferred implementation cases of the present invention, and are not used to limit the implementation scope of the utility model. That is, equivalent changes and modifications made according to the content of the scope of the utility model patent should all be regarded as the technical scope of the utility model.

Claims

1. Polymeric crystalline silicon post insulator, characterized in that: The invention comprises a hardware (1), a core rod (2) and an insulator sleeve (3). The bottom of the hardware (1) is provided with an external thread (4) for fixing to a cross arm on an electric pole when in use. The top of the hardware (1) is provided with a fixing hole (5). The bottom end of the core rod (2) extends into the fixing hole (5). The insulator sleeve (3) is wrapped around the upper part of the hardware (1) and the core rod (2). The top of the insulator sleeve (3) is provided with a groove (6) which is recessed downward to form a groove for supporting a cable line. The insulator sleeve (3) is provided with a first umbrella skirt sleeve (7) and a plurality of second umbrella skirt sleeves (8). The first umbrella skirt sleeve (7) is located at the top, and the plurality of second umbrella skirt sleeves (8) are located below the first umbrella skirt sleeve (7) and are arranged at intervals from top to bottom. The first umbrella skirt sleeve (7), the second umbrella skirt sleeve (8) and the insulator sleeve (3) are made of polymerized crystalline silicon material and are integrally formed.

2. The polymeric crystalline silicon post insulator according to claim 1, characterized in that: The diameters of the plurality of second umbrella skirt sleeves (8) are equal and smaller than the diameter of the first umbrella skirt sleeve (7).

3. The polymeric crystalline silicon post insulator according to claim 2, characterized in that: A plurality of second umbrella skirt covers (8) are arranged at equal intervals, and the distance between two adjacent second umbrella skirt covers (8) is a, and the distance between the top second umbrella skirt cover (8) and the first umbrella skirt cover (7) is b, wherein a=b, a>0, and b>0.

4. The polymeric crystalline silicon post insulator according to claim 1, characterized in that: The portion of the upper portion of the hardware (1) wrapped within the insulator sleeve (3) protrudes outwards in a circumferential direction to form an annular protrusion (9) for increasing the connection strength between the insulator sleeve (3) and the hardware (1).

5. The polymeric crystalline silicon post insulator according to claim 1, characterized in that: The upper surfaces of the first umbrella skirt sleeve (7) and the second umbrella skirt sleeve (8) are inclined downward away from one end of the core rod (2).

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