A connection flange for insulator

Abstract

A connecting flange for an insulator is arranged at both ends of an insulating sleeve and fixedly connected to a filling material filled in the insulating sleeve, comprising: a flange plate, on which a plurality of connecting holes are arranged; a flange shaft, which is columnar and can be inserted into the insulating sleeve and is arranged perpendicular to the flange plate, the flange shaft is coaxially arranged with the flange plate, and a bite groove is provided at the connection between the flange shaft and the flange plate. The columnar flange shaft design is utilized to achieve positioning with the insulating sleeve to avoid shaking during fixation, and at the same time, a bite groove is added at the connection between the flange shaft and the flange plate, and an anchoring structure is formed by cooperating with the filling material to enhance the mechanical connection strength between the flange shaft and the insulating sleeve and prevent axial displacement.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage electrical equipment, in particular to a connecting flange for an insulator. Background Art

[0002] Insulators are devices installed between conductors of different potentials or between conductors and grounding components, and are able to withstand voltage and mechanical stress. Insulators need to be fixed to the transmission line through connecting fittings, and in order to connect with the connecting fittings, corresponding connecting flanges need to be set at both ends of the insulator, and the connecting flange and the insulating sleeve of the insulator are connected through the flange shaft of the connecting flange. Since the insulating sleeve needs to be filled with filling material, when the bite force between the flange shaft and its filling material is insufficient, the insulating sleeve and the connecting flange will loosen and detach, which will lead to the failure of the mechanical properties or electrical properties of the insulator itself. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model aims to provide a connecting flange for an insulator.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A connecting flange for an insulator, which is arranged at both ends of an insulating sleeve and fixedly connected to a filling material filled in the insulating sleeve, comprises:

[0006] A flange having a plurality of connection holes;

[0007] The flange shaft is columnar and can be inserted into the insulating sleeve. The flange shaft is arranged perpendicular to the flange plate. The flange shaft is arranged coaxially with the flange plate.

[0008] A bite groove is provided at the connection between the flange shaft and the flange plate.

[0009] The flange shaft is circumferentially provided with a plurality of grooves arranged parallel to the flange plate.

[0010] The flange shaft is provided with a groove extending along the axial direction of the flange shaft.

[0011] The grooves are symmetrically arranged on both sides of the flange shaft.

[0012] A rotation-stopping portion is arranged in each groove.

[0013] Each anti-rotation part is coaxially arranged.

[0014] The anti-rotation parts are symmetrically arranged on both sides of the flange shaft.

[0015] The flange plate, flange shaft and engagement groove are integrally formed.

[0016] The bottom of the flange may be provided with a step.

[0017] The flange includes a first flange and a second flange which are coaxially arranged, and the diameter of the second flange is smaller than the diameter of the first flange, and the connecting hole is completely located in the projection area of ​​the second flange.

[0018] The beneficial effects of the utility model are as follows: a columnar flange shaft design is utilized to achieve positioning with the insulating sleeve to avoid shaking during fixation; at the same time, an engaging groove is added at the connection between the flange shaft and the flange plate, and an anchoring structure is formed by cooperating with the filling material to enhance the mechanical connection strength between the flange shaft and the insulating sleeve and prevent axial displacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of Example 1 of the utility model.

[0020] Figure 2 This is the front view of Example 1 of the utility model.

[0021] Figure 3 It is a three-dimensional schematic diagram of embodiment 2 of the utility model.

[0022] Figure 4 It is a three-dimensional schematic diagram of another angle of embodiment 2 of the present utility model.

[0023] Figure 5 It is the front view of embodiment 2 of the present utility model.

[0024] Figure 6 It is an internal schematic diagram of the utility model when applied to an insulator. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0027] like Figure 6As shown, it discloses a schematic diagram of an insulator, which includes an insulating sleeve and connecting flanges arranged at both ends of the insulating sleeve 400. At the same time, the insulating sleeve is filled with filling materials, such as epoxy resin or cement, and the connecting flange is fixedly connected to the filling material filled in the insulating sleeve 400. At the same time, the connecting flange can be used to fix the connecting hardware to fix the insulator on the power grid.

[0028] like Figure 1 and Figure 2 As shown, the connecting flange includes an integrally formed flange plate 100 and a flange shaft 200, wherein the cross-section of the flange plate is circular or non-circular, such as elliptical, and is circular in the present embodiment, the flange shaft is arranged perpendicular to the flange plate, and the center line of the flange shaft coincides with the center of the flange plate, and the flange shaft is columnar, preferably cylindrical, and its size is preferably adapted to the diameter of the insertion hole of the insulating sleeve, which can ensure that the flange shaft will not shake when the fixed connection is performed. In some other embodiments, non-cylindrical shapes, such as elliptical, square, etc., can also be used. At the same time, a bite groove 300 is formed at the connection between the flange shaft and the flange plate, and an anchoring structure is formed by cooperating with the filling material to enhance the mechanical connection strength between the flange shaft and the insulating sleeve and prevent axial displacement.

[0029] The connecting flange is directly processed and produced by the cold extrusion process. Compared with the casting process, its structure is more stable. The whole is formed in one piece by the cold extrusion process. At the same time, it can also be processed by cold heading / casting / forging / warm extrusion and other processes.

[0030] The flange 100 is provided with a plurality of connection holes 110 , which are symmetrically arranged. Two or more connection holes are used, so that the connection with the connection fittings is more reliable. Meanwhile, threads are provided in the connection holes for easy connection.

[0031] Its circular metal plate structure (carbon steel, stainless steel, etc.) can evenly disperse the mechanical load and ensure the stability of the insulator under high voltage, vibration and other working conditions.

[0032] The flange shaft 200 is columnar and can be inserted into the insulating sleeve 400, and is arranged perpendicular to the flange 100. The flange shaft 200 is coaxially arranged with the flange 100, and the flange shaft is located at the center of the flange, so that after the flange shaft is installed in place, it is just located on the central axis of the insulator, and then when it is fixed on the connecting hardware, it can ensure that the weight of both sides of the insulator is consistent, making its fixation more stable.

[0033] A bite groove 300 is provided at the connection between the flange shaft 200 and the flange plate 100. The bite groove is directly integrally formed on the flange plate and the flange shaft. When the flange shaft is fully inserted into the insulating sleeve, the bite groove is also located in the insulating sleeve and is fixedly connected to the filling material filled inside, thereby making the bite of the two higher, forming an anchoring structure, enhancing the mechanical connection strength between the flange shaft and the insulating sleeve, and preventing axial displacement.

[0034] The connection holes on the flange can be set through or non-through. In some embodiments, a step can be set at the bottom of the flange to increase the thickness of the flange to ensure that the connection holes cannot be completely through.

[0035] like Figure 3 , Figure 4 and Figure 5 As shown, the flange includes a first flange 120 and a second flange 130 which are coaxially arranged, and the diameter of the second flange 130 is smaller than the diameter of the first flange 120, and the connecting hole 110 is completely located within the projection area of ​​the second flange 130.

[0036] The thickness of the second flange 130 plus the first flange 120 is greater than the depth of the connection hole 110. That is, the thickness of the flange is increased by the first flange and the second flange arranged in layers, and the diameter of the second flange is smaller than the diameter of the first flange, and the top of the insertion hole of the insulating sleeve is provided with a mounting groove adapted to the second flange, and the second flange is embedded therein, so that the bottom surface of the first flange contacts the end surface of the insulating sleeve, and the second flange can be circular or non-circular, and it mainly cooperates with the first flange to increase the thickness of the position where the connection hole is located, so that the connection hole cannot be set through the flange, and then when fixing, it will not hit the internal filling material due to excessive twisting, resulting in damage to the bolts, such as when the interior is filled with cement, the bolts directly hit the cement, which will cause damage to the bolts and affect the connection reliability.

[0037] Secondly, the non-circular design can also facilitate the filling material to be filled in from the contact edge with the insulating sleeve, ensuring a tighter internal filling.

[0038] like Figure 2 and Figure 5 As shown, the flange shaft 200 is provided with a plurality of grooves 210 arranged along the axial direction of the flange shaft 200. Each groove is arranged in the same manner as the flange plate, and the grooves arranged in an array are used to add multiple anchoring structures to form a "locking effect", which significantly improves the bonding strength. At the same time, after the filling material fills the groove, the solidified three-dimensional network formed can resist axial or circumferential shear force and prevent debonding failure.

[0039] In addition, the groove design can transform the flange shaft surface into a rough interface, increase the contact area, and make the bonding force between the filling material and the flange shaft stronger. At the same time, the groove can also guide the flow of the filling material to ensure that the flange shaft surface is completely filled.

[0040] The flange shaft 200 is provided with a groove 230 extending along the axial direction of the flange shaft 200, and the groove 230 is connected to each groove 210. The design of the groove facilitates the filling material to fully enter each groove or the insulating sleeve.

[0041] The grooves 230 are symmetrically arranged on both sides of the flange shaft 200 , and the symmetrical arrangement ensures that the filling material on both sides enters evenly and ensures that the circumferential force of the flange shaft is consistent.

[0042] A stopper 220 is provided in each groove 210. The stopper 220 is integrally formed with the flange shaft and prevents the circumferential rotation of the flange shaft by separating the grooves. Its function is similar to that of the grooves, and it forms an anchoring structure in the vertical rotation direction to resist the circumferential shear force.

[0043] The anti-rotation parts 220 are coaxially arranged to ensure that the circumferential anchoring structure is on the same axis, and the processing is more convenient. The whole is assembled, and the amount of filling material entering each groove is consistent.

[0044] The anti-rotation parts 220 are symmetrically arranged on both sides of the flange shaft 200, so that both sides form an anchoring structure to limit the circumferential rotation of the flange shaft, making the engagement between the flange shaft and the insulating sleeve more stable.

[0045] The embodiments should not be regarded as limiting the present invention, but any improvements based on the spirit of the present invention should be within the protection scope of the present invention.

Claims

1. A connecting flange for an insulator, which is arranged at both ends of an insulating sleeve (400) and is fixedly connected to a filling material filled in the insulating sleeve (400), characterized in that: It includes: A flange (100) having a plurality of connection holes (110) formed thereon; The flange shaft (200) is columnar and can be inserted into the insulating sleeve (400). The flange shaft (200) is arranged perpendicular to the flange plate (100). The flange shaft (200) and the flange plate (100) are arranged coaxially. A bite groove (300) is provided at the connection between the flange shaft (200) and the flange plate (100).

2. A connecting flange for an insulator according to claim 1, characterized in that: The flange shaft (200) is provided with a plurality of grooves (210) in the circumferential direction and arranged parallel to the flange plate.

3. A connecting flange for an insulator according to claim 2, characterized in that: The flange shaft (200) is provided with a groove (230) extending along the axial direction of the flange shaft (200).

4. A connecting flange for an insulator according to claim 3, characterized in that: The grooves (230) are symmetrically arranged on both sides of the flange shaft (200).

5. A connecting flange for an insulator according to claim 2, 3 or 4, characterized in that: A rotation-stopping portion (220) is provided in each groove (210).

6. A connecting flange for an insulator according to claim 5, characterized in that: The various anti-rotation parts (220) are coaxially arranged.

7. The connecting flange for an insulator according to claim 5, characterized in that: The anti-rotation parts (220) are symmetrically arranged on both sides of the flange shaft (200).

8. The connecting flange for an insulator according to claim 1, characterized in that: The flange plate (100), the flange shaft (200) and the engaging groove (300) are integrally formed.

9. The connecting flange for an insulator according to claim 1, characterized in that: The bottom of the flange (100) may be provided with a step.

10. A connecting flange for an insulator according to claim 9, characterized in that: The flange comprises a first flange (120) and a second flange (130) which are coaxially arranged, wherein the diameter of the second flange (130) is smaller than the diameter of the first flange (120), and the connection hole (110) is completely located within the projection area of ​​the second flange (130).

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