Connecting structure at insulator of gas insulated switchgear

Abstract

The utility model discloses a connecting structure at the position of a gas insulated switchgear insulator, a basin-type insulator is clamped between a first flange and a second flange, the peripheries of the first flange, the second flange and the basin-type insulator are wrapped with a U-shaped insulation sealing ring, the outside of the U-shaped insulation sealing ring is provided with a first semi-ring-shaped gland and a second semi-ring-shaped gland, and the first semi-ring-shaped gland and the second semi-ring-shaped gland are connected with the basin-type insulator. According to the utility model, the structure is reasonable, and through the cooperation of the U-shaped insulation sealing ring, the first semi-annular gland and the second semi-annular gland, the sealing performance of the insulator of the gas insulation combined electric appliance is greatly improved; and two annular convex ribs are arranged on the inner wall of the U-shaped insulation sealing ring and are respectively clamped in chamfers at the joint of the first flange and the basin-type insulator and the joint of the second flange and the basin-type insulator, so that the sealing performance of the joints of the flanges and the basin-type insulator is further ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of gas insulated switchgear, specifically to a connecting structure at the insulator of gas insulated switchgear. BACKGROUND

[0002] The gas insulated switchgear device refers to the metal enclosed switchgear device that adopts gas and does not adopt air under the atmospheric pressure as the insulating medium entirely or partially. The gas insulated switchgear (GIS) is a complete set of device that integrates high voltage electrical equipment (such as circuit breaker, disconnecting switch, grounding switch, mutual inductor, etc.) in the metal enclosed shell and fills in the insulating gas (mainly sulfur hexafluoride). Its core feature lies in replacing the traditional air insulation by the gas insulation, realizing the compactness of equipment, the improvement of safety and reliability.

[0003] The connecting structure at the insulator of gas insulated switchgear is mostly that two flanges clamp the basin type insulator, then fastening connection is carried out through bolt and nut, and the sealing property of this connecting structure is poor, in the long-term use process, the gas leakage condition is prone to appear, therefore, the improved technology is urgently needed to solve the problem existing in the prior art. UTILITY MODEL CONTENT

[0004] The utility model discloses a connecting structure at the insulator of gas insulated switchgear to solve the problem in the background art.

[0005] In order to achieve the above object, the utility model provides the following technical scheme: a connecting structure at the insulator of gas insulated switchgear, including first flange, second flange, basin type insulator, U type insulating sealing ring, first half ring shape gland and second half ring shape gland, the basin type insulator is clamped between first flange and second flange, the periphery of first flange, second flange and basin type insulator is wrapped with U type insulating sealing ring, the outside of U type insulating sealing ring is provided with first half ring shape gland and second half ring shape gland, both ends of first half ring shape gland and second half ring shape gland are provided with connecting plate, and first half ring shape gland and second half ring shape gland are fastening connected through connecting plate, first bolt and nut, first flange, second flange, basin type insulator, U type insulating sealing ring are all fastening connected with first half ring shape gland and second half ring shape gland through second bolt and nut, the inner wall of U type insulating sealing ring is provided with two annular convex ribs, and the two sides of first flange, second flange and basin type insulator are all provided with chamfer, and two annular convex ribs are clamped in the chamfer at the connecting place of first flange and basin type insulator, the connecting place of second flange and basin type insulator respectively.

[0006] Preferably, the utility model provides a kind of connecting structure at insulator of gas insulated switchgear, wherein, the first half ring-shaped gland both ends end face is equipped with clamping groove, the second half ring-shaped gland both ends end face is equipped with protrusion, the protrusion is mutually inserted with clamping groove.

[0007] Preferably, the utility model provides a kind of connecting structure at insulator of gas insulated switchgear, wherein, the first flange, second flange, basin type insulator, U-shaped insulation sealing ring, first half ring-shaped gland and second half ring-shaped gland are equipped with several through holes, the second bolt is passed in through hole and is cooperated with nut.

[0008] Preferably, the utility model provides a kind of connecting structure at insulator of gas insulated switchgear, wherein, the section of U-shaped insulation sealing ring is U-shaped, one side of U-shaped insulation sealing ring is clamped between first flange and first half ring-shaped gland and second half ring-shaped gland, the other side of U-shaped insulation sealing ring is clamped between second flange and first half ring-shaped gland and second half ring-shaped gland.

[0009] Preferably, the utility model provides a kind of connecting structure at insulator of gas insulated switchgear, wherein, the outer diameter of first flange, second flange and basin type insulator is identical.

[0010] Compared with prior art, the utility model has the beneficial effects that:

[0011] (1) the periphery of first flange, second flange and basin type insulator is wrapped with U-shaped insulation sealing ring, the periphery of U-shaped insulation sealing ring is wrapped with first half ring-shaped gland and second half ring-shaped gland, the sealing property at insulator of gas insulated switchgear is greatly improved by the cooperation of U-shaped insulation sealing ring, first half ring-shaped gland and second half ring-shaped gland.

[0012] (2) the inner wall of U-shaped insulation sealing ring is provided with two annular convex ribs to be clamped in the chamfer of the connection between first flange and basin type insulator and the connection between second flange and basin type insulator respectively, so as to further ensure the sealing property of the connection between flange and basin type insulator.

[0013] (3) the two ends of first half ring-shaped gland and second half ring-shaped gland are connected by the cooperation of clamping groove and protrusion, which further improves the sealing property of the two ends of first half ring-shaped gland and second half ring-shaped gland, and ensures the connection strength and stability between first half ring-shaped gland and second half ring-shaped gland. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the structural schematic diagram of the utility model;

[0015] Figure 2 It is the sectional structure schematic diagram of the utility model;

[0016] Figure 3 For the attachment Figure 2 Enlarged structural diagram of the first half ring-shaped gland;

[0017] Figure 4 For the first half ring-shaped gland and the second half ring-shaped gland structure diagram;

[0018] Figure 5 For the second half ring-shaped gland end enlarged structural diagram;

[0019] Figure 6 For the U-shaped insulation sealing ring structure diagram.

[0020] In the figure: the first flange 1, the second flange 2, the basin type insulator 3, the U-shaped insulation sealing ring 4, the first half ring-shaped gland 5, the second half ring-shaped gland 6, the connecting plate 7, the first bolt 8, the second bolt 9, the annular convex rib 10, the clamping groove 11, the protrusion 12. DETAILED DESCRIPTION

[0021] The technical scheme of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0022] It should be noted that in the description of the present application, it should be noted that the terms "inner", "outer", "upper", "lower", "two sides", "one end", "the other end", "left", "right" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application.

[0023] Please refer to Figures 1-6The utility model provides a technical scheme: a connecting structure at the insulator of gas insulated combined electric appliance, including first flange 1, second flane 2, basin type insulator 3, U type insulating sealing ring 4, first half ring cover 5 and second half ring cover 6, basin type insulator 3 is clamped between first flange 1 and second flane 2, and the periphery of first flange 1, second flane 2 and basin type insulator 3 is wrapped with U type insulating sealing ring 4, and the outer diameter of first flange 1, second flane 2 and basin type insulator 3 is consistent, to guarantee that the inner wall of U type insulating sealing ring 4 is closely combined with first flange 1, second flane 2 and basin type insulator 3, and the outside of U type insulating sealing ring 4 is provided with first half ring cover 5 and second half ring cover 6, and the both ends of first half ring cover 5 and second half ring cover 6 are provided with connecting plate 7, and first half ring cover 5 and second half ring cover 6 are connected tightly through connecting plate 7, first bolt 8 and nut, and the both ends end faces of first half ring cover 5 are provided with clamping groove 11, and the both ends end faces of second half ring cover 6 are provided with protrusion 12, and protrusion 12 and clamping groove 11 are mutually inserted, adopt the way of tongue and groove connection, guarantee the connection stability and the strength between first half ring cover 5 and second half ring cover 6, and first flange 1, second flane 2, basin type insulator 3, U type insulating sealing ring 4 are connected tightly through second bolt 9 and nut and first half ring cover 5 and second half ring cover 6, and first flange 1, second flane 2, basin type insulator 3, U type insulating sealing ring 4, first half ring cover 5 and second half ring cover 6 are provided with a plurality of through holes, and second bolt 9 is arranged in the through hole and is matched with the nut, to realize the mutual connection between first flange 1, second flane 2, basin type insulator 3, U type insulating sealing ring 4, first half ring cover 5 and second half ring cover 6, and the section of U type insulating sealing ring 4 is U-shaped, and one side of U type insulating sealing ring 4 is clamped between first flange 1 and first half ring cover 5 and second half ring cover 6, to guarantee the sealing property between first flange 1 and first half ring cover 5 and second half ring cover 6, and the other side of U type insulating sealing ring 4 is clamped between second flange 2 and first half ring cover 5 and second half ring cover 6, to guarantee second flange 2 and first half ring cover 5 and second half ring cover 6, and the inner wall of U type insulating sealing ring 4 is provided with two annular beads 10, and the both sides of first flange 1, second flane 2 and basin type insulator 3 are provided with chamfer, and two annular beads 10 are clamped in the chamfer of the connecting place of first flange 1 and basin type insulator 3, the connecting place of second flane 2 and basin type insulator 3 respectively.

[0024] Installation method and operating principle: First, connect the first flange 1 of one electrical appliance to the second flange 2 of another electrical appliance, and install the basin insulator 3 between the first flange 1 and the second flange 2. Then, stretch and wrap the U-shaped insulating sealing ring 4 around the outside of the first flange 1, the basin insulator 3, and the second flange 2. Next, put the first semi-annular cover 5 and the second semi-annular cover 6 on the outside of the U-shaped insulating sealing ring 4, and fit the first semi-annular cover 5 and the second semi-annular cover 6 with the tongue and groove joint of the protrusion 12 and the slot 11. After the first semi-annular cover 5 and the second semi-annular cover 6 are aligned with the holes, pass the second bolt 9 through the through holes of the first semi-annular cover 5, the second semi-annular cover 6, the U-shaped insulating sealing ring 4, the first flange 1, the second flange 2, and the basin insulator 3, and complete the fastening connection with the nut. At the same time, the first bolt 8 and the nut are used to fasten the two ends of the first semi-annular cover 5 and the second semi-annular cover 6 through the connecting plate 7 to complete the installation. This utility model has a reasonable structure. The first flange 1, the second flange 2, and the basin insulator 3 are all surrounded by a U-shaped insulating sealing ring 4. The U-shaped insulating sealing ring 4 is further surrounded by a first semi-annular cap 5 and a second semi-annular cap 6. Through the cooperation of the U-shaped insulating sealing ring 4, the first semi-annular cap 5, and the second semi-annular cap 6, the sealing performance at the gas-insulated switchgear insulator is greatly improved. In addition, the inner wall of the U-shaped insulating sealing ring 4 is provided with two annular ribs 10, which are respectively locked in the chamfer at the connection between the first flange 1 and the basin insulator 3 and the connection between the second flange 2 and the basin insulator 3, thereby further ensuring the sealing performance at the connection between the flange and the basin insulator 3. The two ends of the first semi-annular cap 5 and the second semi-annular cap 6 are connected by the tongue and groove joints of the groove 11 and the protrusion 12, respectively, to ensure the connection strength and stability between the first semi-annular cap 5 and the second semi-annular cap 6.

[0025] Any aspects of this utility model not described in detail are well-known technologies to those skilled in the art.

[0026] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to the embodiments, those skilled in the art should understand that modifications and equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A connection structure at a gas insulated switchgear insulator, characterized by: The utility model provides a flange, it includes first flange (1), second flan (2), basin type insulator (3), U type insulating sealing ring (4), first half ring cover (5) and second half ring cover (6), the basin type insulator (3) is clamped between first flange (1) and second flan (2), the periphery of first flange (1), second flan (2) and basin type insulator (3) is wrapped with U type insulating sealing ring (4), the outside of U type insulating sealing ring (4) is provided with first half ring cover (5) and second half ring cover (6), both ends of first half ring cover (5) and second half ring cover (6) are provided with connecting plate (7), and first half ring cover (5) and second half ring cover (6) are fastened by connecting plate (7), first bolt (8) and nut, and first flange (1), second flan (2), basin type insulator (3), U type insulating sealing ring (4) are fastened with first half ring cover (5) and second half ring cover (6) by second bolt (9) and nut, the inner wall of U type insulating sealing ring (4) is provided with two annular ribs (10), and the both sides of first flange (1), second flan (2) and basin type insulator (3) are provided with chamfer, and two annular ribs (10) are clamped in the chamfer of the connecting place of first flange (1) and basin type insulator (3), the connecting place of second flan (2) and basin type insulator (3) respectively.

2. The connecting structure at the insulator of a gas insulated combined electrical device according to claim 1, characterized in that: The both ends of first half ring cover (5) are provided with clamping groove (11), and the both ends of second half ring cover (6) are provided with protrusion (12), and the protrusion (12) is inserted into clamping groove (11).

3. The connecting structure at the insulator of a gas insulated combined electrical device according to claim 1, characterized in that: First flange (1), second flan (2), basin type insulator (3), U type insulating sealing ring (4), first half ring cover (5) and second half ring cover (6) are provided with a plurality of through holes, and second bolt (9) is arranged in the through hole and is matched with nut.

4. The connecting structure at the insulator of a gas insulated combined electrical device according to claim 1, characterized in that: The section of U type insulating sealing ring (4) is U-shaped, one side of U type insulating sealing ring (4) is clamped between first flange (1) and first half ring cover (5) and second half ring cover (6), and the other side of U type insulating sealing ring (4) is clamped between second flan (2) and first half ring cover (5) and second half ring cover (6).

5. The connecting structure at the insulator of a gas insulated combined electrical device according to claim 1, characterized in that: The outer diameter of first flange (1), second flan (2) and basin type insulator (3) is consistent.

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