Novel support structure for phase isolated bus

Abstract

The utility model relates to a novel support structure for a phase isolated bus, which comprises porcelain bottle bases fixed on a closed bus shell and arranged in an up-and-down opposite manner, the porcelain bottle bases are provided with hollow inner cavities and communicated with the inner cavity of the closed bus shell, and an annular outer edge is formed at one end of each porcelain bottle base far away from the closed bus shell. A circular flange is connected to the annular outer edge through bolts and nuts, a through hole is formed in the center of the circular flange, an insulator located in an inner cavity of the closed bus shell is vertically connected in the through hole through a center bolt and a spring washer, and the other end of the insulator is connected with a fitting used for supporting a closed bus conductor through a bolt. According to the utility model, the usage amount of the insulators is reduced, the cost is reduced, the contact area between the insulators and the bus conductor is increased, the stability is ensured, and the IP65 protection grade requirement of the enclosed bus is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the manufacturing technical field of phase separation closed bus, specifically relates to a novel support structure of phase separation bus. BACKGROUND

[0002] The phase separation closed bus is a kind of electrical equipment, is widely used in power plant, and the generator in power plant is connected to excitation transformer, PT cabinet, plant transformer, main transformer transformer and other electrical equipment by phase separation closed bus to power supply, and phase separation closed bus is important primary medium voltage power transmission electrical equipment in large power generation.

[0003] Phase separation closed bus is divided into conductor, shell and support insulator three parts, the conductor and shell of phase separation closed bus are cylindrical structure, and the conductor of traditional phase separation closed bus is supported by three groups of insulators, so that the conductor and shell of phase separation closed bus are air isolated, shielding effect of the conductor of closed bus is achieved, and the product is widely used in power plant.With the diversification of power plant equipment products, plant transformer in power plant is connected to plant switch cabinet by phase separation closed bus, and the voltage grade of the phase separation closed bus product is relatively low, and the current is relatively small.The selected phase separation closed bus is relatively small in size, and the conductor and shell of closed bus are relatively small in size and weight, so it is relatively wasteful to support by traditional three groups of insulators. UTILITY MODEL CONTENT

[0004] In view of the deficiencies of prior art, the utility model provides a novel support structure of phase separation bus, saves cost, reduces manufacturing procedure, can also meet the insulation, voltage resistance, lightning impact and other form tests of closed bus, meets the IP65 protection grade requirement of closed bus, and adds a new product for closed bus product.

[0005] The utility model is realized by the following technical schemes:

[0006] A novel support structure of phase separation bus is provided, which comprises a porcelain bottle base fixed on the closed bus shell and arranged vertically, the porcelain bottle base is provided with a hollow inner cavity and is communicated with the inner cavity of the closed bus shell, the end of the porcelain bottle base away from the closed bus shell is formed with an annular outer edge, a circular flange is connected to the annular outer edge by bolts and nuts, a through hole is formed in the center of the circular flange, and an insulator in the inner cavity of the closed bus shell is connected vertically in the through hole by a center bolt and a spring washer, and the other end of the insulator is connected with a fitting for supporting the closed bus conductor by a bolt.

[0007] Further, the side of the fitting abutting against the closed bus conductor is formed with an arc-shaped concave surface matched with the shape of the closed bus conductor.

[0008] By setting the arc concave surface, the contact area between the fitting and the closed bus conductor can be increased, and the stability of the support can be improved.

[0009] Further, the end face of the insulator opposite to the fitting is formed with two embedded bolt holes, the fitting is provided with two bolt through holes opposite to the embedded bolt holes on the arc concave surface, a limiting ring table is formed in each bolt through hole, and a countersunk head bolt connecting the fitting and the insulator is connected at the limiting ring table.

[0010] The end face of the insulator opposite to the fitting is provided with two embedded bolt holes opposite to the bolt through holes on the arc concave surface of the fitting, and the insulator and the fitting are fixed by the countersunk head bolt and the limiting ring table.

[0011] Further, the end face of the insulator opposite to the circular flange and the sealing gasket is provided with a center bolt hole opposite to the through hole of the circular flange and used for the center bolt to connect the insulator and the circular flange.

[0012] The other end of the insulator and the circular flange are connected and fixed by the center bolt and the center bolt hole.

[0013] Further, a sealing gasket is further arranged between the annular outer edge of the porcelain bottle base and the circular flange.

[0014] By arranging the sealing gasket between the annular outer edge of the porcelain bottle base and the circular flange, the sealing effect between the porcelain bottle and the circular flange can be effectively packaged, and water leakage between the porcelain bottle base and the shell is avoided.

[0015] Further, the fitting and the insulator are respectively a DMC composite material fitting and a DMC composite material insulator.

[0016] By selecting the DMC material fitting and the insulator, good insulation performance and good support strength are ensured, which helps to ensure the safety and stability of the whole.

[0017] Further, the center bolt is further provided with a sealing structure between the center bolt and the circular flange, and the sealing structure comprises an annular sealing sleeve arranged on the center bolt, a sealing groove is formed on the side of the annular sealing sleeve in contact with the circular flange, and an O-ring is arranged in the sealing groove.

[0018] The sealing structure is arranged between the center bolt and the circular flange, and the connection part is effectively sealed by the sealing cooperation of the annular sealing sleeve and the O-ring, so that the water leakage is effectively avoided, and the overall waterproof level is improved.

[0019] The beneficial effects of the utility model are as follows:

[0020] The utility model discloses changed traditional phase separation enclosed busbar support mode, adopt two insulators support mode of setting up, the installation quantity of insulator is saved. Meanwhile because the arc concave surface is formed on the surface of the hardware, can increase the contact area between the enclosed busbar conductor, compared with traditional mode, the point contact support between the insulator and busbar conductor, the upper and lower support mode of the utility model makes the fixed more firm of conductor and shell, and the sealing washer is arranged between the circular flange and porcelain bottle base, and the sealing structure is arranged between the center bolt and circular flange, also ensure the sealing performance of medium voltage enclosed busbar, satisfy the sealing performance of medium voltage enclosed busbar IP65.

[0021] The novel medium voltage phase separation enclosed busbar support mode of the utility model saves 1 / 3 raw materials compared with traditional medium voltage phase separation enclosed busbar support mode, saves 1 / 3 welding porcelain bottle base and the time of assembly, greatly saves material cost and labor cost, and the fixed mode is simple and convenient, saves raw materials, saves time, saves work and saves effort. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the whole structure schematic diagram of the utility model.

[0023] Figure 2 It is the installation schematic diagram of the utility model in the enclosed busbar shell.

[0024] Figure 3 It is the explosion schematic diagram of the utility model.

[0025] Figure 4 It is Figure 4 The bottom view of medium hardware.

[0026] Figure 5 It is the side surface cross section structure schematic diagram of the utility model in insulator.

[0027] In the drawing:

[0028] 1, enclosed busbar shell, 2, busbar conductor, 3, porcelain bottle base, 4, circular flange, 5, sealing washer, 6, bolt, 7, center bolt, 8, insulator, 9, hardware, 10, countersunk bolt, 11, annular outer edge, 12, bolt through hole, 13, arc concave surface, 14, pre-buried bolt hole, 15, center bolt hole, 16, elastic pad, 17, annular sealing sleeve, 18, O ring. DETAILED DESCRIPTION

[0029] In order to clearly illustrate the technical features of the scheme, the scheme is described below through specific implementation.

[0030] The utility model provides a novel support structure of phase separation bus, which comprises porcelain bottle bases 3 fixed on a closed bus shell 1 and arranged oppositely in up and down directions, and the closed bus shell 1 is provided with through holes arranged oppositely in up and down directions, which are used for welding the porcelain bottle bases 3 to fix the porcelain bottle bases 3 with the closed bus shell 1, and the two porcelain bottle bases 3 are arranged oppositely and form an angle of 180 degrees after welding.

[0031] The porcelain bottle base 3 is provided with a hollow inner cavity and is communicated with the inner cavity of the closed bus shell 1, and the end of the porcelain bottle base 3 away from the closed bus shell 1 is formed with an annular outer edge 11, and a circular flange 4 is connected to the annular outer edge 11 through a bolt 6 and a nut, and a sealing washer 5 is further arranged between the annular outer edge 11 of the porcelain bottle base 3 and the circular flange 4 to improve the sealing performance. In the embodiment, five bolt holes are uniformly arranged on the annular outer edge 11, the circular flange 4 and the sealing washer 5 at the same position, respectively, and the three are connected and fixed through the five bolts 6.

[0032] A through hole is formed in the center of the circular flange 4, and an insulator 8 located in the inner cavity of the closed bus shell 1 is vertically connected in the through hole through a center bolt 15 and an elastic washer 16, and a fitting 9 for supporting the closed bus conductor 2 is connected to the other end of the insulator 8 through a bolt. One side of the fitting 9 abutting against the closed bus conductor 2 is formed with an arc-shaped concave surface 13 matched with the shape of the closed bus conductor 2. In the embodiment, the fitting 9 and the insulator 8 are a fitting made of DMC composite material and an insulator made of DMC composite material, respectively.

[0033] The end surface of the insulator 8 opposite to the fitting 9 is formed with two embedded bolt holes 14, and the fitting 9 is provided with two bolt through holes 12 opposite to the embedded bolt holes 14 on the arc-shaped concave surface 13, each bolt through hole 12 is formed with a limiting ring table, and a countersunk bolt 10 connecting the fitting 9 and the insulator 8 is connected at the limiting ring table.

[0034] The end surface of the insulator 8 opposite to the circular flange 4 and the sealing washer 5 is provided with a center bolt hole 15 opposite to the through hole of the circular flange 4 and used for connecting the insulator 8 and the circular flange 4 through the center bolt 7. In order to ensure the sealing of the connection between the center bolt 7 and the circular flange 4, a sealing structure is further arranged between the center bolt 7 and the circular flange 4, which comprises an annular sealing sleeve 17 sleeved on the center bolt 7, the annular sealing sleeve 17 is provided with a sealing groove on the surface in contact with the circular flange 4, and an O-ring 18 is arranged in the sealing groove.

[0035] The utility model discloses a new scheme is added to the support mode of medium voltage off -phase bus, and medium voltage off -phase bus support has a kind of selection, especially applicable to voltage grade is not high, current is smaller, off -phase enclosed bus conductor shell selection smaller medium voltage off -phase enclosed bus, compared with conventional medium voltage off -phase enclosed bus design, production cost is reduced, raw material is saved, production efficiency is improved.

[0036] Of course, the above description is not limited to the above examples, and the technical features not described in the utility model can be realized by or using the prior art, which will not be repeated here. The above examples and drawings are only used to illustrate the technical scheme of the utility model and are not a limitation on the utility model. The preferred embodiments of the utility model are described in detail, and those skilled in the art should understand that changes, modifications, additions or substitutions made by those skilled in the art within the essential scope of the utility model do not deviate from the purpose of the utility model and should also fall within the protection scope of the claims of the utility model.

Claims

1. A novel support structure for a segregated phase bus, characterized by: The porcelain bottle base is provided with a hollow inner cavity and communicates with the inner cavity of the closed busbar shell, and the end of the porcelain bottle base away from the closed busbar shell is formed with an annular outer edge, and a circular flange is connected to the annular outer edge through a bolt and a nut, a through hole is formed in the center of the circular flange, and an insulator located in the inner cavity of the closed busbar shell is vertically connected in the through hole through a center bolt and a spring washer, and the other end of the insulator is connected with a fitting for supporting the closed busbar conductor through a bolt.

2. The novel support structure for phase busbars according to claim 1, characterized in that: The side of the fitting abutting against the closed busbar conductor is formed with an arc-shaped concave surface matched with the shape of the closed busbar conductor.

3. The novel support structure for phase busbars according to claim 2, characterized in that: The end surface of the insulator opposite to the fitting is formed with two embedded bolt holes, and the fitting is provided with two bolt through holes opposite to the embedded bolt holes on the arc-shaped concave surface, each bolt through hole is formed with a limiting ring table, and a countersunk head bolt connecting the fitting and the insulator is connected at the limiting ring table.

4. The novel support structure for phase busbars as claimed in claim 2 wherein: The end surface of the insulator opposite to the circular flange and the sealing washer is provided with a center bolt hole opposite to the through hole of the circular flange and used for connecting the insulator and the circular flange through the center bolt.

5. The novel support structure for phase busbars as claimed in claim 1 wherein: A sealing washer is further arranged between the annular outer edge of the porcelain bottle base and the circular flange.

6. The novel support structure for phase busbars according to claim 1, characterized in that: The fitting and the insulator are respectively a DMC composite material fitting and a DMC composite material insulator.

7. The novel support structure for phase busbars as claimed in claim 1 wherein: A sealing structure is further arranged between the center bolt and the circular flange, and the sealing structure comprises an annular sealing sleeve sleeved on the center bolt, one side of the annular sealing sleeve in contact with the circular flange is provided with a sealing groove, and an O-ring is arranged in the sealing groove.

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