GIS three-phase commutation assembly structure

Abstract

The utility model relates to the technical field of GIS equipment, in particular to a GIS three-phase commutation assembly structure. The structure comprises a barrel, and basin-type insulators are arranged at the two ends, located on the same axis, of the barrel and serve as a wire inlet side and a wire outlet side respectively. The two basin-type insulators are respectively provided with an A-phase insert, a B-phase insert and a C-phase insert which are distributed in an inverted triangle shape, the B-phase insert is located at the vertex of the lower portion, the A-phase insert and the C-phase insert are located at the two vertexes of the upper portion, and the installation positions of the wire inlet side and the wire outlet side are opposite; a commutation assembly is arranged in the cylinder body and is used for connecting the A-phase insert and the C-phase insert at the wire inlet side and the wire outlet side in a staggered manner, so that A-phase and C-phase commutation is realized; a connecting assembly is arranged in the cylinder body and used for connecting the B-phase inserts on the wire inlet side and the wire outlet side. According to the utility model, the interchange of conductor phase sequences is realized in the linear cylinder, the size of the phase change structure is reduced, the structure is more compact, the performance is more stable, and the development trend of miniaturization of high-voltage switch equipment is satisfied.

Description

TECHNICAL FIELD

[0001] The utility model relates to GIS equipment technical field especially relates to a GIS three -phase commutation assembly structure. BACKGROUND

[0002] The gas insulated metal enclosed switchgear (GIS) is mostly three -phase common box type design on the market currently, and the arrangement mode of three -phase conductor has two kinds of triangle and horizontal line, wherein the GIS equipment of three -phase triangle arrangement is gradually accepted by the market due to its simple structure, three -phase spare part commonality rate and the like advantages. However, in the actual engineering of three -phase common box GIS, the working condition that A phase and C phase need to be commutated at the incoming and outgoing line side is encountered, and the working condition of AC commutation at the incoming and outgoing line side is usually not easy to realize due to complex structure, especially the commutation in the same axial direction is more difficult to realize. The phase sequence arrangement of the incoming line side of the main transformer is ABC, but the required phase sequence of the outgoing line side is CBA, along with the trend of small -sized and high -parameter of high -voltage switch equipment, the requirement of power system on the reliability of high -voltage switch equipment is also higher and higher, and at present, an AC commutation device with compact structure, small volume, low cost, simple and labor -saving construction and good operation safety is urgently needed. SUMMARY

[0003] To solve the above problems, the utility model provides a kind of GIS three -phase commutation assembly structure, can realize AC commutation in the same axial direction, greatly reduce the volume of commutation assembly.

[0004] The utility model adopts the scheme as follows:

[0005] A kind of GIS three -phase commutation assembly structure, including cylinder, the two ends of the cylinder are equipped with basin type insulator on the same axis, are used as incoming line side and outgoing line side respectively;Two basin type insulators are all equipped with A phase insert, B phase insert and C phase insert in inverted triangular distribution, B phase insert is located at lower apex, A phase insert, C phase insert are located at upper two apexes and the installation positions of incoming line side and outgoing line side are opposite;The cylinder is equipped with commutation component, for staggered connection A phase insert and C phase insert of incoming line side, outgoing line side, realize A phase, C phase commutation;The cylinder is equipped with connecting component, for connecting B phase insert of incoming line side and outgoing line side.The utility model passes through the commutation component in cylinder, the position of incoming line side A phase, C phase is introduced from outgoing line side after internal commutation, to realize the different phase sequence of incoming line side, outgoing line side, meet the demand of connecting equipment.

[0006] The specific structure of the phase-changing assembly of the present invention is as follows: the phase-changing assembly includes an incoming-side phase-changing conductor 1, an incoming-side phase-changing conductor 2, an outgoing-side phase-changing conductor 1, an outgoing-side phase-changing conductor 2, and two intermediate conductors arranged side by side. The four phase-changing conductors are all arc-shaped, wherein one end of the incoming-side phase-changing conductor 2 is connected to the contact seat on the incoming-side A-phase insert, and the other end is bent toward the middle and downward and connected to the lower intermediate conductor, the other end of the lower intermediate conductor is connected to the outgoing-side phase-changing conductor 1, and the other end of the outgoing-side phase-changing conductor 1 is bent inwardly and upwardly and then connected to the outgoing-side A-phase insert through an end conductor; one end of the incoming-side phase-changing conductor 1 is connected to the contact seat on the incoming-side C-phase insert, and the other end is bent toward the middle and upwardly and connected to the upper intermediate conductor, the other end of the upper intermediate conductor is connected to the outgoing-side phase-changing conductor 2, and the other end of the outgoing-side phase-changing conductor 2 is bent outwardly and downward and then connected to the outgoing-side C-phase insert through an end conductor. The utility model realizes transposition connection by cleverly designing the shape of the phase-changing conductor and coordinating the upper and lower intermediate conductors, thereby changing the position relationship between the A-phase and C-phase conductors, thereby realizing adjustment from the ABC phase sequence on the incoming line side to the CBA phase sequence on the outgoing line side.

[0007] Furthermore, the connecting assembly includes a first guide rod, an intermediate conductor and a second guide rod connected in sequence from the incoming side to the outgoing side, one end of which is connected to the contact seat of the B-phase insert on the incoming side, and the other end is connected to the B-phase insert on the outgoing side through an end conductor.

[0008] The utility model realizes the interchange of conductor phase sequence in a straight-line cylinder, reduces the volume of the phase-changing structure, makes the structure more compact, and has more stable performance, thus meeting the development trend of miniaturization of high-voltage switchgear. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a front sectional view of the utility model;

[0010] Figure 2 It is a top sectional view of the utility model;

[0011] Figure 3 yes Figure 1 AA section view;

[0012] Figure 4 yes Figure 1 BB cross-sectional view;

[0013] Figure 5 This is a diagram of the present invention in use, with the arrow indicating the installation position of the phase-changing assembly structure of the present invention;

[0014] In the figure, 1. pot insulator, 2. A-phase insert, 3. B-phase insert, 4. cylinder, 5. incoming-side commutation conductor 1, 6. middle conductor, 7. outgoing-side commutation conductor 2, 8. end conductor, 9. C-phase insert, 10. second guide rod, 11. outgoing-side commutation conductor 1, 12. first guide rod, 13. incoming-side commutation conductor 2. DETAILED DESCRIPTION

[0015] The present invention will be described in detail below with reference to the accompanying drawings.

[0016] A GIS three-phase phase-changing assembly structure, such as Figures 1-5 As shown, it includes a cylindrical barrel 4 with two open ends and a pot insulator 1 installed on each end, serving as the incoming and outgoing sides, respectively, to connect the busbars. The two pot insulators 1 are each provided with an A-phase insert 2, a B-phase insert 3, and a C-phase insert 9 arranged in an inverted triangle, for connecting the A-phase, B-phase, and C-phase busbars, respectively. The A-phase insert and the C-phase insert on the incoming side are located at the two vertices above, from Figure 3 When viewing from right to left, phase A is on the left (i.e. Figure 1 The outer side of the middle), C phase is on the right side (i.e. Figure 1 The B-phase insert is located at the lower vertex; the A-phase insert and the C-phase insert on the outgoing side are located at the upper two vertices and are opposite to the positions on the incoming side. Figure 4 From the left to right perspective, phase A is on the left (i.e. Figure 1 The C phase is located on the right side (i.e. Figure 1 In order to achieve the phase A can be switched from the outside to the inside of the cylinder, and the phase C can be switched from the inside to the outside, a phase switching assembly is set in the cylinder.

[0017] The phase conversion assembly includes incoming line side phase conversion conductor one 5, incoming line side phase conversion conductor two 13, outgoing line side phase conversion conductor two 7, outgoing line side phase conversion conductor one 11, and two intermediate conductors 6 arranged in upper and lower rows, and the four phase conversion conductors are all arc-shaped. One end of the incoming line side phase conversion conductor two 13 is connected with the terminal of the incoming line side A-phase insert 2 located on the outer side, the other end is bent to the lower middle and connected with the lower intermediate conductor 6, the other end of the lower intermediate conductor 6 is connected with the outgoing line side phase conversion conductor one 11, the other end of the outgoing line side phase conversion conductor one 11 is bent to the upper inner side and connected with the A-phase insert 2 on the outgoing line side through the end conductor 8. One end of the incoming line side phase conversion conductor one 5 is connected with the terminal of the incoming line side C-phase insert 9 located on the inner side, the other end is bent to the upper middle and connected with the upper intermediate conductor 6, the other end of the upper intermediate conductor 6 is connected with the outgoing line side phase conversion conductor two 7, the other end of the outgoing line side phase conversion conductor two 7 is bent to the lower outer side and connected with the C-phase insert 9 on the outgoing line side through the end conductor. Through the above connection relationship, the A-phase can be converted from the outer side to the inner side, and the C-phase can be converted from the inner side to the outer side, so as to realize the AC phase conversion operation.

[0018] The B-phase does not need to be converted, so the incoming line side and outgoing line side B-phase inserts are directly connected through the connecting assembly. The connecting assembly includes a first guide rod 12, an intermediate conductor 6 and a second guide rod 10 connected in sequence from left to right, the outer end of the first guide rod 12 is connected with the terminal of the incoming line side B-phase insert 3, and the outer end of the second guide rod 10 is connected with the B-phase insert 3 on the outgoing line side through the end conductor 8. In order to prevent interference with the phase conversion conductors, the first guide rod and the second guide rod are slightly bent downward, and a mounting space is reserved for the phase conversion assembly after assembly.

Claims

1. A GIS three-phase phase-changing assembly structure, comprising a cylinder (4), characterized in that: The two ends of the cylinder (4) located on the same axis are equipped with pot-type insulators (1), which serve as the incoming line side and the outgoing line side respectively; the two pot-type insulators (1) are both provided with A-phase inserts (2), B-phase inserts (3) and C-phase inserts (9) distributed in an inverted triangle, the B-phase insert (3) is located at the lower vertex, the A-phase insert (2) and the C-phase insert (9) are located at the two upper vertices, and the installation positions of the incoming line side and the outgoing line side are opposite; the cylinder (4) is provided with a phase-changing component for staggeredly connecting the A-phase inserts and the C-phase inserts on the incoming line side and the outgoing line side to realize phase-changing between the A-phase and the C-phase; the cylinder (4) is provided with a connecting component for connecting the B-phase inserts on the incoming line side and the outgoing line side.

2. The GIS three-phase commutation assembly structure according to claim 1, characterized in that: The phase-changing assembly comprises an incoming-side phase-changing conductor (5), an incoming-side phase-changing conductor (13), an outgoing-side phase-changing conductor (11), an outgoing-side phase-changing conductor (7), and two middle conductors (6) arranged side by side. The four phase-changing conductors are all arc-shaped. One end of the incoming-side phase-changing conductor (13) is connected to the contact seat on the incoming-side A-phase insert (2), and the other end is bent downwardly and connected to the lower middle conductor (6). The other end of the lower middle conductor is connected to the outgoing-side phase-changing conductor (11). The other end of the outgoing-side commutation conductor (11) is bent inwardly and upwardly and then connected to the A-phase insert (2) on the outgoing-side through the end conductor (8); one end of the incoming-side commutation conductor (5) is connected to the contact seat on the incoming-side C-phase insert (9), and the other end is bent upwardly and connected to the upper middle conductor (6); the other end of the upper middle conductor is connected to the outgoing-side commutation conductor (7); the other end of the outgoing-side commutation conductor (2) is bent outwardly and downwardly and then connected to the C-phase insert (9) on the outgoing-side through the end conductor.

3. The GIS three-phase commutation assembly structure according to claim 1 is characterized in that: The connection assembly comprises a first guide rod (12), an intermediate conductor (6) and a second guide rod (10) connected in sequence from the incoming line side to the outgoing line side, one end of which is connected to the contact seat of the B-phase insert (3) on the incoming line side, and the other end of which is connected to the B-phase insert (3) on the outgoing line side via an end conductor.

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