Novel oil-immersed upright current transformer primary conductive device

Abstract

The utility model relates to a novel primary conductive device for an oil-immersed upright current transformer, which is characterized in that one end of a four-petal aluminum pipe is provided with four aluminum sheet groups P1, C2 ', C1 and P2', the length directions of the P1-end aluminum sheet group, the C2 '-end aluminum sheet group and the P2'-end aluminum sheet group are the same and are vertical to the length direction of the C1-end aluminum sheet group, and the other end of the four-petal aluminum pipe is provided with four aluminum sheet groups C2, P1 ', P2 and C1'. The P1 '-end aluminum sheet group, the P2'-end aluminum sheet group and the C1 '-end aluminum sheet group are the same in length direction and are perpendicular to the C2-end aluminum sheet group in length direction, the C2-end aluminum sheet group and the C1-end aluminum sheet group are the same in length direction, and the P1'-end aluminum sheet group, the C1 '-end aluminum sheet group, the P2'-end aluminum sheet group and the C2 '-end aluminum sheet group are respectively connected with the corresponding bent conductive plates. And the P1-end aluminum sheet group, the C1-end aluminum sheet group, the P2-end aluminum sheet group and the C2-end aluminum sheet group are respectively connected with the corresponding straight conductive plates. According to the utility model, materials are saved, and the connection is more convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to a mutual -inductor manufacturing field, concretely speaking, a novel oil-immersed upright type current transformer primary conduction device. BACKGROUND

[0002] At present, the primary winding of the oil-immersed upright type current transformer is generally two turns structure, when the current is small and the accuracy level is high, such as the rated current ratio is 2*150 / 5A, the accuracy level is 0.2S level, 5P30 level, and the rated load is generally 50VA, under the condition of fixed product structure, it is very difficult to meet the technical requirements of high-voltage line protection with the existing traditional oil-immersed upright type current transformer of two turns or four turns structure.

[0003] The patent CN204067025U discloses a novel oil-immersed upright type current transformer four-turn conduction device, but the aluminum pipes of each petal need to be welded with aluminum conduction sheets and flexible connections through argon arc welding, wherein the flexible connection is formed by thick welding of aluminum plate crimping aluminum belt to realize the rotation and distortion during connection, and the structure needs to be further simplified. UTILITY MODEL CONTENT

[0004] The utility model discloses a novel oil-immersed upright type current transformer primary conduction device, which can realize good fitting of the corresponding end conduction plate through the structural combination design of each end aluminum sheet group and the conduction plate structure design of the bent plate and the straight plate, so that it is not necessary to set the flexible connection for rotation and distortion, the material is saved, and the connection is more convenient.

[0005] The utility model aims at realizing the following technical scheme:

[0006] A novel oil-immersed upright type current transformer primary conduction device, comprising four-petal aluminum pipes in U-shaped structure, wherein one end of the four-petal aluminum pipes is sequentially provided with P1, C2', C1 and P2' four groups of aluminum sheet groups connected with corresponding petals of the four-petal aluminum pipes along the circumferential direction, and the P1 end aluminum sheet group, the C2' end aluminum sheet group and the P2' end aluminum sheet group have the same length direction and are perpendicular to the length direction of the C1 end aluminum sheet group; the other end of the four-petal aluminum pipes is sequentially provided with C2, P1', P2 and C1' four groups of aluminum sheet groups connected with corresponding petals of the four-petal aluminum pipes (1) along the circumferential direction, and the P1' end aluminum sheet group, the P2 end aluminum sheet group and the C1' end aluminum sheet group have the same length direction and are perpendicular to the length direction of the C2 end aluminum sheet group; the length direction of the C2 end aluminum sheet group and the C1 end aluminum sheet group is the same; the P1' end aluminum sheet group, the C1' end aluminum sheet group, the P2' end aluminum sheet group and the C2' end aluminum sheet group are connected with corresponding conduction plates in the shape of bent plate; and the P1 end aluminum sheet group, the C1 end aluminum sheet group, the P2 end aluminum sheet group and the C2 end aluminum sheet group are connected with corresponding conduction plates in the shape of straight plate.

[0007] The tail end of the bending plate-shaped conductive plate is connected with the corresponding aluminum sheet group through a first argon arc welding part, and the tail end of the straight plate-shaped conductive plate is connected with the corresponding aluminum sheet group through a second argon arc welding part.

[0008] When the four-limb aluminum pipe is folded at both ends, the conductive plate at the P2' end is connected with the conductive plate at the C1' end, the conductive plate at the C1 end is connected with the conductive plate at the C2 end, and the conductive plate at the P1' end is connected with the conductive plate at the C2' end.

[0009] The conductive plates at the P2' end and the C1' end, the conductive plates at the C1 end and the C2 end, and the conductive plates at the P1' end and the C2' end are fixed through bolts.

[0010] The utility model discloses the advantages and positive effects are:

[0011] 1、 the utility model discloses compared with prior art (such as patent CN204067025U), the structure combination design of its each end aluminum sheet group and the conductive plate structure design of bending plate and straight plate can realize the good adhesion of corresponding end conductive plate, thereby not again through the aluminum plate pressure joint aluminum band thick welding forms the soft connection, saves the material.

[0012] 2、 the utility model discloses the conductive plate structure design of bending plate and straight plate is convenient for bolted mounting, and compared with prior art (such as patent CN204067025U) connection is also more convenient. DRAWINGS

[0013] Figure 1 It is the structure schematic diagram of the utility model,

[0014] Figure 2 It is Figure 1 the enlarged view of K in,

[0015] Figure 3 It is Figure 1 A-A view in,

[0016] Figure 4 It is Figure 1 B-B view in,

[0017] Figure 5 It is Figure 2 the conductive sheet connection schematic diagram of C1' end, P1' end, C2' end, P2' end in,

[0018] Figure 6 It is Figure 2 the conductive sheet connection schematic diagram of C1 end, P1 end, C2 end, P2 end in,

[0019] Figure 7 It is Figure 6 the left view of conductive sheet connection structure in.

[0020] Wherein, 1 is four petal aluminum pipe, 101 is the bending plate, 102 is the first argon arc welding part, 103 is the straight plate, 104 is the second argon arc welding part. DETAILED DESCRIPTION

[0021] The utility model will be further described in connection with the drawings.

[0022] As Figures 1 to 7 shown, the utility model discloses a U-shaped four petal aluminum pipe 1, and as Figure 3 Shown, the four petal aluminum pipe 1 one end is provided with P1, C2', C1, P2' four groups of aluminum sheet groups corresponding petal connection of four petal aluminum pipe 1 along the circumferential direction in proper order, and P1 end aluminum sheet group, C2' end aluminum sheet group and P2' end aluminum sheet group length direction is same and all with C1 end aluminum sheet group length direction is perpendicular, as Figure 4 Shown, the other end of the four petal aluminum pipe 1 is provided with C2, P1', P2, C1' four groups of aluminum sheet groups corresponding petal connection of four petal aluminum pipe 1 along the circumferential direction in proper order, and P1' end aluminum sheet group, P2 end aluminum sheet group and C1' end aluminum sheet group length direction is same and all with C2 end aluminum sheet group length direction is perpendicular, C2 end aluminum sheet group and C1 end aluminum sheet group length direction is same, as Figure 5 Shown, P1' end aluminum sheet group, C1' end aluminum sheet group, P2' end aluminum sheet group, C2' end aluminum sheet group is connected with corresponding conductive plate of the shape of bending plate 101 respectively, as Figures 6 to 7 Shown, P1 end aluminum sheet group, C1 end aluminum sheet group, P2 end aluminum sheet group, C2 end aluminum sheet group is connected with corresponding conductive plate of the shape of straight plate 105 respectively.

[0023] As Figure 5 Shown, the tail end of the conductive plate of the shape of bending plate 101 in the embodiment is connected with corresponding aluminum sheet group through the first argon arc welding part 102, as Figures 6 to 7 Shown, the tail end of the conductive plate of the shape of straight plate 105 is connected with corresponding aluminum sheet group through the second argon arc welding part 104.

[0024] When the four petal aluminum pipe 1 both ends are folded, P2' end conductive plate is connected with C1' end conductive plate, C1 end conductive plate is connected with C2 end conductive plate, P1' end conductive plate is connected with C2' end conductive plate, the utility model realizes the mutual connection between each petal of four petal aluminum pipe 1 through the above-mentioned joint structure, and the conductive plate of P1 end and the conductive plate of P2 end are used for connecting with external circuit respectively.

[0025] In the embodiment, P2' end conductive plate and C1' end conductive plate, C1 end conductive plate and C2 end conductive plate and P1' end conductive plate and C2' end conductive plate are all fixed through bolt.

[0026] In addition, the utility model can set distinguishing marks on each end conducting sheet according to actual needs to avoid connection errors of workers.

[0027] The working principle of the utility model is as follows:

[0028] The utility model can meet the technical requirements of small current ratio and high precision which cannot be met by existing two-turn structures, meanwhile, the utility model realizes good adhesion of corresponding end conducting sheets through structural combination design of each end aluminum sheet group and conducting sheet structure design of the bending plate 103 and the straight plate 105, so that it is unnecessary to set soft connections of rotation and distortion again, material is saved, and the conducting sheet structure design of the bending plate 103 and the straight plate 105 is also convenient for bolt mounting, and connection is more convenient.

Claims

1. A novel oil-immersed vertical current transformer primary conduction device, comprising a U-shaped four-lobed aluminum tube, characterized in that: One end of the four-lobed aluminum tube (1) is provided with four sets of aluminum sheets, P1, C2′, C1, and P2′, which are connected to the corresponding lobes of the four-lobed aluminum tube (1) in sequence along the circumferential direction. The aluminum sheet sets at the P1, C2′, and P2′ ends have the same length direction and are all perpendicular to the length direction of the aluminum sheet set at the C1 end. The other end of the four-lobed aluminum tube (1) is provided with four sets of aluminum sheets, C2′, P1′, P2′, and C1′, which are connected to the corresponding lobes of the four-lobed aluminum tube (1) in sequence along the circumferential direction. The length directions of the aluminum sheet group at end P2, end P2, and end C1′ are the same and perpendicular to the length direction of the aluminum sheet group at end C2. The length directions of the aluminum sheet group at end C2 and end C1 are the same. The aluminum sheet groups at end P1′, end C1′, end P2′, and end C2′ are respectively connected to the corresponding conductive plates in the shape of bent plates (101). The aluminum sheet groups at end P1, end C1, end P2, and end C2 are respectively connected to the corresponding conductive plates in the shape of straight plates (105).

2. The novel oil-immersed vertical current transformer primary conduction device according to claim 1, characterized in that: The tail end of the conductive plate in the shape of the bent plate (101) is connected to the corresponding aluminum sheet group through the first argon arc welding part (102), and the tail end of the conductive plate in the shape of the straight plate (105) is connected to the corresponding aluminum sheet group through the second argon arc welding part (104).

3. The novel oil-immersed vertical current transformer primary conduction device according to claim 1, characterized in that: When the two ends of the four-lobed aluminum tube (1) are closed, the conductive plate at the P2′ end is connected to the conductive plate at the C1′ end, the conductive plate at the C1 end is connected to the conductive plate at the C2 end, and the conductive plate at the P1′ end is connected to the conductive plate at the C2′ end.

4. The novel oil-immersed vertical current transformer primary conduction device according to claim 3, characterized in that: The P2′ end conductive plate is fixed to the C1′ end conductive plate, the C1 end conductive plate is fixed to the C2 end conductive plate, and the P1′ end conductive plate is fixed to the C2′ end conductive plate.

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