Novel casing pipe arrangement structure
By using the L-shaped lifting seat and wire clamp structure on the transformer box wall to increase the insulation distance between the high-voltage neutral point sleeve and the high-voltage A-phase sleeve, the problem of the external insulation distance requirement of high-altitude and small capacity transformer is solved, and the structure is realized Simplicity, easy installation and shortened fuel tank length.
Patent Information
- Application Number
- CN202323284202.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-04
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2033-12-04
AI Technical Summary
High-altitude and small capacity transformer products have challenges in meeting the external insulation distance requirements, especially the limited arrangement position of the high-voltage neutral point casing, which cannot meet the increased demand for high-altitude external insulation distance.
The high-voltage neutral point sleeve is arranged on the transformer box wall by an L-shaped lifting seat, and a triangular structure is formed through wire clamps and support members to increase the outer insulation distance between the high-voltage A-phase bushing and the high-voltage neutral point sleeve, combined with 0 The transformer is connected with a lifting seat and an L-shaped lifting seat. The high-voltage neutral point lead is fixed by a wire clip to ensure the insulation distance.
It achieves the simple structure, convenient installation, beautiful appearance, shorten the length of the fuel tank, saves steel plates and oil, and is widely used in high-altitude small-capacity transformer products.
Smart Images
Figure CN222281765U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a novel bushing arrangement structure, which is suitable for transformer products with small capacity at high altitudes and belongs to the technical field of transformers. Background Art
[0002] The high-voltage and high-voltage neutral point bushings of conventional 110kV transformer products are arranged on the box cover on the high-voltage side of the transformer through a lifting seat. When the user specifically requires that the high-voltage neutral point bushing be arranged on the low-voltage side of the transformer, or the high-voltage neutral point arranged on the high-voltage side cannot meet the external insulation distance requirements, the high-voltage neutral point bushing can also be arranged on the low-voltage side. With the expansion of the transformer sales market, the types and categories of transformer products are becoming more and more diverse. Especially for transformer products with small capacity at high altitudes, the transformer phase spacing itself is small, and coupled with the requirements for external insulation distance at high altitudes, the principle that the external insulation distance increases by 1% for every 100m increase in altitude, the external insulation distance requirements are even greater. In order to meet the insulation distance requirements, this requires our designers to develop a new type of bushing arrangement structure. Utility Model Content
[0003] The utility model aims to provide a novel bushing arrangement structure. When the transformer capacity is small and the external insulation distance requirement is large, in order to meet the external insulation distance requirement, the high-voltage neutral point bushing is arranged on the high-voltage side of the transformer through an L-shaped riser on the transformer box wall, thereby increasing the external insulation distance between the high-voltage A-phase bushing and the high-voltage neutral point bushing, solving the problems existing in the background technology.
[0004] The technical solution of the utility model is:
[0005] A novel bushing arrangement structure comprises a 0-phase riser, an L-shaped riser, a first conductor clamp, a second conductor clamp, a high-voltage neutral point lead and a third conductor clamp. The 0-phase riser is connected to one end of the L-shaped riser, and a high-voltage neutral point bushing is arranged inside the 0-phase riser and the L-shaped riser. The other end of the L-shaped riser is welded to the oil tank wall. One end of the high-voltage neutral point lead is connected to the on-load switch, and the other end is introduced into the L-shaped riser and connected to the terminal on the top of the high-voltage neutral point bushing. The high-voltage neutral point lead is fixed in the oil tank by a third conductor clamp, and the third conductor clamp is arranged close to the oil tank wall. The high-voltage neutral point lead is fixed in the center of the L-shaped riser by a first conductor clamp and a second conductor clamp in the L-shaped riser.
[0006] The first wire clamp has fixing holes at both ends and two connection holes 1 in the middle; the second wire clamp has a wire slot in the middle and connection holes 2 at both ends, the connection holes 2 match the connection holes 1, the first wire clamp and the second wire clamp are connected through the connection holes 1 and the connection holes 2, and the high-voltage neutral point lead is arranged in the wire slot.
[0007] A lead-clamping fixing plate is welded on the inner wall of the L-shaped rising seat, and a wire clamp is connected to the lead-clamping fixing plate through a fixing hole.
[0008] A support is provided below the wire clamp three, and a lead hole and a connection hole three are provided on the wire clamp three, and the high-voltage neutral point lead passes through the lead hole; a connection hole four is provided on the support, and the wire clamp three is connected to the support through the connection holes three and four to form a triangular structure, and the wire clamp three increases stability through the support.
[0009] The conductor clamp three and the support are fixed on the transformer body clamp through a clamp fixing plate and an angle steel.
[0010] The utility model has the beneficial effects of simple structure, convenient installation and operation, beautiful appearance, and shortens the length of the oil tank, which saves steel plates for the oil tank and transformer oil. It has been widely used in small-capacity transformer products at high altitudes. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 This is a schematic diagram of the installation structure of the utility model;
[0012] Figure 2 This is a top view of the installation structure of the utility model;
[0013] Figure 3 This is the front view of the lifting seat for the mutual inductor of the utility model;
[0014] Figure 4 It is a top view of the rising seat for the mutual inductor of the utility model;
[0015] Figure 5 This is the front view of the L-shaped riser of the utility model;
[0016] Figure 6 This is a top view of the L-shaped riser of the utility model;
[0017] Figure 7 This is a structural schematic diagram of a wire clamp of the utility model;
[0018] Figure 8 This is a side view of the wire clamp of the utility model;
[0019] Fig. 9 This is a schematic diagram of the structure of the second wire clamp of the utility model;
[0020] Fig.10 This is a top view of the second wire clamp of the utility model;
[0021] Fig.11 This is a schematic diagram of the third structure of the wire clamp of the utility model;
[0022] Fig.12 This is a schematic diagram of the structure of the support member of the utility model;
[0023] In the figure: 0 mutual inductor lifting seat 1, L-shaped lifting seat 2, wire clamp one 3, wire clamp two 4, high-voltage neutral point lead 5, wire clamp three 6, support 7, on-load switch 8, lead clamping fixing plate 9, wire trough 10, fixing hole 11, connecting hole one 12, connecting hole two 13, high-voltage neutral point bushing 14, oil tank center line 15, lead hole 16, connecting hole three 17, connecting hole four 18. DETAILED DESCRIPTION
[0024] The present invention will be further described below through examples in conjunction with the accompanying drawings.
[0025] See attached Figure 1-12 A new type of bushing arrangement structure comprises a 0 mutual inductor raising seat 1, an L-shaped raising seat 2, a wire clamp one 3, a wire clamp two 4, a high-voltage neutral point lead 5 and a wire clamp three 6, wherein the 0 mutual inductor raising seat 1 is connected to one end of the L-shaped raising seat 2, and a high-voltage neutral point bushing 14 is arranged inside the 0 mutual inductor raising seat 1 and the L-shaped raising seat 2, and the other end of the L-shaped raising seat 2 is welded to the oil tank wall; one end of the high-voltage neutral point lead 5 is connected to the on-load switch 8, and the other end is introduced into the L-shaped raising seat 2 and connected with the terminal at the top of the high-voltage neutral point bushing 14; the high-voltage neutral point lead 5 is fixed in the oil tank by the wire clamp three 6, and the wire clamp three 6 is arranged close to the oil tank wall; the high-voltage neutral point lead 5 is fixed in the central position of the L-shaped raising seat 2 by the wire clamp one 3 and the wire clamp two 4 in the L-shaped raising seat 2.
[0026] Preferably, the wire clamp 1 3 is provided with fixing holes 11 at both ends, and two connecting holes 12 are provided in the middle; the wire clamp 2 4 is provided with a wire groove 10 in the middle, and connecting holes 2 13 are provided at both ends, and the connecting holes 2 13 match the connecting holes 1 12. The wire clamp 1 3 and the wire clamp 2 4 are connected through the connecting holes 12 and the connecting holes 2 13, and the high-voltage neutral point lead 5 is arranged in the wire groove 10.
[0027] Preferably, a lead clamping fixing plate 9 is welded on the inner wall of the L-shaped riser 2 , and the wire clamp 3 is connected to the lead clamping fixing plate 9 through a fixing hole 11 .
[0028] Preferably, a support member 7 is provided below the wire clamp 3 6, and a lead hole 16 and a connection hole 3 17 are provided on the wire clamp 6, and the high-voltage neutral point lead 5 passes through the lead hole 16; a connection hole 4 18 is provided on the support member 7, and the wire clamp 3 6 is connected to the support member 7 through the connection hole 3 17 and the connection hole 4 18 to form a triangular structure, and the wire clamp 3 6 increases stability through the support member 7.
[0029] Preferably, the conductor clamp 3 6 and the support member 7 are fixed to the transformer body clamp via a clamp fixing plate and an angle steel.
[0030] After the high-voltage neutral point lead 5 is led out from the neutral point lead-out end of the on-load switch 8, the high-voltage neutral point lead 5 is fixed on the wire clamp 3 6 at a position as close to the oil tank wall as possible. Because the wire clamp 3 6 is long, a support 7 is required to increase stability. After the high-voltage neutral point lead 5 is introduced into the L-shaped riser 2, in order to ensure the insulation distance from the high-voltage neutral point lead to the riser wall, the high-voltage neutral point lead 5 is fixed to the center of the L-shaped riser 2 with the wire clamp 1 3 and the wire clamp 2 4, and then the high-voltage neutral point lead is led to the terminal head at the top of the high-voltage neutral point bushing 14 through the 0 mutual inductor with the riser 1.
[0031] The utility model increases the distance between the high-voltage neutral point bushing and the high-voltage A-phase bushing by welding an L-shaped riser on the oil tank wall, thereby meeting the insulation distance requirements of small-capacity transformers at high altitudes. At the same time, a clamping lead fixing plate is welded at a suitable position on the inner wall of the L-shaped riser, and the high-voltage neutral point lead 5 is firmly fixed in the center of the L-shaped riser 2 by wire clamp 1 3 and wire clamp 2 4, ensuring the insulation distance from the high-voltage neutral point lead to the riser wall. The utility model has a simple structure, convenient installation and operation, and beautiful appearance. At the same time, the length of the oil tank is shortened, which saves both steel plates and transformer oil. It has been widely used in transformer products with small capacity at high altitudes.
Claims
1. A new type of casing arrangement structure, characterized in that: The invention comprises a 0-phase mutual inductor lifting seat (1), an L-shaped lifting seat (2), a first wire clamp (3), a second wire clamp (4), a high-voltage neutral point lead (5) and a third wire clamp (6), wherein the 0-phase mutual inductor lifting seat (1) and the L-shaped lifting seat (2) are connected at one end, the 0-phase mutual inductor lifting seat (1) and the L-shaped lifting seat (2) are provided with a high-voltage neutral point bushing (14) inside, and the other end of the L-shaped lifting seat (2) is welded to the oil tank wall; one end of the high-voltage neutral point lead (5) is connected to the on-load switch (8), and the other end is introduced into the L-shaped lifting seat (2) and connected to the wiring head at the top of the high-voltage neutral point bushing (14); the high-voltage neutral point lead (5) is fixed in the oil tank by the third wire clamp (6), and the third wire clamp (6) is arranged close to the oil tank wall; the high-voltage neutral point lead (5) is fixed in the central position of the L-shaped lifting seat (2) by the first wire clamp (3) and the second wire clamp (4) in the L-shaped lifting seat (2).
2. A novel casing arrangement structure according to claim 1, characterized in that: The first conductor clamp (3) is provided with fixing holes (11) at both ends and two first connection holes (12) in the middle; the second conductor clamp (4) is provided with a wire groove (10) in the middle and second connection holes (13) at both ends, the second connection hole (13) and the first connection hole (12) match each other, the first conductor clamp (3) and the second conductor clamp (4) are connected via the first connection hole (12) and the second connection hole (13), and the high-voltage neutral point lead (5) is arranged in the wire groove (10).
3. A novel casing arrangement structure according to claim 2, characterized in that: A lead clamping fixing plate (9) is welded on the inner wall of the L-shaped elevation seat (2), and the first wire clamp (3) is connected to the lead clamping fixing plate (9) through a fixing hole (11).
4. A novel casing arrangement structure according to claim 1 or 2, characterized in that: A support member (7) is provided below the third conductor clamp (6), and a lead hole (16) and a third connection hole (17) are provided on the third conductor clamp (6), and the high-voltage neutral point lead (5) passes through the lead hole (16); a fourth connection hole (18) is provided on the support member (7), and the third conductor clamp (6) and the support member (7) are connected via the third connection hole (17) and the fourth connection hole (18), forming a triangular structure.