Three-switch wiring structure

Abstract

The invention relates to a three-switch wiring structure. The three-switch wiring structure belongs to the technical field of wiring structures. The three-switch wiring structure comprises a branching line, an isolator is arranged on the branching line, the isolator comprises a magnetic block, an inner insulating ring, an insulating filling block and an outer insulating ring, three three-phase switches are arranged on the same side of an oil tank and are arranged in parallel with three-phase coils in a staggered mode, the coil lead outgoing positions face the corresponding switches as much as possible, and the three-phase switches are arranged in a staggered mode. Therefore, most of the tapping wires are accessed to the switch nearby, and a small part of the tapping wires which are far away from the corresponding switch are led to the corresponding switch position from the lower part of the switch and the outside of the coil under the condition that the insulation distance is ensured, so that the insulation distance between the leads is ensured, and the wiring is convenient.

Description

Technical Field

[0001] The invention belongs to the technical field of wiring structures, and in particular relates to a three-switch wiring structure. Background Art

[0002] In order to input different voltages, the input winding can also use multiple windings to adapt to different input voltages. At the same time, multiple windings can also be used to output different voltages. Three independent windings, through different connection methods (such as: star, triangle), input three-phase AC power supply, and its output is also the same, this is a three-phase transformer.

[0003] The transformer oil in the three-phase transformer tank is used for heat dissipation and insulation to prevent the leads from contacting each other. In order to meet specific requirements, a three-phase transformer needs to use three three-phase switches. At this time, the placement of the three switches is particularly critical. It is necessary to ensure the insulation distance between the leads so that the three-phase tapping wire can be smoothly connected to the switch, and to ensure that the internal space of the tank is fully utilized to avoid unnecessary waste of space. The three three-phase switches are usually arranged on the same side of the tank, but when the three three-phase switches are arranged on the same side of the tank, the insulation distance between the leads is difficult to maintain and it is inconvenient to wire.

[0004] Therefore, a three-switch wiring structure is proposed to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a three-switch wiring structure with simple structure and reasonable design in order to solve the above problems.

[0006] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0007] A three-switch wiring structure includes a tapping wire, on which an isolator is arranged, the isolator includes a magnetic block, an inner insulating ring, an insulating filling block, and an outer insulating ring, the magnetic blocks and the insulating filling blocks are each provided in multiple groups, the multiple groups of magnetic blocks and the multiple groups of insulating filling blocks are spaced apart, and adjacent magnetic blocks and insulating filling blocks are fixedly connected, a collar structure is formed between the multiple groups of inner insulating rings and the multiple groups of insulating filling blocks, the inner insulating ring is fixedly arranged at the inner ring of the collar structure, the outer insulating ring is fixedly covered at the outer ring of the collar structure, the magnetic poles of the multiple groups of magnetic blocks on one side away from the inner insulating ring are the same, and the inner insulating ring is movably sleeved at the outer ring of the tapping wire.

[0008] As a further optimization solution of the present invention, the inner insulating ring is compressed and pressed between the inner ring of the sleeve structure and the outer ring of the tapping wire.

[0009] As a further optimization solution of the present invention, the angles between the multiple groups of magnetic blocks are less than 20°.

[0010] As a further optimization scheme of the present invention, the tapping wire is arranged in the oil tank, and the tapping wire includes a first A-phase tapping wire, a first B-phase tapping wire, a first C-phase tapping wire, a second A-phase tapping wire, a second B-phase tapping wire, a second C-phase tapping wire, a third A-phase tapping wire, a third B-phase tapping wire, and a third C-phase tapping wire.

[0011] As a further optimization scheme of the present invention, the oil tank is provided with a first three-phase switch, a second three-phase switch, a third three-phase switch, an iron core and a coil, the coil is wound on the iron core, the first three-phase switch, the second three-phase switch and the third three-phase switch are arranged in sequence on the same side of the oil tank body, and the coil is provided with three groups, the first three-phase switch, the second three-phase switch and the third three-phase switch and the three groups of coils are placed in parallel and staggered.

[0012] As a further optimization scheme of the present invention, the three groups of coils are sequentially distributed into phase A, phase B and phase C, and phase A, phase B and phase C are close to the first three-phase switch, the second three-phase switch and the third three-phase switch respectively.

[0013] As a further optimization scheme of the present invention, the first A-phase tap line and the first B-phase tap line are connected to the first three-phase switch nearby, the first C-phase tap line is led down to a height below the second three-phase switch and passes through the lower part of the second three-phase switch, and then is led up to connect to the first three-phase switch, the second B-phase tap line and the second C-phase tap line are connected to the second three-phase switch nearby, the second A-phase tap line is led down to a height below the first three-phase switch and passes through the lower part of the first three-phase switch, and then is led up to connect to the second three-phase switch, the third C-phase tap line is connected to the third three-phase switch nearby, the third A-phase tap line and the third B-phase tap line are wound around the outside of the coil and connected to the third three-phase switch 3 from one side of the oil tank.

[0014] The beneficial effects of the present invention are as follows: the three three-phase switches of the present invention are arranged on the same side of the oil tank, and are placed parallel and staggered with the three-phase coils. The lead ends of the coils are arranged as much as possible toward the corresponding switches, so that most of the tap lines are connected to the switches nearby. For a small number of tap lines that are far away from the corresponding switches, they are led from the bottom of the switch and the outside of the coil to the corresponding switch position while ensuring the insulation distance, thereby ensuring the insulation distance between the leads and facilitating wiring. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-switch wiring structure of the present invention;

[0016] Figure 2 The present invention Figure 1 Enlarged view of the middle isolator;

[0017] Figure 3 The present invention Figure 2 Cross-sectional view of the middle isolator;

[0018] Figure 4 It is a structural schematic diagram of two adjacent groups of isolators of the present invention when they are arranged in parallel;

[0019] Figure 5 is a schematic structural diagram of two adjacent groups of isolators arranged in parallel in Example 2 of the present invention;

[0020] Figure 6 It is a structural diagram of the arrangement of the tapping line in the oil tank of the present invention.

[0021] In the figure: tapping line 100, isolator 101, magnetic block 102, inner insulating ring 103, insulating filling block 104, outer insulating ring 105, first three-phase switch 1, second three-phase switch 2, third three-phase switch 3, oil tank 4, iron core 5, coil 6, first A-phase tapping line 7, first B-phase tapping line 8, first C-phase tapping line 9, second A-phase tapping line 10, second B-phase tapping line 11, second C-phase tapping line 12, third A-phase tapping line 13, third B-phase tapping line 14, third C-phase tapping line 15. DETAILED DESCRIPTION

[0022] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0023] Example 1

[0024] like Figures 1 to 6 As shown, a three-switch wiring structure, the three switches used in the present invention mainly realize the voltage regulation, phase regulation and loop closing functions in the distribution network. It is used to solve the problems of unstable voltage in the distribution network, unreasonable natural distribution of power flow in the line, and long power supply recovery period of the fault line.

[0025] The above-mentioned three-switch wiring structure includes a tapping line 100, on which an isolator 101 is arranged. The isolator 101 includes a magnetic block 102, an inner insulating ring 103, an insulating filling block 104, and an outer insulating ring 105. The magnetic blocks 102 and the insulating filling blocks 104 are each provided with multiple groups, and the multiple groups of magnetic blocks 102 and the multiple groups of insulating filling blocks 104 are spaced apart, and the adjacent magnetic blocks 102 and insulating filling blocks 104 are fixedly connected. The multiple groups of inner insulating rings 103 and the multiple groups of insulating filling blocks 104 form a ring structure, the inner insulating ring 103 is fixedly arranged at the inner ring of the ring structure, and the outer insulating ring 105 is fixedly covered at the outer ring of the ring structure for protecting the magnetic block 102. The magnetic poles of the multiple groups of magnetic blocks 102 away from the inner insulating ring 103 are the same, and the inner insulating ring 103 is movably sleeved at the outer ring of the tapping line 100.

[0026] In the present invention, an isolator 101 is provided on the tap line 100. The isolator 101 is arranged on the tap lines 100 that are close to each other. The isolator 101 uses a ring structure to keep the tap lines 100 that are close to each other away from each other, thereby avoiding the phenomenon that the tap lines 100 that are close to each other are close to each other, and ensuring that the insulation distance between adjacent tap lines 100 is sufficient.

[0027] For example, when the sides of the multiple groups of magnetic blocks 102 on the collar structure away from the tap wires 100 are all N poles, the like poles repel each other so that the adjacent tap wires 100 can be relatively far away from each other and not touch each other.

[0028] It should be noted that the magnetic force of the magnetic block 102 is relatively small and has a negligible effect on the device body. It is only used to prevent adjacent tapping wires 100 from being adjacent to each other.

[0029] The ring structure can be distributed in multiple groups at equal distances on the tap line 100, thereby ensuring that the tap lines 100 within a certain distance will not be close to each other. The ring structure only needs to be set on a section of the tap lines 100 that are close to each other, and does not need to be arranged on the entire tap line 100. It has low cost and is easy to operate.

[0030] Furthermore, the inner insulating ring 103 is compressed and pressed between the inner ring of the collar structure and the outer ring of the tap line 100, so that the collar structure can be stably installed on the outer ring of the tap line 100 without sliding, thereby avoiding the phenomenon that the collar structure is easily lubricated and moved in the oil.

[0031] Furthermore, the angles between the multiple groups of magnetic blocks 102 are less than 20 degrees, which ensures that adjacent ring structures can generate mutually repelling forces no matter which sides they face.

[0032] Example 2

[0033] For example, when the sides of the multiple groups of magnetic blocks 102 on the collar structure away from the tap wires 100 are all N poles, the like poles repel each other so that the adjacent tap wires 100 can be relatively far away from each other and not touch each other.

[0034] Example 3

[0035] The tapping line 100 is arranged in the oil tank 4, and the tapping line 100 includes a first A-phase tapping line 7, a first B-phase tapping line 8, a first C-phase tapping line 9, a second A-phase tapping line 10, a second B-phase tapping line 11, a second C-phase tapping line 12, a third A-phase tapping line 13, a third B-phase tapping line 14, and a third C-phase tapping line 15.

[0036] The oil tank 4 is provided with a first three-phase switch 1, a second three-phase switch 2, a third three-phase switch 3, an iron core 5 and a coil 6. The coil 6 is wound on the iron core 5. The first three-phase switch 1, the second three-phase switch 2 and the third three-phase switch 3 are arranged in sequence on the same side of the oil tank 4 body. The coil 6 is provided with three groups. The first three-phase switch 1, the second three-phase switch 2 and the third three-phase switch 3 and the three groups of coils 6 are placed in parallel and staggered.

[0037] The three groups of coils 6 are sequentially distributed into phase A, phase B and phase C, and phase A, phase B and phase C are close to the first three-phase switch 1, the second three-phase switch 2 and the third three-phase switch 3 respectively.

[0038] The first A-phase tap line 7 and the first B-phase tap line 8 are connected to the first three-phase switch 1 nearby, the first C-phase tap line 9 is led down to a height below the second three-phase switch 2 and passes through the lower part of the second three-phase switch 2, and then is led up to connect to the first three-phase switch 1, the second B-phase tap line 11 and the second C-phase tap line 12 are connected to the second three-phase switch 2 nearby, the second A-phase tap line 10 is led down to a height below the first three-phase switch 1 and passes through the lower part of the first three-phase switch 1, and then is led up to connect to the second three-phase switch 2, the third C-phase tap line 15 is connected to the third three-phase switch 3 nearby, the third A-phase tap line 13 and the third B-phase tap line 14 are wound around the outside of the coil 6 and connected to the third three-phase switch 3 from one side of the oil tank 4.

[0039] The three three-phase switches are arranged on the same side of the oil tank 4, and are placed parallel and staggered with the three-phase coils. The coil lead ends are arranged as much as possible toward the corresponding switches, so that most of the tap lines can be connected to the switches nearby. For a small number of tap lines that are far away from the corresponding switches, they are led from the bottom of the switch and the outside of the coil to the corresponding switch position while ensuring the insulation distance, thereby ensuring the insulation distance between the leads and facilitating wiring.

[0040] The above three-phase switches and switches are: first three-phase switch 1, second three-phase switch 2 and third three-phase switch 3; the three-phase coils are: coil 6; the leads are: first A phase tapping wire 7, first B phase tapping wire 8, first C phase tapping wire 9, second A phase tapping wire 10, second B phase tapping wire 11, second C phase tapping wire 12, third A phase tapping wire 13, third B phase tapping wire 14, third C phase tapping wire 15.

[0041] The first A-phase tapping wire 7, the second A-phase tapping wire 10 and the third A-phase tapping wire 13 are all connected to the A-phase;

[0042] The first B-phase tapping line 8, the second B-phase tapping line 11 and the third B-phase tapping line 14 are all connected to the B phase;

[0043] The first C-phase tapping line 9 , the third C-phase tapping line 15 and the second C-phase tapping line 12 are all connected to the C phase.

[0044] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention.

Claims

1. A three-switch wiring structure, comprising a tapping line (100), characterized in that: An isolator (101) is arranged on the tapping line (100), and the isolator (101) comprises a magnetic block (102), an inner insulating ring (103), an insulating filling block (104), and an outer insulating ring (105). The magnetic block (102) and the insulating filling block (104) are both provided in multiple groups, and the multiple groups of magnetic blocks (102) and the multiple groups of insulating filling blocks (104) are spaced and distributed, and adjacent magnetic blocks (102) and insulating filling blocks (104) are fixedly connected. The multiple groups of inner insulating rings (103) and the multiple groups of insulating filling blocks (104) form a sleeve ring structure, and the inner insulating ring (103) is fixedly arranged at the inner ring of the sleeve ring structure, and the outer insulating ring (105) is fixedly covered at the outer ring of the sleeve ring structure. The magnetic poles of the multiple groups of magnetic blocks (102) away from the inner insulating ring (103) are the same, and the inner insulating ring (103) is movably sleeved at the outer ring of the tapping line (100).

2. A three-switch wiring structure according to claim 1, characterized in that: The inner insulating ring (103) is in a compressed state and is pressed between the inner ring of the sleeve structure and the outer ring of the tapping wire (100).

3. A three-switch wiring structure according to claim 1, characterized in that: The angles between the multiple groups of magnetic blocks (102) are less than 20 degrees.

4. A three-switch wiring structure according to claim 1, characterized in that: The tapping line (100) is arranged in the oil tank (4), and comprises a first A-phase tapping line (7), a first B-phase tapping line (8), a first C-phase tapping line (9), a second A-phase tapping line (10), a second B-phase tapping line (11), a second C-phase tapping line (12), a third A-phase tapping line (13), a third B-phase tapping line (14), and a third C-phase tapping line (15).

5. A three-switch wiring structure according to claim 4, characterized in that: The oil tank (4) is provided with a first three-phase switch (1), a second three-phase switch (2), a third three-phase switch (3), an iron core (5) and a coil (6); the coil (6) is wound on the iron core (5); the first three-phase switch (1), the second three-phase switch (2) and the third three-phase switch (3) are arranged in sequence on the same side of the oil tank (4); the coil (6) is provided in three groups; the first three-phase switch (1), the second three-phase switch (2) and the third three-phase switch (3) and the three groups of coils (6) are arranged in parallel and staggered.

6. A three-switch wiring structure according to claim 5, characterized in that: The three groups of coils (6) are sequentially distributed into phase A, phase B and phase C, and phase A, phase B and phase C are respectively close to the first three-phase switch (1), the second three-phase switch (2) and the third three-phase switch (3).

7. A three-switch wiring structure according to claim 6, characterized in that: The first A-phase tapping line (7) and the first B-phase tapping line (8) are connected to the first three-phase switch (1) nearby; the first C-phase tapping line (9) is led down to a height below the second three-phase switch (2) and passes through the lower part of the second three-phase switch (2), and then is led upward to connect to the first three-phase switch (1); the second B-phase tapping line (11) and the second C-phase tapping line (12) are connected to the second three-phase switch (2) nearby; the second A-phase tapping line (10) is led down to a height below the first three-phase switch (1) and passes through the lower part of the first three-phase switch (1), and then is led upward to connect to the second three-phase switch (2); the third C-phase tapping line (15) is connected to the third three-phase switch (3) nearby; the third A-phase tapping line (13) and the third B-phase tapping line (14) are wound around the outside of the coil (6) and connected to the third three-phase switch (3) from one side of the oil tank (4).

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