Sectional type hub and hanging bracket for current limiting reactor

Abstract

The utility model discloses a sectional type hub and a hanging bracket for a current limiting reactor, and relates to the technical field of dry type air-core reactor installation equipment. Wherein the sectional type hub comprises a central hub and a suspension arm, the central hub comprises a plurality of sections of split rings, the plurality of sections of split rings are coaxially arranged, and a gap is reserved between every two adjacent split rings; the suspension arms are arranged on the two sides of the split rings, the two suspension arms are located on the same plane, and the plane passes through the axes of the split rings. The hanging bracket comprises a plurality of hanging arms and a sectional hub for the current limiting reactor; the plurality of lifting arms are distributed on the outer circumferential surface of the central hub; and the plurality of suspension arms are combined with the suspension arms in the central roller hub to form an annular array. The utility model provides a sectional hub and a hanging bracket for a current-limiting reactor, which can reduce the eddy current loss of a central hub of the current-limiting reactor and further reduce the temperature rise at the central hub.

Description

Technical Field

[0001] The utility model relates to the technical field of dry-type air-core reactor installation equipment, and in particular to a segmented hub and a hanger for a current-limiting reactor. Background Art

[0002] The dry-type reactor hanger is an important component of the reactor. It adopts a star-shaped structure and consists of a hub and a boom. The current-limiting reactor is connected in series in the power grid to limit the short-circuit current in the power grid and needs to be current-conducted for a long time. For the 500kV power grid system, the current-limiting reactor with a capacity of more than 100Mvar has a large capacity. The center hub will produce extremely strong eddy current losses under the action of high-intensity electromagnetic fields. The hub will produce a strong thermal effect under the action of eddy current losses. The traditional hub has large losses and produces large thermal effects, which cannot meet the temperature rise requirements of large-capacity current-limiting reactors. Utility Model Content

[0003] In order to solve the deficiencies in the prior art, the utility model provides a segmented hub and hanger for a current limiting reactor, which can reduce the eddy current loss of the central hub of the current limiting reactor and thus reduce the temperature rise at the central hub.

[0004] The utility model adopts the following technical solutions.

[0005] In the first aspect, the utility model provides a segmented hub for a current limiting inductor, comprising: a central hub and a suspension arm, wherein the central hub comprises a plurality of open ring segments, the plurality of open ring segments are coaxially arranged, and a gap is left between two adjacent open rings; the suspension arm is arranged on both sides of the plurality of open ring segments, the two suspension arms are located in the same plane, and the plane passes through the axis of the open ring.

[0006] Preferably, the number of segments of the open ring is 3, 4, 6 or 8.

[0007] Preferably, the plurality of sections of the open ring are equally or unequally divided along the width direction of the central hub.

[0008] Preferably, the width of the boom is 254 mm, 306 mm or 408 mm, and the thickness is 10 mm.

[0009] Preferably, the outer diameter of the central hub is 160 mm, and the thickness thereof is 10 mm or 8 mm.

[0010] In the second aspect, the utility model provides a hanger for a current limiting inductor, comprising: a plurality of hanging arms, the hanger also comprising: a segmented hub for a current limiting inductor as described in any one of the items; a plurality of the hanging arms distributed on the outer circumferential surface of the central hub; a plurality of hanging arms combined with the hanging arms in the central hub to form a circular array.

[0011] Preferably, the upper and lower end surfaces of the central hub are flush with the upper and lower end surfaces of the boom.

[0012] Preferably, the hanger further comprises: a tie rod; the tie rod is arranged between every two adjacent suspension arms and is used to bind the two adjacent suspension arms.

[0013] Preferably, the hanger further comprises: a binding belt; the binding belt is arranged between every two adjacent booms to reinforce the connection of the booms; and the multiple binding belts are located between the multiple tie bars and the central hub.

[0014] Preferably, the boom and the central hub are fixed by welding.

[0015] The beneficial effect of the utility model is that, compared with the prior art, the utility model provides a central hub structure including multiple sections of open rings, so that the central hub can meet the flow demand without forming a circulation; by changing the number of sections of the open rings and the height of each section of the open rings, the eddy current loss can be reduced, thereby reducing the temperature rise. The segmented hub and hanger provided by the utility model can be suitable for applications such as current limiting reactors with large capacity, high central magnetic field strength, low temperature rise requirements for metal structural parts, and large coil size and weight, and can play a good role in reducing the loss of the boom, ensuring the stable operation of the air-core reactor under high electromagnetic fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view of the central hub provided by the utility model.

[0017] Figure 2 It is a three-dimensional view of the central hub provided by the utility model.

[0018] Figure 3 It is a structural schematic diagram of the hanger provided by the utility model.

[0019] Figure 4 It is an assembly diagram of the hanger and the reactor body provided by the utility model.

[0020] In the figure:

[0021] 1. Boom, 2. Center hub, 3. Reactor body, 4. Tie rod, 5. Binding belt. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The embodiments described in this application are only part of the embodiments of the utility model, not all of them. Based on the spirit of the utility model, other embodiments obtained by ordinary technicians in this field without creative work are all within the scope of protection of the utility model.

[0023] like Figure 1 , Figure 2 As shown, embodiment 1 of the utility model provides a segmented hub for a current limiting reactor, including a central hub 2 and two suspension arms 1, wherein the central hub 2 includes a plurality of open rings, the plurality of open rings are coaxially arranged, and a gap is left between two adjacent open rings. The two suspension arms 1 are located in the same plane, and the plane passes through the axis of the open rings, and the two suspension arms are distributed on both sides of the plurality of open rings. The upper and lower end surfaces of the central hub 2 are flush with the upper and lower end surfaces of the suspension arms 1.

[0024] In a preferred but non-limiting embodiment of the present invention, the number of segments of the open ring can be selected according to the width of the boom, and can generally be a 3-, 4-, 6- or 8-segment structure, and the multi-segment open ring can be equally or unequally divided along the width direction of the central hub.

[0025] In a preferred but non-limiting embodiment of the present invention, the open ring and the suspension arm are made of aluminum alloy.

[0026] In a preferred but non-limiting embodiment of the present invention, the boom 1 is a plate-like structure with a width of 254 mm, 306 mm or 408 mm, a thickness of 10 mm, and a length determined by the outer diameter of the reactor and adapted to the reactor.

[0027] Furthermore, the outer diameter of the central hub 2 is 160 mm, and the thickness thereof is 10 mm or 8 mm.

[0028] The utility model adopts a multi-section hub structure, which is provided with an opening so that the central roller hub will not form a circulation, and each section of the open ring is in contact with the booms on both sides, which can ensure the flow of the booms and meet the flow density of the booms. At the same time, the design of the open ring can reduce the volume of the central hub and reduce the loss of the central hub. In addition, the number of sections of the central hub and the height of each open ring can be flexibly adjusted. At a location with large eddy current loss, such as a location close to the coil, by reducing the height of the open ring or the number of sections of the open ring, the eddy current loss can be reduced, thereby reducing the temperature rise.

[0029] like Figure 3 , Figure 4As shown, embodiment 2 of the utility model provides a hanger, including a segmented hub for a current limiting reactor and a plurality of arms 1. The plurality of arms 1 are evenly spaced and distributed on the outer circumference of the central hub 2. The plurality of arms 1 are arranged in the same manner as the arms 1 in the segmented hub. The plurality of arms 1 are combined with two arms 1 in the segmented hub to form an annular array, so that the hanger has a star-shaped hanger structure, and each arm 1 is welded to the central hub 2.

[0030] Combination Figure 4 As shown, the hanger is installed at the upper and lower ends of the reactor body 3 to support and protect the dry-type reactor.

[0031] The structure and size of each boom 1 are the same, and the upper and lower end surfaces of each boom 1 are flush with the upper and lower end surfaces of the central hub 2 .

[0032] Combination Figure 3 As shown, in a preferred but non-restrictive embodiment of the utility model, two adjacent booms 1 are fixed with tie bars 4 and multiple horizontally arranged binding straps 5, and the multiple binding straps 5 are located between the multiple tie bars 4 and the central hub 2. Through the dual effects of the binding straps 5 and the tie bars 4, the hanger structure is made more stable and prevented from deformation.

[0033] Furthermore, the material of the binding belt 5 is epoxy resin, and the material of the tie rod 4 is epoxy resin and aluminum alloy. The reactor body 3 is preferably a dry-type air-core reactor, which is a cylindrical structure with a central hole.

[0034] The beneficial effect of the utility model is that, compared with the prior art, the utility model provides a central hub structure including multiple sections of open rings, so that the central hub can meet the flow requirements without forming a circulation; by changing the number of sections of the open rings and the height of each section of the open rings, the eddy current loss can be reduced, thereby reducing the temperature rise. The segmented hub and hanger provided by the utility model can be suitable for applications such as current limiting reactors with large capacity, high central magnetic field strength, low temperature rise requirements for metal structural parts, and large coil size and weight, and can play a good role in reducing the loss of the boom, ensuring the stable operation of the air-core reactor under high electromagnetic fields.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or replaced by equivalents, and any modifications or equivalent replacements that do not depart from the spirit and scope of the utility model should be included in the scope of protection of the claims of the utility model.

Claims

1. A segmented hub for a current limiting reactor, comprising: The central hub (2) and the boom (1) are characterized by: The central hub (2) comprises a plurality of open rings, which are coaxially arranged, and a gap is left between two adjacent open rings; The suspension arms (1) are arranged on both sides of a plurality of sections of the open rings, and the two suspension arms (1) are located in the same plane, and the plane passes through the axis of the open rings.

2. The segmented hub for a current limiting reactor according to claim 1, characterized in that: The number of segments of the open ring is 3, 4, 6 or 8.

3. The segmented hub for current limiting reactor according to claim 1, characterized in that: The multiple sections of the open ring are equally or unequally divided along the width direction of the central hub (2).

4. The segmented hub for a current limiting reactor according to any one of claims 1 to 3, characterized in that: The width of the boom (1) is 254 mm, 306 mm or 408 mm, and its thickness is 10 mm.

5. The segmented hub for a current limiting reactor according to any one of claims 1 to 3, characterized in that: The outer diameter of the central hub (2) is 160 mm, and its thickness is 10 mm or 8 mm.

6. A hanger for a current limiting reactor, comprising: A plurality of booms (1), characterized in that: The hanger further comprises: a segmented hub for a current-limiting reactor as claimed in any one of claims 1 to 5; The plurality of suspension arms (1) are distributed on the outer circumferential surface of the central hub (2); the plurality of suspension arms (1) are combined with the suspension arms (1) in the central hub (2) to form a ring array.

7. The hanger according to claim 6, characterized in that: The upper and lower end surfaces of the central hub (2) are flush with the upper and lower end surfaces of the boom (1).

8. The hanger according to claim 6, characterized in that: The hanger also includes: a tension rod (4); The tie rod (4) is arranged between every two adjacent suspension arms (1) and is used to bind the two adjacent suspension arms (1).

9. The hanger according to claim 8, characterized in that: The hanger also includes: a binding belt (5); The binding belt (5) is arranged between every two adjacent booms (1) and is used to reinforce the connection of the booms (1); the multiple binding belts (5) are located between the multiple tie bars (4) and the central hub (2).

10. The hanger according to claim 6, characterized in that: The boom (1) and the central hub (2) are fixed by welding.

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