Wire outlet device for transformer body

Abstract

The invention relates to the field of transformer devices, in particular to an outgoing line device for a transformer body, which comprises coil outgoing lines and a convergence line, the lower ends of the two coil outgoing lines are connected with the upper end of the convergence line, the lower end of the convergence line is fixedly connected with a crimping joint, and the two coil outgoing lines and the convergence line are combined to form a Y shape; the gap supporting mechanism is arranged on the surfaces of the two coil outgoing lines in a sleeving mode, and the surface of the gap supporting mechanism extends to the exterior of the convergence line; according to the wire outlet device for the transformer body, under the action of the gap supporting mechanism, the wire outlet device for the transformer body can effectively utilize the direct space between coils, so that the insulating property of the wire outlet position is improved, the electric field distribution is improved, the effect of fixing a winding outlet wire is achieved, the risks of partial discharge and breakdown are reduced, and the service life of the transformer body is prolonged. The lead is not easy to loosen during connection, and stable operation of the transformer is guaranteed.

Description

Technical Field

[0001] The invention relates to the field of transformer devices, and in particular to an outlet wire device for a transformer body. Background Art

[0002] The lead-out device used in the transformer body is an important part of the transformer. Its main function is to lead the coil lead end out of the oil tank and ensure that the lead and the oil tank are in good insulation. In order to ensure the normal operation of the lead-out device and extend its service life, it needs to be regularly maintained and inspected. This mainly includes checking whether the appearance of the insulating sleeve is intact, whether there are cracks or discharge phenomena; checking whether the connection between the lead and the sleeve is firm and reliable; and regularly cleaning the dust and debris on the surface of the lead-out device.

[0003] Due to the high voltage level at the head end of the transformer, the traditional head end outgoing wires are only connected with fasteners, which cannot ensure the insulation distance, making it easy for local discharge or even breakdown to occur; and the bent wires make the electric field distribution uneven, and the wires are easy to loosen when connected, which cannot meet the stable operation of the transformer.

[0004] Therefore, a transformer body lead-out device is proposed to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a lead-out device for a transformer body in order to solve the above-mentioned problem, which improves the problem that the bent wires make the electric field distribution uneven, the wires are easy to loosen when connected, and cannot meet the problem of stable operation of the transformer.

[0006] The present invention achieves the above-mentioned purpose through the following technical solutions: a lead-out device for a transformer body, comprising: a coil lead-out and a junction line, wherein the lower ends of the two coil lead-outs are connected to the upper end of the junction line, the lower end of the junction line is fixedly connected with a crimping joint, and the two coil lead-outs and the junction line are combined to form a Y shape; a gap support mechanism, wherein the gap support mechanism is sleeved on the surfaces of the two coil lead-outs, and the surface of the gap support mechanism extends to the outside of the junction line; wherein the gap support mechanism comprises a first Y-shaped angle ring sleeved on the outside of the junction line, the surface of the first Y-shaped angle ring extends to the outside of the coil lead-out, and two outer support components are arranged inside the first Y-shaped angle ring, the two outer support components are sleeved on the outside of the coil lead-out, and an inner support component is arranged inside the outer support component.

[0007] Preferably, the outer support assembly includes two groups of multiple outer support bars respectively sleeved on the outside of the two coil outlets, and the surfaces of the multiple outer support bars close to the first Y-shaped angle ring are fixedly connected with support inclined plates, and the support inclined plates are fixedly connected to the inner wall of the first Y-shaped angle ring. The multiple outer support bars are spirally matched with the support arc rod to form a good support effect.

[0008] Preferably, the inner support assembly includes a second Y-shaped angle ring sleeved on the surfaces of the two coil outlets, the surface of the second Y-shaped angle ring extends to the outside of the confluence line, the second Y-shaped angle ring contacts the surface of the outer support bar, and a plurality of inner support bars are arranged on the inner side of the second Y-shaped angle ring. The second Y-shaped angle ring is wrapped with an insulating tube.

[0009] Preferably, the plurality of outer support bars are evenly distributed in a ring shape along the surface of the coil outlet, and the outer support bars are arranged in a spiral ring shape.

[0010] Preferably, a plurality of supporting arc rods are fixedly connected to one side of the outer supporting strip, and the other end of the supporting arc rods is fixedly connected to the surface of an adjacent outer supporting strip.

[0011] Preferably, a connecting ring is fixedly connected to the end of the inner support bar, and the inner support bar is in contact with the surface of the coil outlet.

[0012] Preferably, the plurality of inner support bars are evenly distributed in a ring shape along the surface of the coil outlet, and the inner support bars are wavy.

[0013] The beneficial effects of the present invention are:

[0014] 1. The above-mentioned transformer body lead-out device can effectively utilize the space between coils under the action of the gap support mechanism, thereby improving the insulation performance at the lead-out point, improving the electric field distribution, and fixing the winding lead-out, reducing the risk of partial discharge and breakdown. The wires are not easy to loosen when connected, thereby ensuring the stable operation of the transformer.

[0015] 2. By setting up an outer support assembly and an inner support assembly, under the action of the inner support bar and the outer support bar, a plurality of outer support bars can be spirally matched with the supporting arc rod to form a good supporting effect for the second Y-shaped angle ring, thereby ensuring that there is a stable gap between the second Y-shaped angle ring and the surface of the coil outlet, thereby ensuring the stable operation of the transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of a lead-out device for a transformer body;

[0017] Figure 2 It is a cross-sectional view of the structure of a lead-out device for a transformer body;

[0018] Figure 3 It is a connection schematic diagram of the present invention;

[0019] Figure 4 It is a connection diagram of the present invention.

[0020] In the figure: 1, coil outlet; 2, converging line; 21, crimping joint; 3, gap support mechanism; 31, first Y-shaped angle ring; 32, outer support assembly; 321, outer support bar; 322, support arc rod; 323, support inclined plate; 33, inner support assembly; 331, second Y-shaped angle ring; 332, inner support bar; 333, connecting ring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] When implementing: Figure 1-4 As shown, a lead-out device for a transformer body comprises: a coil lead-out 1 and a junction line 2, wherein the lower ends of the two coil lead-outs 1 are connected to the upper ends of the junction line 2, the lower ends of the junction line 2 are fixedly connected with a crimping joint 21, and the two coil lead-outs 1 and the junction line 2 are combined to form a Y shape; a gap support mechanism 3, wherein the gap support mechanism 3 is sleeved on the surfaces of the two coil lead-outs 1, and the surface of the gap support mechanism 3 extends to the outside of the junction line 2; wherein the gap support mechanism 3 comprises a first Y-shaped angle ring 31 sleeved on the outside of the junction line 2, the surface of the first Y-shaped angle ring 31 extends to the outside of the coil lead-out 1, and two outer support components 32 are arranged inside the first Y-shaped angle ring 31, the two outer support components 32 are sleeved on the outside of the coil lead-out 1, and an inner support component 33 is arranged inside the outer support component 32;

[0023] like Figure 1-Figure 4 As shown, the outer support assembly 32 includes two groups of multiple outer support bars 321 respectively sleeved on the outside of the two coil outlets 1, and the multiple outer support bars 321 are fixedly connected with support inclined plates 323 on the surface close to the first Y-shaped angle ring 31, and the support inclined plates 323 are fixedly connected to the inner wall of the first Y-shaped angle ring 31; the inner support assembly 33 includes a second Y-shaped angle ring 331 sleeved on the surface of the two coil outlets 1, and the surface of the second Y-shaped angle ring 331 extends to the outside of the confluence line 2, the second Y-shaped angle ring 331 contacts the surface of the outer support bar 321, and the inner side of the second Y-shaped angle ring 331 is provided with multiple inner support bars 332;

[0024] The device separates the oil gap and plays a supporting role by setting the first Y-shaped angle ring 31 and the second Y-shaped angle ring 331 in cooperation with the outer support bar 321 and the inner support bar 332, thereby preventing the winding outlet from being displaced during operation; the Y-shaped angle ring not only improves the insulation performance, but also improves the electric field distribution, making the electric field distribution more uniform, reducing local electric field concentration, and reducing the risk of local discharge and insulation breakdown; the insulating tube increases the insulation distance and plays a certain supporting role;

[0025] like Figure 1 , Figure 2 and Figure 4 As shown, multiple outer support bars 321 are evenly distributed in a ring shape along the surface of the coil outlet 1, and the outer support bars 321 are arranged in a spiral ring shape; one side of the outer support bar 321 is fixedly connected to multiple support arc rods 322, and the other end of the support arc rod 322 is fixedly connected to the surface of the adjacent outer support bar 321; the end of the inner support bar 332 is fixedly connected to a connecting ring 333, and the inner support bar 332 is in contact with the surface of the coil outlet 1; multiple inner support bars 332 are evenly distributed in a ring shape along the surface of the coil outlet 1, and the inner support bars 332 are wavy;

[0026] The device forms a good supporting effect for the second Y-shaped angle ring 331 by spirally combining multiple outer support bars 321 with the supporting arc rod 322, and under the action of the inner support bar 332, a good gap is formed between the second Y-shaped angle ring 331 and the coil outlet 1, ensuring that there is a stable gap between the second Y-shaped angle ring 331 and the surface of the coil outlet 1, reducing local electric field concentration, and reducing the risk of local discharge and insulation breakdown; the insulating tube increases the insulation distance and plays a certain supporting role.

[0027] When the present invention is used, the two coil outlets 1 are connected together by a crimping joint 21; the inner support strips 332 are fixed in the circumferential direction at the outlets of the two coil outlets 1, and the second Y-shaped angle ring 331 is installed outside the inner support strip 332, and the upper and lower parts of the second Y-shaped angle ring 331 are firmly bonded; the second Y-shaped angle ring 331 is wrapped with an insulating tube, and then the outer support strip 321 is fixed in the circumferential direction; the first Y-shaped angle ring 31 is installed outside the outer support strip 321, and the first Y-shaped angle ring 31 is fixed on the outer support strip 321. The lower two parts are firmly bonded. The device cooperates with the outer support bar 321 and the inner support bar 332 by setting the first Y-shaped angle ring 31 and the second Y-shaped angle ring 331. The multiple outer support bars 321 are spirally matched with the supporting arc rod 322 to form a good supporting effect for the second Y-shaped angle ring 331. Under the action of the inner support bar 332, a good gap will be formed between the second Y-shaped angle ring 331 and the coil output line 1, ensuring that there is a stable gap between the second Y-shaped angle ring 331 and the surface of the coil output line 1.

[0028] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A lead-out device for a transformer body, characterized in that: include: Coil output wires (1) and a merging wire (2), the lower ends of the two coil output wires (1) are connected to the upper end of the merging wire (2), the lower end of the merging wire (2) is fixedly connected with a crimping joint (21), and the two coil output wires (1) and the merging wire (2) are combined to form a Y shape; A gap support mechanism (3), wherein the gap support mechanism (3) is sleeved on the surfaces of the two coil outlets (1), and the surface of the gap support mechanism (3) extends to the outside of the merging line (2); The gap support mechanism (3) comprises a first Y-shaped angle ring (31) sleeved on the outside of the junction line (2), the surface of the first Y-shaped angle ring (31) extends to the outside of the coil output line (1), two outer support components (32) are arranged inside the first Y-shaped angle ring (31), the two outer support components (32) are sleeved on the outside of the coil output line (1), and the inner support component (33) is arranged inside the outer support component (32).

2. A transformer body outlet device according to claim 1, characterized in that: The outer support assembly (32) comprises two groups of multiple outer support bars (321) respectively sleeved on the outside of the two coil output wires (1), and the multiple outer support bars (321) are fixedly connected to the surface of the first Y-shaped angle ring (31) with a support inclined plate (323), and the support inclined plate (323) is fixedly connected to the inner wall of the first Y-shaped angle ring (31).

3. A transformer body outlet device according to claim 2, characterized in that: The inner support component (33) comprises a second Y-shaped angle ring (331) sleeved on the surfaces of the two coil outlets (1), the surface of the second Y-shaped angle ring (331) extending to the outside of the confluence line (2), the second Y-shaped angle ring (331) in contact with the surface of the outer support strip (321), and a plurality of inner support strips (332) are arranged on the inner side of the second Y-shaped angle ring (331).

4. A transformer body outlet device according to claim 2, characterized in that: The plurality of outer support bars (321) are evenly distributed in a ring shape along the surface of the coil outlet wire (1), and the outer support bars (321) are arranged in a spiral ring shape.

5. A transformer body outlet device according to claim 4, characterized in that: A plurality of supporting arc rods (322) are fixedly connected to one side of the outer supporting bar (321), and the other end of the supporting arc rod (322) is fixedly connected to the surface of an adjacent outer supporting bar (321).

6. A transformer body outlet device according to claim 3, characterized in that: A connecting ring (333) is fixedly connected to the end of the inner support bar (332), and the inner support bar (332) is in contact with the surface of the coil outlet wire (1).

7. A transformer body lead-out device according to claim 6, characterized in that: The plurality of inner support bars (332) are evenly distributed in a ring shape along the surface of the coil outlet wire (1), and the inner support bars (332) are wavy.

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