Wire outlet structure and transformer

Abstract

The wire outlet structure comprises an oil tank, a first mounting plate, a first sealing piece and a connecting piece, the tank wall of the oil tank is made of an insulating material, a first mounting hole and a first connecting hole are formed in the tank wall of the oil tank, and the first mounting hole is a through hole; the first mounting plate is attached to the inner wall or the outer wall of the oil tank and is provided with a second mounting hole and a second connecting hole, and the second mounting hole is a through hole; the first sealing piece is pressed between the first mounting plate and the tank wall of the oil tank; the conducting bar penetrates through the first mounting hole and the second mounting hole, and two ends of the conducting bar are respectively arranged inside and outside the oil tank; the connecting piece is matched with the first connecting hole and the second connecting hole so as to press the first sealing piece; the oil tank of the wire outlet structure is made of insulating materials, stray loss cannot be generated, heating cannot be generated, and therefore the size of the oil tank can be effectively reduced; and meanwhile, sealing connection between the first mounting plate and the oil tank is achieved through the arrangement of the first sealing piece and the connecting piece.

Description

Technical Field

[0001] The present invention relates to the technical field of transformers, and more particularly to an outlet line structure and a transformer. Background Art

[0002] In recent years, the capacity of electric furnace transformers and rectifier transformers has been increasing, and the secondary output current has also been increasing. The oil tank wall of these products at the secondary outlet is usually made of non-magnetic steel plates in order to reduce stray losses and prevent overheating of the tank wall. However, as the current gradually increases, the performance of the non-magnetic steel plate will approach the theoretical limit. If this structure continues to be used, the volume of the oil tank will have to be increased, and the stray loss will also increase significantly, which not only reduces the cost performance of the transformer, but also increases the cost of using the transformer throughout its life cycle.

[0003] Therefore, how to reduce the cost of transformers has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0004] In view of this, an object of the present invention is to provide an outgoing line structure to reduce the cost of the transformer.

[0005] Another object of the present invention is to provide a transformer including the above-mentioned outgoing line structure.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A wire outlet structure comprises an oil tank, a first mounting plate, a conductive bar, a first sealing member and a connecting member;

[0008] The tank wall of the oil tank is made of insulating material, and a first mounting hole and a first connecting hole are opened on the tank wall of the oil tank, and the first mounting hole is a through hole;

[0009] The first mounting plate is fitted with the inner wall or the outer wall of the oil tank and is provided with a second mounting hole and a second connecting hole, the second mounting hole is a through hole and is connected with the first mounting hole, and the first sealing member is pressed between the first mounting plate and the tank wall of the oil tank;

[0010] The conductive bar is inserted through the first mounting hole and the second mounting hole, and two ends are respectively arranged inside the oil tank and outside the oil tank, and the conductive bar is made of conductive material;

[0011] When the first mounting plate is in contact with the inner wall of the oil tank, the first connecting hole is a through hole, the second connecting hole is a blind hole, and is arranged on the side where the first mounting plate is in contact with the inner wall of the oil tank, and the connecting piece passes through the first connecting hole and is threadedly engaged with the second connecting hole; when the first mounting plate is in contact with the outer wall of the oil tank, the first connecting hole is a blind hole and is opened on the outer wall of the oil tank, the second connecting hole is a through hole, and the connecting piece passes through the second connecting hole and is threadedly engaged with the first connecting hole.

[0012] Optionally, in the above-mentioned outlet structure, a first sealing ring groove is provided on the side of the first mounting plate in contact with the tank wall of the oil tank, and the first sealing member is arranged in the first sealing ring groove.

[0013] Optionally, in the above-mentioned wire outlet structure, the second connecting hole is arranged in the first sealing ring groove.

[0014] Optionally, in the above-mentioned outlet structure, the first mounting plate is in contact with the inner wall of the oil tank;

[0015] It also includes a second mounting plate and a second sealing member, wherein the second mounting plate is arranged outside the oil tank and fits against the outer wall of the oil tank, a third mounting hole and a third connecting hole are formed on the second mounting plate, the third mounting hole is connected with the first mounting hole, the conductive bar passes through the third mounting hole, the third connecting hole is connected with the first connecting hole, and the connecting member passes through the third connecting hole;

[0016] The second sealing member is compressed between the second mounting plate and the outer wall of the oil tank.

[0017] Optionally, in the above-mentioned outlet structure, a second sealing ring groove is provided on the side of the second mounting plate in contact with the outer wall of the oil tank, and the second sealing member is embedded in the second sealing ring groove.

[0018] Optionally, in the above-mentioned outlet structure, the connecting member includes a bolt and a gasket, the bolt is threadedly matched with the first connecting hole or the second connecting hole, and the gasket is pressed between the head of the bolt and the outer wall of the oil tank or the first mounting plate; or,

[0019] The connecting member includes a screw, a nut and a gasket. The first end of the screw is threadedly engaged with the first connecting hole or the second connecting hole. The nut is arranged outside the oil tank and threadedly engaged with the second end of the screw. The gasket is pressed between the nut and the outer wall of the oil tank or the first mounting plate.

[0020] Optionally, in the above-mentioned wire-out structure, the first mounting plate and the conductive bar are arranged vertically, and a reinforcing rib is connected between the first mounting plate and the conductive bar.

[0021] Optionally, in the above-mentioned outlet structure, the first mounting plate is connected to the conductive bar by welding;

[0022] The first mounting plate and the conductive bar are an integrated structure.

[0023] Optionally, in the above-mentioned wire outlet structure, the second connection holes are multiple and are symmetrically arranged on both sides of the second mounting hole.

[0024] A transformer comprises the above-mentioned outgoing line structure.

[0025] The outlet structure provided by the present invention comprises an oil tank, a first mounting plate, a first sealing member and a connecting member. The wall of the oil tank is made of insulating material, and a first mounting hole and a first connecting hole are provided on the wall of the oil tank, wherein the first mounting hole is a through hole; the first mounting plate is fitted with the inner wall or the outer wall of the oil tank, and a second mounting hole and a second connecting hole are provided, wherein the second mounting hole is a through hole penetrating the first mounting plate and communicating with the first mounting hole; the first sealing member is pressed between the first mounting plate and the wall of the oil tank; the conductive bar is passed through the first mounting hole and the second mounting hole, and the two ends are respectively arranged inside and outside the oil tank, and the conductive bar is made of conductive material to facilitate the two The first connection hole is a through hole, and the second connection hole is a blind hole, which is arranged on the side where the first mounting plate is in contact with the inner wall of the oil tank. The connecting piece passes through the first connection hole and is threadedly matched with the second connection hole to compress the first sealing piece. When the first mounting plate is in contact with the outer wall of the oil tank, the first connection hole is a blind hole and is opened on the outer wall of the oil tank. The second connection hole is a through hole. The connecting piece passes through the second connection hole and is threadedly matched with the first connection hole to compress the first sealing piece. The blind hole structure avoids direct contact between the connecting piece and the transformer oil inside the oil tank, thereby reducing the risk of leakage.

[0026] Compared with the prior art, the oil tank of the outlet structure provided by the present invention is made of insulating material, which will not generate stray losses or heat, so the volume of the oil tank can be effectively reduced; at the same time, the sealing connection effect between the first mounting plate and the oil tank is achieved by setting the first sealing member and the connecting member. Electric furnace transformers, rectifier transformers and other transformers can all use the outlet structure disclosed in the present invention for insulated outlets, and play a technical effect of reducing the volume of the oil tank, reducing stray losses, and avoiding heating of the tank wall, thereby improving the cost performance of the transformer and reducing the use cost of the transformer throughout its life cycle.

[0027] The transformer provided by the present invention includes the above-mentioned outgoing line structure, so it also has the above-mentioned structure and beneficial effects. Other structures refer to the prior art and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 A front view of a first outlet structure disclosed in an embodiment of the present invention;

[0030] Figure 2 for Figure 1 Sectional view at AA in the middle;

[0031] Figure 3 A side view of the first outlet structure disclosed in an embodiment of the present invention;

[0032] Figure 4 A top view of a first type of outlet structure disclosed in an embodiment of the present invention;

[0033] Figure 5 A top view of a second outlet structure disclosed in an embodiment of the present invention;

[0034] Figure 6 A top view of a third outlet structure disclosed in an embodiment of the present invention;

[0035] Figure 7 It is a schematic diagram of assembling the first mounting plate and the conductive bar disclosed in an embodiment of the present invention;

[0036] Figure 8 A front view of a first mounting plate disclosed in an embodiment of the present invention;

[0037] Fig. 9 It is a side view of a first mounting plate disclosed in an embodiment of the present invention.

[0038] Among them, 100 is an oil tank, 200 is a first mounting plate, 201 is a first sealing ring groove, 202 is a second mounting hole, 203 is a second connecting hole, 210 is a conductive bar, 220 is a second mounting plate, 221 is a second sealing ring groove, and 300 is a connecting piece. DETAILED DESCRIPTION

[0039] The core of the invention is to disclose an outgoing line structure to reduce the cost of the transformer.

[0040] Another core of the present invention is to disclose a transformer including the above-mentioned outgoing line structure.

[0041] The following embodiments are described with reference to the accompanying drawings. In addition, the embodiments shown below do not limit the invention contents described in the claims. In addition, the entire contents of the structures represented by the following embodiments are not limited to those necessary as solutions to the inventions described in the claims. It should be noted that, for ease of description, only the parts related to the inventions are shown in the accompanying drawings. The embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0042] Combination Figure 1-Figure 9 The outlet structure disclosed in the present invention includes an oil tank 100, a first mounting plate 200, a first sealing member (not shown in the figure) and a connecting member 300. The wall of the oil tank is made of insulating material, and a first mounting hole and a first connecting hole are opened on the wall of the oil tank, and the first mounting hole is a through hole; the first mounting plate is in contact with the inner wall or the outer wall of the oil tank, and is provided with a second mounting hole and a second connecting hole, and the second mounting hole is a through hole that penetrates the first mounting plate and is connected to the first mounting hole; the first sealing member is pressed between the first mounting plate and the wall of the oil tank; the conductive bar is passed through the first mounting hole and the second mounting hole, and the two ends are respectively arranged inside and outside the oil tank, and the conductive bar is made of conductive material, so as to It is convenient to weld the two together and conduct electricity through the conductive bar 210; when the first mounting plate is fitted against the inner wall of the oil tank, the first connecting hole is a through hole, and the second connecting hole is a blind hole, and is arranged on the side where the first mounting plate is fitted against the inner wall of the oil tank, and the connecting piece passes through the first connecting hole and is threadedly matched with the second connecting hole to compress the first sealing piece; when the first mounting plate is fitted against the outer wall of the oil tank, the first connecting hole is a blind hole and is opened on the outer wall of the oil tank, and the second connecting hole is a through hole, and the connecting piece passes through the second connecting hole and is threadedly matched with the first connecting hole to compress the first sealing piece, and the blind hole structure avoids direct contact between the connecting piece 300 and the transformer oil inside the oil tank 100, thereby reducing the risk of leakage.

[0043] Compared with the prior art, the oil tank 100 of the outlet structure disclosed in the present invention is made of insulating material, which does not generate stray loss and heat, so the volume of the oil tank 100 can be effectively reduced; at the same time, the sealing connection effect between the first mounting plate 200 and the oil tank 100 is achieved by setting the first sealing member and the connecting member 300. The outlet structure disclosed in the present invention can be used for insulated outlets in electric furnace transformers, rectifier transformers and other transformers, and it can reduce the volume of the oil tank 100, reduce stray loss, and avoid heating of the tank wall, thereby improving the cost performance of the transformer and reducing the use cost of the transformer throughout its life cycle.

[0044] For example, the fuel tank 100 may be made of composite materials such as glass fiber reinforced plastic, SMC (Sheet Molding Compound), DMC (Dough Molding Compound), RTM (Resin Transfer Molding), and carbon fiber reinforced plastic to ensure the insulation performance and corrosion resistance of the fuel tank 100. The material of the conductive bar 210 is copper, aluminum, etc., and the material of the first mounting plate 200 may be the same as or different from that of the conductive bar 210.

[0045] In order to facilitate the positioning and installation of the first seal, Figure 4 and Figure 5 A first sealing ring groove 201 is provided on the side of the first mounting plate 200 that is in contact with the wall of the oil tank 100. The first sealing member is arranged in the first sealing ring groove 201. The setting of the first sealing ring groove 201 can ensure the sealing effect of the first sealing member while realizing the positioning and installation of the first sealing member.

[0046] Further optimize the solution, combined with Figure 8 The second connection hole 203 is arranged on the inner circle of the first sealing ring groove 201, so that the transformer oil will not leak out through the first connection hole and the second connection hole 203, thereby achieving a strong sealing effect.

[0047] Combination Figure 6 In a specific embodiment of the present disclosure, the first mounting plate 200 is in contact with the inner wall of the oil tank 100; the outlet structure further includes a second mounting plate 220 and a second sealing member (not shown in the figure), the second mounting plate 220 is arranged outside the oil tank 100 and in contact with the outer wall of the oil tank 100, a third mounting hole and a third connecting hole are formed through the second mounting plate 220, the third mounting hole is connected with the first mounting hole, the conductive bar 210 is exposed through the third mounting hole, the third connecting hole is connected with the first connecting hole, the connecting member 300 passes through the third connecting hole to press the second sealing member between the second mounting plate 220 and the outer wall of the oil tank 100, the arrangement of the first sealing member and the second sealing member realizes double sealing, and further improves the sealing effect of the outlet structure.

[0048] In order to facilitate the positioning and installation of the second seal, Figure 6 A second sealing ring groove 221 is provided on the side of the second mounting plate 220 that is in contact with the outer wall of the oil tank 100, and the second sealing member is embedded in the second sealing ring groove 221. The second sealing ring groove 221 can ensure the sealing effect of the second sealing member while realizing the positioning and installation of the second sealing member.

[0049] The connecting member 300 may include a bolt and a gasket, wherein the bolt is threadedly engaged with the first connecting hole or the second connecting hole 203, and the gasket is pressed between the head of the bolt and the outer wall of the oil tank 100 or the first mounting plate 200; or, the connecting member 300 may include a screw, a nut and a gasket, wherein the first end of the screw is threadedly engaged with the first connecting hole or the second connecting hole 203, the nut is arranged outside the oil tank 100 and threadedly engaged with the second end of the screw, and the gasket is pressed between the nut and the outer wall of the oil tank 100 or the first mounting plate 200. Specifically, taking the first mounting plate 200 being arranged in the oil tank 100 as an example, when the connecting member 300 includes a bolt and a gasket, the bolt passes through the first connecting hole and is threadedly engaged with the second connecting hole 203, and the gasket is pressed between the head of the bolt and the outer wall of the oil tank 100; when the connecting member 300 includes a screw rod, a nut and a gasket, the first end of the screw rod passes through the first connecting hole and is threadedly engaged with the second connecting hole 203, the nut is arranged outside the oil tank 100 and is threadedly engaged with the second end of the screw rod, and the gasket is pressed between the outer wall of the oil tank 100 and the nut.

[0050] In order to improve the structural strength, the Figure 7 The first mounting plate 200 and the conductive bar 210 are arranged vertically, and a reinforcing rib is connected between the first mounting plate 200 and the conductive bar 210 .

[0051] The first mounting plate 200 and the conductive bar 210 may be an integrated structure, or the first mounting plate 200 and the conductive bar 210 may be connected by welding.

[0052] The shapes of the first mounting plate 200 and the conductive bar 210 are not limited to square, circular, etc. For example, Figure 7 FIG. 2 shows a structure in which a first mounting plate 200 and a conductive bar 210 are welded into a cross shape.

[0053] The transformer disclosed in the present invention includes the above-mentioned outgoing line structure, so it also has the above-mentioned structure and beneficial effects. Other structures refer to the prior art and will not be described in detail here.

[0054] The above description of the disclosed embodiments enables professionals and technicians in the field to implement or use the present invention. Various modifications to these embodiments will be apparent to professionals and technicians in the field, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. The specific technical means in some embodiments can be combined in part or in whole into another embodiment without being explicitly excluded by another embodiment. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features disclosed herein.

Claims

1. A wire outlet structure, characterized in that: It comprises an oil tank (100), a first mounting plate (200), a conductive bar (210), a first sealing member and a connecting member (300); The box wall of the oil tank (100) is made of insulating material, and a first mounting hole and a first connecting hole are provided on the box wall of the oil tank (100), wherein the first mounting hole is a through hole; The first mounting plate (200) is fitted with an inner wall or an outer wall of the oil tank (100), and is provided with a second mounting hole (202) and a second connecting hole (203); the second mounting hole (202) is a through hole and is connected to the first mounting hole; the first sealing member is pressed between the first mounting plate (200) and the wall of the oil tank (100); The conductive bar (210) is inserted through the first mounting hole and the second mounting hole (202), and two ends are respectively arranged inside the oil tank (100) and outside the oil tank (100), and the conductive bar (210) is made of conductive material; When the first mounting plate (200) is in contact with the inner wall of the oil tank (100), the first connecting hole is a through hole, the second connecting hole (203) is a blind hole and is arranged on the side where the first mounting plate (200) is in contact with the inner wall of the oil tank (100), and the connecting piece (300) passes through the first connecting hole and is threadedly engaged with the second connecting hole (203); when the first mounting plate (200) is in contact with the outer wall of the oil tank (100), the first connecting hole is a blind hole and is opened on the outer wall of the oil tank (100), the second connecting hole (203) is a through hole, and the connecting piece (300) passes through the second connecting hole (203) and is threadedly engaged with the first connecting hole.

2. The outlet structure according to claim 1, characterized in that: A first sealing ring groove (201) is provided on the side surface of the first mounting plate (200) that contacts the tank wall of the oil tank (100), and the first sealing component is arranged in the first sealing ring groove (201).

3. The outlet structure according to claim 2, characterized in that: The second connecting hole (203) is arranged in the first sealing ring groove (201).

4. The outlet structure according to claim 1, characterized in that: The first mounting plate (200) is in contact with the inner wall of the oil tank (100); It also includes a second mounting plate (220) and a second sealing member, the second mounting plate (220) being arranged outside the oil tank (100) and being in contact with the outer wall of the oil tank (100), the second mounting plate (220) being provided with a third mounting hole and a third connecting hole, the third mounting hole being connected to the first mounting hole, the conductive bar (210) passing through the third mounting hole, the third connecting hole being connected to the first connecting hole, and the connecting member (300) passing through the third connecting hole; The second sealing member is compressed between the second mounting plate (220) and the outer wall of the oil tank (100).

5. The outlet structure according to claim 4, characterized in that: A second sealing ring groove (221) is provided on the side surface of the second mounting plate (220) that contacts the outer wall of the oil tank (100), and the second sealing member is embedded in the second sealing ring groove (221).

6. The outlet structure according to claim 1, characterized in that: The connecting member (300) comprises a bolt and a gasket, the bolt being threadably matched with the first connecting hole or the second connecting hole (203), and the gasket being pressed between the head of the bolt and the outer wall of the oil tank (100) or the first mounting plate (200); or, The connecting member (300) comprises a screw rod, a nut and a gasket, wherein the first end of the screw rod is threadedly engaged with the first connecting hole or the second connecting hole (203), the nut is arranged outside the oil tank (100) and is threadedly engaged with the second end of the screw rod, and the gasket is pressed between the nut and the outer wall of the oil tank (100) or the first mounting plate (200).

7. The outlet structure according to claim 1, characterized in that: The first mounting plate (200) and the conductive bar (210) are arranged vertically, and a reinforcing rib is connected between the first mounting plate (200) and the conductive bar (210).

8. The outlet structure according to claim 1, characterized in that: The first mounting plate (200) is connected to the conductive bar (210) by welding; The first mounting plate (200) and the conductive bar (210) are an integrated structure.

9. The outlet structure according to claim 1, characterized in that: The second connection holes (203) are a plurality of holes symmetrically arranged on both sides of the second mounting hole (202).

10. A transformer, characterized in that: It comprises the outlet wire structure as described in any one of claims 1 to 9.

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