Transformer conducting rod mounting structure and mounting method

Abstract

The transformer conducting rod mounting structure comprises an oil tank, a conducting rod and a sealing piece, the conducting rod comprises a conducting rod body and a connecting part, the connecting part is connected with the conducting rod body, the connecting part is used for being connected with the oil tank, the oil tank comprises an insulating tank wall, and the insulating tank wall is connected with the connecting part and detachably connected with the oil tank; the sealing piece is arranged between the conducting rod and the oil tank. According to the transformer conducting rod mounting structure, the arrangement of the connecting part and the insulating box wall facilitates the connection of the conducting rod and the oil tank, a hand hole does not need to be formed in the oil tank, the mounting convenience of the conducting rod is improved, and the assembling process can be simplified; as the hand hole is omitted, the material cost of the transformer can be reduced, the condition of poor sealing performance caused by the hand hole is improved, and the risk of oil leakage of the oil tank is reduced; the oil tank adopts the insulating tank wall to replace the previous non-magnetic steel tank wall, and the insulating tank wall does not generate stray loss and does not generate heat, so that the volume of the oil tank can be reduced.

Description

Technical Field

[0001] This application relates to the field of transformer technology, and more specifically, to a transformer conductive rod mounting structure and mounting method. Background Technology

[0002] Currently, the output current of special transformers such as electric furnace transformers and rectifier transformers is increasing. The conductive rods of these transformers are often quite large. When installing the conductive rods, they are usually first fixed to the tank. After the product is enclosed in the tank, the conductive rods are connected to the lead copper busbars through a manhole on the tank wall. Because the manhole occupies a large space in the tank wall, it increases the material cost of the transformer, is inconvenient to operate, and poses a risk of fasteners and other metal foreign objects falling into the tank during the prying and connecting of bolts. Furthermore, the manhole itself can lead to poor sealing and oil leakage from the tank.

[0003] Therefore, how to improve the cumbersome assembly of conductive rods while reducing the risk of oil leakage from the oil tank has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] In view of this, the purpose of this application is to disclose a transformer conductive rod installation structure to improve the cumbersome assembly of the conductive rod and reduce the risk of oil leakage from the oil tank.

[0005] Another key aspect of this application is the disclosure of an installation method for the aforementioned transformer conductive rod mounting structure.

[0006] To achieve the above objectives, this application provides the following technical solution:

[0007] A transformer conductive rod mounting structure, comprising:

[0008] tank;

[0009] A conductive rod, comprising a conductive rod body and a connecting part, wherein the connecting part is connected to the conductive rod body and is used to connect to the oil tank, the oil tank comprising an insulating box wall, the insulating box wall being connected to the connecting part and being detachably connected to the oil tank;

[0010] A sealing element is disposed between the conductive rod and the oil tank.

[0011] Optionally, in the above-mentioned transformer conductive rod installation structure, the conductive rod is connected to the oil tank by fasteners, the insulating box wall is provided with a first mounting hole, the connecting part is provided with a second mounting hole, and the fastener passes through the first mounting hole and is threaded into the second mounting hole.

[0012] Optionally, in the above-described transformer conductive rod mounting structure, the connecting portion is configured as a plate-like structure extending outward from the conductive rod body.

[0013] Optionally, in the above-described transformer conductive rod mounting structure, the connecting portion is configured to be located on any side of the conductive rod body in a radial direction perpendicular to the axis of the conductive rod body; or, the connecting portion is configured to be arranged around the axis of the conductive rod body.

[0014] Optionally, in the above-described transformer conductive rod mounting structure, the connecting part is detachably connected to the conductive rod body or is not detachably connected.

[0015] Optionally, in the above-mentioned transformer conductive rod mounting structure, the connecting part is provided with a sealing groove for installing the sealing element; and / or, the insulating box wall is provided with a sealing groove for installing the sealing element.

[0016] Optionally, in the above-mentioned transformer conductive rod mounting structure, a sealing structure is provided between the clamping part of the fastener and the insulating box wall.

[0017] Optionally, in the above-described transformer conductive rod mounting structure, the sealing element includes a sealing ring or a sealing airbag.

[0018] A method for installing a transformer conductive rod, used in the aforementioned transformer conductive rod installation structure, includes the following steps:

[0019] The transformer body is placed in the oil tank. The transformer body includes an iron core and a coil wound around the iron core. The conductive rod body is connected to the internal terminal block located in the oil tank.

[0020] Fix the conductive rod to the oil tank.

[0021] Optionally, in the above method for installing the transformer conductive rod, the step of fixing the conductive rod specifically includes:

[0022] Assemble the sealing element by fitting the sealing element into the sealing groove;

[0023] The conductive rod is fixed, and the connection between the connecting part and the oil tank is locked with fasteners.

[0024] As can be seen from the above scheme, the transformer conductive rod installation structure disclosed in this application facilitates the connection between the conductive rod and the oil tank by setting the connecting part and the insulating box wall, eliminating the need for a hand hole in the oil tank, thus improving the convenience of conductive rod installation and simplifying the assembly process. Furthermore, by eliminating the hand hole, the material cost of the transformer can be reduced, the poor sealing caused by the hand hole can be improved, and the risk of oil tank leakage can be reduced. The oil tank uses an insulating box wall instead of the previous non-magnetic steel box wall, which does not generate stray losses or heat, and can reduce the volume of the oil tank.

[0025] The transformer conductive rod installation method disclosed in this application has the same technical effects as the transformer conductive rod installation structure, and will not be described again. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the transformer conductive rod mounting structure disclosed in the embodiments of this application;

[0028] Figure 2 This is a flowchart of the transformer conductive rod installation method disclosed in the embodiments of this application.

[0029] Among them, 10 is the oil tank and 11 is the insulating box wall;

[0030] 20 is the conductive rod, 21 is the conductive rod body, and 22 is the connecting part;

[0031] 30 is a sealing element;

[0032] 40 is an internal wiring piece;

[0033] 50 represents fasteners;

[0034] 60 is for press parts. Detailed Implementation

[0035] In addition to the problems mentioned in the background technology, existing tank walls are usually made of non-magnetic steel plates. The main purpose of non-magnetic steel plates is to reduce stray losses and avoid overheating of the tank walls. However, as the current continues to increase, the performance of non-magnetic steel plates will reach the theoretical limit. Continuing to use this type of structure will not only increase the tank volume, but also will not significantly improve the stray losses on the tank walls, thus reducing the cost-effectiveness of the transformer.

[0036] The core of this application is to disclose a transformer conductive rod installation structure to improve the cumbersome assembly of the conductive rod and reduce the risk of oil leakage from the oil tank.

[0037] Another key aspect of this application is the disclosure of an installation method for the aforementioned transformer conductive rod mounting structure.

[0038] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0039] like Figure 1 As shown in the figure, this application discloses a transformer conductive rod mounting structure, including an oil tank 10, a conductive rod 20, and a sealing element 30.

[0040] The conductive rod 20 includes a conductive rod body 21 and a connecting part 22. The connecting part 22 is connected to the conductive rod body 21 and is used to connect to the oil tank 10. The oil tank 10 includes an insulating box wall 11, which is connected to the connecting part 22 and is detachably connected to the oil tank 10. A sealing element 30 is provided between the conductive rod 20 and the oil tank 10. The insulating box wall 11 can be made of organic insulating material or non-polar insulating material. Organic insulating materials include, but are not limited to, polytetrafluoroethylene (PTFE) boards, and non-polar insulating materials include, but are not limited to, ceramic insulating boards. The above materials are only examples, and the specific material type can be determined according to actual needs.

[0041] When installing the conductive rod 20, first place the transformer body in the oil tank 10, then connect the conductive rod body 21 to the internal connecting piece 40 of the transformer body, then pass the conductive rod 20 through the first mounting hole of the insulating box wall 11 of the oil tank 10, connect the insulating box wall 11 to the connecting part 22, and then connect the insulating box wall 11 to the oil tank body of the oil tank 10. The conductive rod 20 is fixed by the insulating box wall 11, and the installation is completed.

[0042] The transformer conductive rod installation structure disclosed in this application facilitates the connection between the conductive rod 20 and the oil tank 10 by providing a connecting part 22 and an insulating box wall 11. This eliminates the need for a handhole in the oil tank 10, improving the ease of installation and simplifying the assembly process. Furthermore, eliminating the handhole reduces the material cost of the transformer, improves the poor sealing caused by the handhole, and reduces the risk of oil leakage from the oil tank 10. The oil tank 10 uses an insulating box wall 11 instead of the previous non-magnetic steel box wall, which avoids stray losses and heat generation, allowing for a smaller volume of the oil tank 10. The transformer conductive rod installation structure disclosed in this application is applicable to conductive busbars or U-shaped water-cooled conductive rods.

[0043] In some specific embodiments, such as Figure 1As shown, the conductive rod 20 is connected to the oil tank 10 via fasteners 50. The insulating box wall 11 has a first mounting hole, and the connecting part 22 has a second mounting hole. The fastener 50 passes through the first mounting hole and is threaded into the second mounting hole. Specifically, the fastener 50 is preferably a screw, which passes through the first mounting hole and is threaded into the second mounting hole. The screw protrudes from one side of the oil tank 10 and is locked by a nut. Preferably, the connecting part 22 is connected to the insulating box wall 11 via at least two fasteners 50. Each fastener 50 is preferably located on both sides of the axis of the conductive rod body 21 to improve the firmness and stability of the connection between the conductive rod 20 and the oil tank 10. The nut is located on the outside of the oil tank 10, which reduces the risk of foreign objects falling into the oil tank 10 during installation through the handhole. In some specific embodiments, a pressure member 60 is provided on the outside of the insulating box wall 11. The pressure member 60 has a third mounting hole, and the fastener 50 passes through the third mounting hole, the first mounting hole, and the second mounting hole in sequence, threaded into each other. The pressure member 60 can protect the insulation box wall 11. The material of the pressure member 60 includes, but is not limited to, stainless steel.

[0044] In some specific embodiments, such as Figure 1 As shown, the connecting portion 22 is configured as a plate-like structure extending outward from the conductive rod body 21. Specifically, the connecting portion 22 is configured to be located on any side of the conductive rod body 21 in the radial direction perpendicular to the axis of the conductive rod body 21, or the connecting portion 22 is configured to surround the axis of the conductive rod body 21. Specifically, the connecting portion 22 can be located on any side of the axial direction of the conductive rod body 21, such as... Figure 1 As shown, the connecting part 22 can be located above, below, to the left or right of the axis of the conductive rod body 21. Of course, the connecting part 22 can also be arranged around the axis of the conductive rod body 21. This method is preferred, as it can ensure the firmness and stability of the connection.

[0045] In some specific embodiments, the connecting part 22 is detachably connected to the conductive rod body 21 or is not detachably connected. Detachable connection methods include, but are not limited to, connection through connectors. Non-detachable connection methods include, but are not limited to, welding connection and adhesive connection. Welding connection is preferred to ensure the firmness of the connection.

[0046] In some specific embodiments, to facilitate the installation of the seal 30, the connecting part 22 is provided with a sealing groove for installing the seal 30; and / or, the insulating box wall 11 is provided with a sealing groove for installing the seal 30. Preferably, the connecting part 22 is provided with sealing grooves on both the side near the insulating box wall 11 and the outer side of the insulating box wall 11, so that the seal 30 is provided on both the inner and outer sides of the oil tank 10 to enhance the sealing performance. Specifically, the seal 30 includes a sealing ring or a sealing airbag. When the seal 30 is a sealing airbag, the sealing airbag is connected to an air source through an air pipe. A valve may also be provided on the air pipe, and the opening and closing of the valve realizes the opening and closing of the air pipe to realize the inflation or cessation of inflation of the sealing airbag. When the seal 30 is a sealing ring, the material of the sealing ring includes, but is not limited to, rubber sealing rings and silicone sealing rings.

[0047] Based on the above embodiments, in order to further improve the sealing performance, in some specific embodiments, a sealing structure is provided between the clamping part of the fastener 50 and the insulating box wall 11. Specifically, the clamping part of the fastener 50 is preferably a nut, and a sealing structure is provided between the nut and the insulating box wall 11. The sealing structure is preferably a sealing ring, so as to cooperate with the sealing element 30 to form a multiple sealing structure and improve the sealing performance of the oil tank 10.

[0048] Furthermore, this application also discloses a method for installing a transformer conductive rod, used in the transformer conductive rod installation structure described above, comprising the following steps:

[0049] Step S1: Place the transformer body in the oil tank 10;

[0050] The transformer body includes an iron core and a coil wound around the iron core, and the conductive rod body 21 is connected to the internal connecting piece 40 located inside the oil tank 10.

[0051] Step S2: Fix the conductive rod 20;

[0052] To fix the conductive rod 20 to the oil tank 10, firstly, assemble the sealing element 30 into the sealing groove, then pass the conductive rod body 21 through the first mounting hole of the insulating box wall 11 of the oil tank 10, and then lock the connecting part 22 to the insulating box wall 11 of the oil tank 10 with the fastener 50, thus fixing the insulating box wall 11 to the oil tank body of the oil tank 10. Preferably, the insulating box wall 11 and the oil tank body are detachably connected, preferably by bolts and nuts. It should be noted that the sealing element 30 can also be installed after the step of the conductive rod body 21 passing through the first mounting hole of the insulating box wall 11 of the oil tank 10, and can be adjusted according to the actual situation.

[0053] It should be noted that the various embodiments in this specification focus on the differences from other embodiments, and the same or similar parts between the various embodiments can be referred to each other.

[0054] The terminology used in the above embodiments is for the purpose of describing specific embodiments only and is not intended to be limiting of this application. As used in the specification and appended claims of this application, the singular expressions "a," "an," "the," "the," "the," and "this" are intended to also include expressions such as "one or more," unless the context clearly indicates otherwise. It should also be understood that in the embodiments of this application, "one or more" refers to one, two, or more; "and / or" describes the relationship between related objects, indicating that three relationships may exist; for example, A and / or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship.

[0055] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0056] The "multiple" mentioned in the embodiments of this application refers to two or more. It should be noted that in the description of the embodiments of this application, terms such as "first" and "second" are used only for the purpose of distinguishing descriptions and should not be construed as indicating or implying relative importance, nor should they be construed as indicating or implying order.

[0057] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A transformer conductive rod mounting structure, characterized in that, include: Fuel tank (10); The conductive rod (20) includes a conductive rod body (21) and a connecting part (22). The connecting part (22) is connected to the conductive rod body (21) and is used to connect to the oil tank (10). The oil tank (10) includes an insulating box wall (11). The insulating box wall (11) is connected to the connecting part (22) and is detachably connected to the oil tank (10). A sealing element (30) is disposed between the conductive rod (20) and the oil tank (10).

2. The transformer conductive rod mounting structure as described in claim 1, characterized in that, The conductive rod (20) is connected to the oil tank (10) by a fastener (50). The insulating box wall (11) has a first mounting hole, and the connecting part (22) has a second mounting hole. The fastener (50) passes through the first mounting hole and is threaded into the second mounting hole.

3. The transformer conductive rod mounting structure as described in claim 2, characterized in that, The connecting part (22) is configured as a plate-like structure extending outward from the conductive rod body (21).

4. The transformer conductive rod mounting structure as described in claim 3, characterized in that, The connecting portion (22) is configured to be located on any side of the conductive rod body (21) in a radial direction perpendicular to the axis of the conductive rod body (21); or, the connecting portion (22) is configured to be arranged around the axis of the conductive rod body (21).

5. The transformer conductive rod mounting structure as described in claim 1, characterized in that, The connecting part (22) can be detachably connected to the conductive rod body (21) or not detachably connected.

6. The transformer conductive rod mounting structure as described in claim 2, characterized in that, The connecting part (22) has a sealing groove for installing the sealing element (30); and / or, the insulating box wall (11) is provided with a sealing groove for installing the sealing element (30).

7. The transformer conductive rod mounting structure as described in claim 6, characterized in that, A sealing structure is provided between the clamping part of the fastener (50) and the insulating box wall (11).

8. The transformer conductive rod mounting structure as described in claim 6, characterized in that, The seal (30) includes a sealing ring or a sealing airbag.

9. A method for installing a transformer conductive rod, used in the transformer conductive rod installation structure as described in any one of claims 1-8, comprising the steps of: The transformer body is placed in the oil tank (10), the transformer body includes an iron core and a coil wound around the iron core, and the conductive rod body (21) is connected to the internal terminal piece (40) located in the oil tank (10); Fix the conductive rod (20) to the oil tank (10).

10. The transformer conductive rod installation method as described in claim 9, characterized in that, The steps for fixing the conductive rod (20) specifically include: Assemble the sealing element (30) by assembling the sealing element (30) into the sealing groove; The conductive rod (20) is fixed, and the connecting part (22) is locked to the oil tank (10) by fasteners (50).

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