Insulation base plate device for rectifier transformer valve side conducting bar

Abstract

The utility model provides an insulating backing plate device for a rectifier transformer valve side conducting bar, which comprises two insulating backing plates arranged in parallel, the opposite end faces of the two insulating backing plates are provided with step clamping grooves, and the valve side conducting bar is arranged in the step clamping groove between the two insulating backing plates; a fixing piece is arranged on the insulating base plate and connected with the wall of a transformer oil tank. The valve side conducting bar is clamped and fixed through the stepped clamping grooves formed in the two insulating base plates, the valve side conducting bar can be effectively clamped and supported, the problem of oil leakage caused by long-time falling and movement in operation of the valve side conducting bar is thoroughly solved, and the insulating base plate device is simple and easy and reliable to install.

Description

Technical Field

[0001] The utility model belongs to the field of transformer equipment, and particularly belongs to an insulating cushion plate device for a valve side busbar of a rectifier transformer. Background Technique

[0002] In recent years, with the rapid development of China's power equipment, the export of special transformer equipment has been increasing year by year. At the same time, there are more and more rectifier transformers used in the chemical industry. In existing rectifier transformers, the valve side outgoing lines are mostly arranged as busbars, that is, the busbars are connected to the input end of the rectifier cabinet with external copper bars. Since the valve side current output current is large, in order to cope with the influence of heat and electromagnetic force brought by the large current, busbars made of materials with higher conductivity, higher heat resistance and higher strength are often used. However, these materials often have higher densities, which will lead to a large self-weight of the busbars in the valve side busbars. As a result, the busbars will sink at the installation position, making it difficult to install the valve side busbars. Moreover, when the rectifier transformer is installed on site, an external copper bar is also required to be connected to the rectifier cabinet on the valve side busbar, which will further increase the downward force on the valve side guide busbar. Then, the connection between the existing valve side busbar and the transformer only relies on setting several installation holes on the valve side busbar and the vertical copper bar, and bolts are passed through the installation holes to connect the valve side busbar with the transformer. Although this connection method can fix the valve side busbar on the transformer, as the downward force of the valve side busbar increases, this connection method is not sufficient to balance this downward force. Therefore, during the long-term operation process, due to the uneven force on the sealing ring, the valve side busbar is extremely prone to oil leakage, affecting the use of the transformer. Content of the Utility Model

[0003] In order to solve the problem that in the existing transformer, the busbar is fixed by screws, and during the long-term use process, under the action of the downward force, the sealing gasket between the valve side busbar and the transformer oil tank is unevenly stressed, and the valve side busbar is extremely prone to oil leakage, the utility model provides an insulating cushion plate device for a valve side busbar of a rectifier transformer

[0004] To achieve the above object, the utility model provides the following technical solutions:

[0005] The utility model provides an insulating cushion plate device for a valve side busbar of a rectifier transformer, which includes two insulating cushion plates arranged in parallel. Step-shaped card slots are arranged on the opposite end faces of the two insulating cushion plates, and a valve side busbar is installed in the step-shaped card slots between the two insulating cushion plates;

[0006] Fixing pieces are arranged on the insulating cushion plates, and the fixing pieces are connected to the transformer oil tank wall.

[0007] Preferably, the step-shaped card slot includes a second card slot and a first card slot, and the first card slot is arranged on the side of the second card slot.

[0008] Preferably, an insulating fastener is arranged between the two insulating backing plates. The insulating fastener includes a connecting rod. Fixing holes are arranged on the insulating backing plates, the connecting rod is installed in the fixing holes, and fixing heads are arranged at both ends of the connecting rod.

[0009] Preferably, a first insulating layer is arranged on the outer wall of the fixing head.

[0010] Preferably, the fixing member includes a connecting seat which is fixed on the wall of the transformer oil tank. An insulating connecting member is connected to the connecting seat, and the insulating connecting member is connected to the insulating backing plate.

[0011] Preferably, the insulating connecting member includes a screw rod. Connecting holes are arranged on the insulating backing plates, threaded holes corresponding to the connecting holes are arranged on the connecting seat, the screw rod is installed in the corresponding connecting holes and threaded holes, and a connecting head is arranged at one end of the screw rod far away from the connecting seat.

[0012] Preferably, a second insulating layer is arranged on the outer wall of the connecting head.

[0013] Preferably, a gasket is arranged between the connecting seat and the wall of the transformer oil tank.

[0014] Preferably, an elastic pad is installed between the insulating backing plate and the connecting seat.

[0015] Preferably, the insulating backing plate is a man-made fiber board.

[0016] Compared with the prior art, the utility model has the following beneficial technical effects:

[0017] The utility model provides an insulating backing plate device for a valve-side busbar of a rectifier transformer. The device clamps and fixes the valve-side busbar through the stepped clamping grooves arranged on the two insulating backing plates, can effectively clamp and support the valve-side busbar, and completely solves the problem of oil leakage caused by the long-term downward drop and the running displacement of the valve-side busbar. The insulating backing plate device is simple and the installation is simple and reliable.

[0018] Furthermore, in the device, the second clamping groove and the first clamping groove form a stepped clamping groove to fix the valve-side busbar, realizing double stable clamping, greatly enhancing the installation firmness of the valve-side busbar, keeping stable and not loose even in a vibration or impact environment, improving the operation safety of the rectifier transformer, reducing the fault risk caused by poor contact, optimizing the electrical insulation performance, and ensuring the reliability and efficiency of current transmission.

[0019] Furthermore, in this device, the overall stability of the fixed conductive bar is enhanced by insulating fasteners. Then, the connecting rod passes through the fixing holes, and the fixing heads at both ends ensure the tight connection between the fasteners and the insulating backing plate, forming a more stable support structure, effectively preventing the loosening or displacement of the conductive bar during long-term operation.

[0020] Furthermore, in this device, a fixing member including a connecting seat and an insulating connecting member is adopted to firmly connect the insulating backing plate to the transformer oil tank wall, enhancing the connection strength between the insulating backing plate and the transformer oil tank wall, ensuring the stable fixation of the conductive bar under various working conditions. The connecting seat serves as a stable support point, and the insulating backing plate is tightly fixed to the oil tank wall through the insulating connecting member, effectively preventing loosening or detachment caused by vibration or impact, improving the reliability and safety of the overall structure. The use of the insulating connecting member further enhances the electrical insulation performance, avoiding the conduction of current through the fixing member to the oil tank wall and reducing the risk of electrical faults. At the same time, the stable connection also reduces the possibility of mechanical faults caused by loosening.

[0021] Furthermore, in this device, an insulating connecting member including a screw is adopted. The insulating backing plate is tightly connected to the connecting seat through the screw, strengthening the connection tightness between the insulating backing plate and the transformer oil tank wall. The screw passes through the connecting hole on the insulating backing plate and tightly fits with the threaded hole on the connecting seat, and the stable connection is achieved by rotating the connecting head, effectively preventing the displacement or detachment of the conductive bar caused by loosening, improving the flexibility and adaptability of the structure. The screw connection design allows for fine adjustment during the installation process to ensure the precise alignment between the insulating backing plate and the conductive bar, while adapting to the requirements of conductive bars of different specifications and models.

[0022] Furthermore, a sealing gasket is provided between the connecting seat and the transformer oil tank wall in this device. The connection between the connecting seat and the transformer oil tank wall is sealed through the insulating sealing gasket, improving the sealing performance between this device and the transformer oil tank wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic structural diagram of an insulating backing plate device for the valve side conductive bar of a rectifier transformer proposed by the present utility model;

[0024] Figure 2 It is a schematic connection diagram of an insulating backing plate device for the valve side conductive bar of a rectifier transformer proposed by the present utility model and the transformer oil tank wall;

[0025] Figure 3 It is a front view structural schematic diagram of the insulating backing plate in an insulating backing plate device for the valve side conductive bar of a rectifier transformer proposed by the present utility model;

[0026] Figure 4The top view structural schematic diagram of the insulating backing plate in an insulating backing plate device for the valve side current-carrying busbar of a rectifier transformer proposed by the present utility model;

[0027] In the attached drawings: 1. Insulating backing plate; 10. Fixed hole; 11. Connection hole; 12. First card slot; 13. Second card slot; 2. Current-carrying busbar; 3. Transformer oil tank wall; 4. Insulating connector; 5. Connection seat; 6. Insulating fastener. Detailed implementation manners

[0028] In the following text, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present utility model. Therefore, the attached drawings and the description are considered to be exemplary in nature rather than restrictive.

[0029] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the attached drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0030] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more, unless otherwise specifically defined.

[0031] In the present utility model, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0032] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on the top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under" and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is less than that of the second feature.

[0033] The embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

[0034] See Figures 1 to 4 , the present utility model provides an insulating pad device for a valve-side busbar. The device includes two insulating pads 1. The insulating pads 1 are made of artificial fiber boards. A first card slot 12 is provided on one end face of each insulating pad 1. A second card slot 13 is provided on one side of the first card slot 12 on the insulating pad 1. The second card slot 13 and the first card slot 12 form a stepped card slot. A valve-side busbar 2 is installed in the stepped card slot, and the valve-side busbar 2 is fixed through the stepped card slot. Fixing holes 10 are provided on the end face of each insulating pad 1 that is parallel to the end face where the first card slot 12 is provided. And two fixing holes 10 are provided on each insulating pad 1. The two fixing holes 10 are symmetrically arranged with respect to the center line of the end face of the insulating pad 1 where they are located. At the same time, the fixing holes 10 are close to the end positions of their respective end faces. Insulating fasteners 6 are installed in the corresponding fixing holes 10 on the two insulating pads 1. The two insulating pads 1 are fixed on both sides of the valve-side busbar 2 through the insulating fasteners 6 to clamp and support the valve-side busbar 2. The insulating fasteners 6 include connecting rods. The connecting rods are installed in the corresponding fixing holes 10. Fixing heads are provided at both ends of the connecting rods. A first insulating layer is provided on the outer wall of the fixing heads.

[0035] See Figures 2 to 4, a fixing member is connected to the insulating backing plate 1, and the fixing member is connected to the transformer oil tank wall 3 to fix the valve-side busbar 2 to the transformer oil tank wall 3, realizing the installation of the valve-side busbar 2 in the transformer oil tank. Through the cooperation of the fixing member and the two insulating backing plates 1, the gasket between the valve-side busbar 2 and the transformer oil tank wall 3 is evenly compressed, solving the problem of oil leakage caused by the long-term downward drop and the movement during operation of the valve-side busbar 2; the fixing member includes an insulating connecting member 4. On the end face of the insulating backing plate 1 perpendicular to the set fixing hole 10 and parallel to the length direction of the stepped card slot, a connecting hole 11 is provided, and the other end of the connecting hole 11 penetrates through the other end face of the insulating backing plate 1. The insulating connecting member 4 is connected in the connecting hole 11 on the insulating backing plate 1, and a connecting seat 5 is connected to the insulating connecting member 4. The connecting seat 5 is fixed to the transformer oil tank wall 3 by fixing screws, and the stability of the connection between the insulating backing plate 1 and the transformer oil tank wall 3 is increased through the insulating connecting member 4 and the connecting seat 5.

[0036] Preferably, an insulating gasket is provided between the connecting seat 5 and the transformer oil tank wall 3 to seal between the connecting seat 5 and the transformer oil tank wall 3, improving the sealing performance between the device and the transformer oil tank wall 3. An elastic gasket is installed between the insulating backing plate 1 and the connecting seat 5 to play a role in preventing loosening and ensuring the tightness and reliability of the connection between the insulating backing plate 1 and the connecting seat 5.

[0037] The insulating connecting member 4 includes a screw rod. The screw rod is installed in the connecting hole 11. At the position corresponding to the connecting hole 11 on the connecting seat 5, a mounting hole is provided. One end of the screw rod is screwed into the threaded hole to stably connect the insulating backing plate 1 and the connecting seat 5 together. On the end of the screw rod far from the connecting seat 5, a second insulating layer is provided on the outer wall of the connecting head.

[0038] Specifically, when installing the insulating backing plate device for the valve-side busbar of the present utility model, as Figure 2 shown, first install the valve-side busbar 2 on the transformer oil tank wall 3, then fix one insulating backing plate 1 to the outer package of the valve-side busbar 2 through the stepped card slot, and install it on the connecting seat 5 through the insulating connecting member 4. Then install another insulating backing plate 1 on the transformer oil tank wall 3 in the same way. Finally, connect the two insulating backing plates 1 into a whole through the insulating fastener 6 to completely fix and lock the valve-side busbar 2.

[0039] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and without departing from the spirit or basic features of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

[0040] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art. The above content is only to illustrate the technical idea of the present utility model, and the protection scope of the present utility model cannot be limited thereby. Any modification made on the basis of the technical solution according to the technical idea proposed by the present utility model falls within the protection scope of the claims of the present utility model.

Claims

1. An insulating backing plate device for the valve side busbar of a rectifier transformer, characterized in that, It includes two insulating pads (1) arranged in parallel. Step-shaped card slots are provided on the opposite end faces of the two insulating pads (1), and a valve-side conductive bar (2) is installed in the step-shaped card slots between the two insulating pads (1). There are fixing parts on the insulating pads (1), and the fixing parts are installed on the transformer oil tank wall (3).

2. The insulating backing plate device for the valve side busbar of a rectifier transformer according to claim 1, characterized in that, The step-shaped card slot includes a second card slot (13) and a first card slot (12), and the first card slot (12) is arranged on the side of the second card slot (13).

3. The insulating spacer device for the valve side busbar of a rectifier transformer according to claim 1, characterized in that, An insulating fastener (6) is arranged between the two insulating pads (1). The insulating fastener (6) includes a connecting rod. Fixing holes (10) are provided on the insulating pads (1), the connecting rod is installed in the fixing holes (10), and fixing heads are arranged at both ends of the connecting rod.

4. The insulating backing plate device for the valve side busbar of a rectifier transformer according to claim 3, characterized in that A first insulating layer is provided on the outer wall of the fixing head.

5. The insulating backing plate device for the valve side busbar of a rectifier transformer according to claim 1, characterized in that, The fixing part includes a connecting seat (5). The connecting seat (5) is fixed on the transformer oil tank wall (3), and an insulating connecting piece (4) is connected to the connecting seat (5), and the insulating connecting piece (4) is connected to the insulating pad (1).

6. The insulating backing plate device for the valve side busbar of a rectifier transformer according to claim 5, wherein The insulating connecting piece (4) includes a screw. Connecting holes (11) are provided on the insulating pads (1), threaded holes are provided at positions corresponding to the connecting holes (11) on the connecting seat (5), the screw is installed in the corresponding connecting holes (11) and the threaded holes, and a connecting head is arranged at one end of the screw far from the connecting seat (5).

7. The insulating spacer device for the valve side busbar of a rectifier transformer according to claim 6, wherein A second insulating layer is provided on the outer wall of the connecting head.

8. The insulating spacer device for the valve-side busbar of a rectifier transformer according to claim 6, wherein, A gasket is arranged between the connecting seat (5) and the transformer oil tank wall (3).

9. The insulating backing plate device for the valve side busbar of a rectifier transformer according to claim 5, characterized in that, An elastic pad is installed between the insulating pad (1) and the connecting seat (5).

10. A kind of insulating backing plate device for the valve side busbar of a rectifier transformer according to claim 1, characterized in that, The insulating pad (1) is a man-made fiber board.

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