Transformer shielding tube lead adjusting structure

Abstract

The utility model relates to a kind of transformer shielding tube lead wire adjusting structure, including shielding tube lead wire, shielding tube fixed component and support, wherein shielding tube lead wire is fixed by shielding tube fixed component;Shielding tube fixed component includes fixed seat, the lower side of fixed seat is equipped with clamping block, support front end is fixedly connected with fixed seat by clamping block clamping, rear end is installed on the mounting rack body outside transformer body;Angle spacer is equipped between support front end and fixed seat, and angle spacer is inserted in the clearance between two clamping blocks inner end.The utility model adjusts shielding tube lead wire own angle by angle spacer to cooperate with installation needs, can ensure installation quality, also improve installation efficiency, while operation is also simple and convenient.

Description

Technical Field

[0001] This utility model relates to the field of transformer technology, specifically a transformer shielding tube lead adjustment structure. Background Technology

[0002] In existing technologies, when the voltage level of a transformer is greater than or equal to 330kV, a shielding tube structure is used on the outside of its leads to uniformize the electric field. The shielding tube leads generally need to be adjusted to match the transformer bushings. However, in existing technologies, when using shielding tube leads, it is often encountered that the shielding tube has an angle. This is because, in order to meet the external insulation distance requirements, the transformer bushings that match the shielding tube leads often have an angle, and there are often cases of combined angles, which makes the adjustment of the shielding tube leads quite difficult.

[0003] Existing commonly used shielding tube lead adjustment structures achieve adjustment by adjusting the support structure. This operation is time-consuming and labor-intensive, and improper adjustment can easily lead to poor shielding performance. For example, patent CN203617100U discloses an adjustment structure for the shielding tube of an ultra-high voltage converter transformer lead. It inserts the valve-side lead shielding tube and the valve-side coil primary wire shielding tube into both ends of a connecting tube. Multiple fixing devices are evenly distributed along the circumference of the connecting tube. Each fixing device includes a fastening screw and a positioning block. The fastening screw passes through the connecting tube and connects to the positioning block. When the two shielding tubes are aligned and the height and angle of the valve-side lead wire protrusion meet the requirements, the operator tightens the fastening screw to secure the positioning block inside the shielding tube. However, because the connecting tube is a straight pipe, this structure is not suitable for adjusting the angle of the shielding tube itself. Utility Model Content

[0004] The purpose of this utility model is to provide a transformer shield tube lead adjustment structure, which uses angle shims to adjust the angle of the shield tube lead itself to meet the installation requirements, which can not only ensure the installation quality and improve the installation efficiency, but also make the operation simple and convenient.

[0005] The objective of this utility model is achieved through the following technical solution: A transformer shielding tube lead adjustment structure includes a shielding tube lead, a shielding tube fixing assembly, and a bracket. The shielding tube lead is fixed by the shielding tube fixing assembly. The shielding tube fixing assembly includes a fixing seat, a clamping block on the lower side of the fixing seat, and the front end of the bracket is clamped and fixed to the fixing seat by the clamping block, while the rear end is installed on the mounting frame on the outside of the transformer body. An angle shim is provided between the front end of the bracket and the fixing seat, and the angle shim is inserted into the gap between the two clamping blocks.

[0006] The clamping block of the fixed base is fixedly connected to the front end of the bracket by clamping block bolts and clamping block nuts, wherein the clamping block bolts pass through the clamping block and the front end of the bracket and are threadedly connected to the clamping block nuts.

[0007] The shielding tube fixing assembly includes an insulating sleeve fitted onto the shielding tube lead wire, a groove on the fixing base to support the insulating sleeve, and an insulating fixing band on the outside of the insulating sleeve to be fixedly connected to the fixing base.

[0008] The fixing base has fixing platforms on both sides, and the two ends of the insulating fixing strip are respectively fixed to the fixing platforms on the corresponding sides by fastening bolts.

[0009] A connecting gasket is provided between the end of the insulating fixing strip and the corresponding side fixing platform.

[0010] The angle shim includes a shim body and a limiting part located at one end of the shim body. The shim body is inserted into the inner end of the gap between two clamping blocks, and the limiting part abuts against the clamping blocks to limit the movement.

[0011] The mounting frame is equipped with an adjustment plate that can adjust the position, and the rear end of the bracket is mounted on the adjustment plate.

[0012] The adjustment plate is provided with multiple adjustment elongated holes, and the mounting frame is provided with fixing screw holes. The adjustment plate is fixed to the mounting frame by mounting bolts, and the mounting bolts are threaded into the corresponding fixing screw holes after passing through the corresponding adjustment elongated holes.

[0013] The advantages and positive effects of this utility model are as follows: 1. This utility model has a clamping block on the lower side of the fixing seat of the shielding tube fixing assembly, which clamps and fixes the front end of the bracket. An angle shim is provided at the inner end of the gap between the two clamping blocks to adjust the tilt angle of the shielding tube lead wire as needed during installation. This can ensure the installation quality and improve the installation efficiency.

[0014] 2. This utility model uses clamping bolts and clamping nuts to fix the lower clamping block of the fixed base to the front end of the bracket. When the clamping bolts and clamping nuts are loosened, the clamping block no longer clamps the front end of the bracket. At this time, angle shims can be inserted into the gap between the two clamping blocks or pulled out from the gap as needed. After the number of angle shims is adjusted, the clamping bolts and clamping nuts are tightened again to fix the angle shims and fix the clamping block to the front end of the bracket. The operation is simple and convenient.

[0015] 3. This utility model utilizes the insulating fixing strip in the shielding tube fixing assembly to fix the fixing platforms on both sides of the fixing base to fix the shielding tube lead wire. Furthermore, a connecting gasket can be set between the end of the insulating fixing strip and the corresponding side fixing platform as needed, which can ensure that the insulating fixing strip fully grips the insulating sleeve.

[0016] 4. This utility model can further fine-tune the position of the bracket according to the installation needs, so as to further meet the installation needs and fully guarantee the installation quality. Attached Figure Description

[0017] Figure 1 This is the front view of the present invention. Figure 2 for Figure 1 Right view of the present invention. Figure 3 for Figure 1 Schematic diagram of the structure of the middle shielding tube fixing assembly. Figure 4 for Figure 3 Right view of the middle shielding tube fixing assembly. Figure 5 for Figure 3 Top view of the adjusting shim.

[0018] Among them, 1 is the shielded tube lead wire, 2 is the shielded tube fixing assembly, 201 is the insulating sleeve, 202 is the insulating fixing strip, 203 is the fastening bolt, 204 is the fixing seat, 2041 is the clamping block, 2042 is the clamping block nut, 2043 is the clamping block bolt, 2044 is the fixing platform, 205 is the connecting gasket, 3 is the angle gasket, 301 is the limiting part, 302 is the gasket body, 4 is the bracket, 5 is the mounting frame, 501 is the mounting beam, 6 is the adjusting plate, and 601 is the adjusting elongated hole. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings.

[0020] like Figures 1-2 As shown, this utility model includes a shielded tube lead wire 1, a shielded tube fixing assembly 2, and a bracket 4, wherein the shielded tube lead wire 1 is fixed by the shielded tube fixing assembly 2; as Figures 3-5 As shown, the shielding tube fixing assembly 2 includes a fixing base 204, and a clamping block 2041 is provided on the lower side of the fixing base 204. The front end of the bracket 4 is clamped and fixed to the fixing base 204 by the clamping block 2041, and the rear end is installed on the mounting frame 5 on the outside of the transformer body. An angle shim 3 is provided between the front end of the bracket 4 and the fixing base 204, and the angle shim 3 is inserted into the inner end of the gap between the two clamping blocks 2041. Figure 2 As shown, when this utility model is working, the shielded tube lead 1 is fixed by the shielded tube fixing assembly 2, and the fixing seat 204 in the shielded tube fixing assembly 2 is supported by the bracket 4 to form a certain tilt angle. At the same time, this utility model can adjust the number of angle shims 3 by pulling out or inserting angle shims 3, thereby fine-tuning the tilt angle of the fixing seat 204 relative to the bracket 4, that is, fine-tuning the tilt angle of the shielded tube lead 1, so as to facilitate the installation and connection of the shielded tube lead 1.

[0021] like Figures 3-4 As shown, in this embodiment, the clamping block 2041 of the fixed base 204 is fixedly connected to the front end of the bracket 4 by the clamping block bolt 2043 and the clamping block nut 2042. The clamping block bolt 2043 passes through the clamping block 2041 and the front end of the bracket 4 and is threadedly connected to the clamping block nut 2042. When adjustment is required, the operator loosens the clamping block nut 2042 so that the two clamping blocks 2041 no longer clamp the front end of the bracket 4. At this time, the angle shim 3 can be inserted into the inner end of the gap between the two clamping blocks 2041 or pulled out from the inner end of the gap between the two clamping blocks 2041 to achieve quantity adjustment. After adjustment, the operator tightens the clamping block bolt 2043 and the clamping block nut 2042. This achieves both the fixed connection between the clamping block 2041 and the front end of the bracket 4 and the limiting and fixing of the angle shim 3, making the operation simple and convenient.

[0022] like Figures 3-4 As shown, in this embodiment, the shielding tube fixing assembly 2 includes an insulating sleeve 201 sleeved on the shielding tube lead 1, and a groove on the fixing seat 204 to support the insulating sleeve 201. An insulating fixing band 202 is provided on the outside of the insulating sleeve 201 and is fixedly connected to the fixing seat 204, thereby achieving the purpose of tightly fixing the insulating sleeve 201 (i.e., the shielding tube lead 1) to the fixing seat 204.

[0023] like Figures 3-4 As shown in this embodiment, the fixing base 204 is provided with fixing platforms 2044 on both sides. The two ends of the insulating fixing strip 202 are respectively fixed to the fixing platforms 2044 on the corresponding sides by fastening bolts 203. A connecting gasket 205 can be provided between the end of the insulating fixing strip 202 and the fixing platform 2044 on the corresponding side as needed. This can ensure that the insulating fixing strip 202 tightly hugs the insulating sleeve 201, thereby preventing the shielding tube lead wire 1 from moving.

[0024] like Figure 3 and Figure 5 As shown, in this embodiment, the angle shim 3 includes a shim body 302 and a limiting part 301 disposed at one end of the shim body 302. The shim body 302 is inserted into the inner end of the gap between two clamping blocks 2041, and the limiting part 301 abuts against the clamping blocks 2041 to limit the angle shim 3, thus facilitating its removal. In this embodiment, three types of angle shims 3 with thicknesses of 1mm, 3mm, and 5mm are provided for adjustment, and the adjustment height range can reach 0-50mm.

[0025] like Figure 1As shown, to further ensure the accurate installation position of the shielded tube lead 1, the mounting frame 5 is equipped with an adjustable plate 6, and the rear end of the bracket 4 is mounted on the adjustable plate 6. In this embodiment, the adjustable plate 6 is provided with multiple adjustable elongated holes 601, the mounting frame 5 is provided with multiple mounting beams 501, and the mounting beams 501 are provided with fixing screw holes. The adjustable plate 6 is fixed to the mounting frame 5 by mounting bolts, and the mounting bolts pass through the corresponding adjustable elongated holes 601 and are threaded into the corresponding fixing screw holes. During adjustment, after loosening each mounting bolt, the adjustable plate 6 can be pushed to move for fine adjustment. At this time, the mounting bolts move relative to each other along the corresponding adjustable elongated holes 601.

[0026] In this embodiment, the insulating sleeve 201 and the fixing seat 204 can be made of laminated cardboard, the insulating fixing strip 202 can be made of insulating paper tape, and the fasteners such as the fastening bolt 203, clamping bolt 2043, clamping nut 2042, and mounting bolt are all made of glass fiber insulating fasteners.

[0027] The working principle of this utility model is as follows: The installation of this utility model includes the following steps: Step 1: Select a bracket 4 with a suitable tilt angle according to the installation requirements, and install the rear end of the bracket 4 on the mounting frame 5 on the outside of the transformer body.

[0028] Step 2: Install the fixing seat 204 in the shielding tube fixing assembly 2 onto the front end of the bracket 4, and then fix the insulating sleeve 201 fitted on the shielding tube lead wire 1 onto the fixing seat 204 using the insulating fixing strap 202.

[0029] In this step, the front end of the bracket 4 is clamped by two clamping blocks 2041 on the lower side of the fixed seat 204, and then connected to the clamping block 2041 by clamping block bolts 2043 and clamping block nuts 2042. However, at this time, the clamping block bolts 2043 and clamping block nuts 2042 are not completely tightened to facilitate the subsequent insertion and adjustment of the angle shim 3.

[0030] In this step, such as Figure 4 As shown, the insulating fixing band 202 is wrapped around the insulating sleeve 201, and both ends of the insulating fixing band 202 are fixed to the fixing platforms 2044 on both sides of the fixing base 204 by fastening bolts 203 respectively. Connecting gaskets 205 can be provided between the end of the insulating fixing band 202 and the corresponding fixing platform 2044 as needed to ensure that the insulating fixing band 202 tightly hugs the insulating sleeve 201.

[0031] Step 3: Insert angle shims 3 into the gap between the two clamping blocks 2041 according to the installation requirements to further fine-tune the tilt angle of the shielding tube lead 1. After the tilt angle of the shielding tube lead 1 is determined, the operator tightens the clamping block bolts 2043 and clamping block nuts 2042 to achieve complete fixation of the fixing seat 204 and the front end of the bracket 4.

[0032] In this step, the operator can also fine-tune the position of bracket 4 according to installation needs. During adjustment, for example... Figure 1 As shown, the operator only needs to loosen the mounting bolts on the adjustment plate 6 and then push the adjustment plate 6 to move it to fine-tune the position of the bracket 4.

[0033] Step 4: After completing the above adjustments, the operator shall connect the shielding tube lead 1 to the transformer bushing.

Claims

1. A transformer shielding tube lead adjustment structure, characterized in that: The device includes a shielded tube lead wire (1), a shielded tube fixing assembly (2), and a bracket (4). The shielded tube lead wire (1) is fixed by the shielded tube fixing assembly (2). The shielded tube fixing assembly (2) includes a fixing seat (204), a clamping block (2041) is provided on the lower side of the fixing seat (204), the front end of the bracket (4) is clamped and fixed to the fixing seat (204) by the clamping block (2041), and the rear end is installed on the mounting frame (5) on the outside of the transformer body. An angle shim (3) is provided between the front end of the bracket (4) and the fixing seat (204), and the angle shim (3) is inserted into the gap between the two clamping blocks (2041).

2. The transformer shielding tube lead adjustment structure according to claim 1, characterized in that: The clamping block (2041) of the fixed base (204) is fixedly connected to the front end of the bracket (4) by clamping block bolt (2043) and clamping block nut (2042), wherein the clamping block bolt (2043) passes through the clamping block (2041) and the front end of the bracket (4) and is threadedly connected to the clamping block nut (2042).

3. The transformer shielding tube lead adjustment structure according to claim 1, characterized in that: The shielding tube fixing assembly (2) includes an insulating sleeve (201) sleeved on the shielding tube lead (1), and a groove for supporting the insulating sleeve (201) is provided on the fixing seat (204). An insulating fixing band (202) is provided on the outside of the insulating sleeve (201) and is fixedly connected to the fixing seat (204).

4. The transformer shielding tube lead adjustment structure according to claim 3, characterized in that: The fixing base (204) has fixing platforms (2044) on both sides, and the two ends of the insulating fixing strip (202) are respectively fixed to the fixing platforms (2044) on the corresponding sides by fastening bolts (203).

5. The transformer shielding tube lead adjustment structure according to claim 4, characterized in that: A connecting gasket (205) is provided between the end of the insulating fixing strip (202) and the corresponding side fixing platform (2044).

6. The transformer shielding tube lead adjustment structure according to claim 1, characterized in that: The angle shim (3) includes a shim body (302) and a limiting part (301) provided at one end of the shim body (302). The shim body (302) is inserted into the inner end of the gap between two clamping blocks (2041), and the limiting part (301) abuts against the clamping blocks (2041) for limiting.

7. The transformer shielding tube lead adjustment structure according to claim 1, characterized in that: The mounting frame (5) is provided with an adjustment plate (6) that can adjust the position, and the rear end of the bracket (4) is installed on the adjustment plate (6).

8. The transformer shielding tube lead adjustment structure according to claim 7, characterized in that: The adjusting plate (6) is provided with multiple adjusting elongated holes (601), and the mounting frame (5) is provided with fixing screw holes. The adjusting plate (6) is fixed to the mounting frame (5) by mounting bolts, and the mounting bolts are threaded into the corresponding fixing screw holes after passing through the corresponding adjusting elongated holes (601).

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