Transformer convenient to install insulating sleeve

Abstract

A transformer facilitating installation of insulating sleeves comprises a transformer body, a plurality of insulating sleeves are installed at the top of the transformer body, and a top plate is installed at the top of the transformer body; a plurality of mounting holes are formed in the top plate at intervals, the bottom wiring ends of the insulating sleeves are inserted into the mounting holes, a plurality of bottom plates are mounted on the mounting holes in a circumferential array mode, supporting rods are mounted on the bottom plates, and the supporting rods are vertically arranged; a limiting frame is installed on the outer end face of the supporting rod, the height of the limiting frame can be adjusted in the length direction of the supporting rod, and the bottom of the limiting frame can be fixed to the installation base in an extruding mode through a fastener. The top plate is arranged at the top of the transformer body, the mounting hole is formed in the top plate, the bottom wiring end of the insulating sleeve can be directly inserted into the mounting hole, the supporting rod and the limiting frame are matched, operation is convenient, mounting can be completed without a professional tool, complex operation of a traditional flange connecting mode is avoided, and the mounting difficulty and time cost are remarkably reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to transformer technical field, concretely is a kind of transformer of convenient installation insulating sleeve. BACKGROUND

[0002] The insulating sleeve of transformer is the important component in transformer, mainly for ensuring the safe operation of electrical equipment, and the main role of insulating sleeve is to provide electrical insulation, prevent short circuit or discharge between high-voltage conductor and transformer shell or other grounded parts, also provide mechanical support for the lead or winding inside transformer, ensure its stable connection, the outside of insulating sleeve is usually designed as umbrella skirt, to increase the creepage distance, prevent flashover in humid or contaminated environment.

[0003] Insulating sleeve includes bottom terminal, mounting seat, umbrella skirt disc, top terminal, is installed at the top of transformer, usually the terminal of insulating sleeve bottom is inserted into the mounting hole in the top of transformer, then it is connected with the top of transformer using flange butt joint, and the installation of flange connection needs higher precision, professional tools and technical personnel are needed in installation process, increase installation cost and time, when maintaining, disassembly and reinstallation flange connection are more complex, can affect the normal operation of transformer, and the size requirement of flange is higher, once there is size error, it can cause installation failure. UTILITY MODEL CONTENTS

[0004] To solve the technical problems in the above background art, the utility model provides a kind of transformer of convenient installation insulating sleeve.

[0005] The utility model technical scheme is as follows:

[0006] A kind of transformer of convenient installation insulating sleeve, including transformer main body, and multiple insulating sleeves are installed in the top of transformer main body, and the top of transformer main body is equipped with top plate;

[0007] Multiple mounting holes are spaced apart on the top plate, and the bottom terminal of insulating sleeve is inserted into mounting hole, multiple bottom plates are installed in the circumferential array of mounting hole, and support rod is installed on bottom plate, and support rod is vertically arranged;

[0008] Limiting frame is installed on the outer end surface of support rod, and limiting frame can be adjusted height along the length direction of support rod, and limiting frame bottom is extruded and fixed with mounting seat by fastener.

[0009] To facilitate the adjustment of limiting frame, the outer end surface of support rod is provided with screw thread, and the fastener is fastening nut, and limiting frame is below fastening nut.

[0010] In order to improve the adaptation of the limiting frame and the mounting seat, and ensure the fixing effect of the mounting seat, the side of the limiting frame in contact with the mounting seat is provided with an arc shape.

[0011] In order to improve the fixing effect of the mounting seat, each mounting hole is circumferentially arranged with at least three bottom plates, and the three bottom plates are uniformly distributed.

[0012] In order to facilitate the adjustment of the distance between the plurality of limiting frames, so as to adapt to the fixing of the mounting seat of the insulating sleeve of different sizes, a plurality of first sliding grooves are arranged at the positions of the circumferential bottom plates of the mounting hole, and the extension direction of the first sliding groove is consistent with the radial direction of the mounting hole, and the bottom plate and the first sliding groove are slidingly connected.

[0013] In order to facilitate the fixing of the bottom plate at different positions, a plurality of first threaded holes are arranged along the length direction of the first sliding groove, and the supporting rod penetrates the bottom plate and any first threaded hole.

[0014] In order to be able to pre-position the insulating sleeve during installation, improve the installation efficiency, a plurality of limiting blocks are mounted on the side surface, and a positioning block is mounted at the corresponding position on the top plate, and a positioning groove matched with the positioning block is arranged on the side close to the positioning block.

[0015] In order to facilitate the adjustment of the position of the positioning block, so as to adapt to the pre-positioning of the mounting seat of different diameters, a second sliding groove is arranged on the top plate along the radial direction of the mounting hole at the position corresponding to the positioning block, and the positioning block and the second sliding groove are slidingly connected.

[0016] A plurality of second threaded holes are arranged along the length direction of the second sliding groove, and the positioning block and the second threaded hole are fixed by a fastening bolt.

[0017] In order to facilitate the installation of the positioning block and the limiting frame, the positioning block is provided with two, and is arranged in space with the bottom plate.

[0018] The beneficial effects of the utility model lie in: the utility model discloses a kind of transformer for facilitating installation of insulating sleeve, top plate is set in transformer main body top, and mounting hole is set on top plate, the bottom wiring end of insulating sleeve can be directly inserted into mounting hole, the cooperation design of supporting rod and limiting frame makes it possible to extrude and fix insulating sleeve, convenient operation, without professional tool can complete installation, avoid the complex operation of traditional flange connection mode, significantly reduce installation difficulty and time cost;

[0019] The bottom plate and the supporting rod structure of the circumferential array of the mounting hole provide uniform support force for the insulating sleeve, ensure that the sleeve is installed stably, avoid tilting or loosening due to uneven stress, the limiting frame and the mounting seat are extruded and fixed by fasteners, further enhance the stability of the insulating sleeve, prevent displacement or vibration during operation.

[0020] The sliding connection design of the bottom plate and the first sliding groove makes the position of the supporting rod adjustable according to the size of the insulating sleeve, and is suitable for fixing insulating sleeves of different sizes. The fixing mode of the limiting frame and the mounting seat adopts detachable fasteners, which facilitates the later maintenance or replacement of the insulating sleeve, and reduces the maintenance cost and time. BRIEF DESCRIPTION OF DRAWINGS

[0021] The solutions and advantages of the present application will become clear to those of ordinary skill in the art from a reading of the following detailed description of the preferred embodiments. The drawings are for purposes of illustrating the preferred embodiments only, and are not to be construed as limiting the present application.

[0022] In the drawings:

[0023] Figure 1 is a front view of the present application;

[0024] Figure 2 is an enlarged view of A;

[0025] Figure 3 is a B-directional sectional view;

[0026] Figure 4 is Figure 3 is a partial structural view;

[0027] Figure 5 is a top view without an insulating sleeve;

[0028] The components represented by the reference numerals in the drawings are:

[0029] 1, transformer body; 2, insulating sleeve; 21, bottom terminal; 22, mounting seat; 23, umbrella skirt disc; 24, top terminal; 3, top plate; 4, mounting hole; 5, bottom plate; 6, supporting rod; 7, limiting frame; 8, fastener; 9, first sliding groove; 10, first threaded hole; 11, limiting block; 12, positioning block; 13, positioning groove; 14, second sliding groove; 15, second threaded hole; 16, fastening bolt. DETAILED DESCRIPTION

[0030] Exemplary embodiments of the present disclosure will be described in greater detail below with reference to the accompanying drawings.

[0031] Embodiments

[0032] As mentioned in the background, the existing insulating sleeve 2 is flange connected during the installation of the transformer, although it has a certain convenience, but in the actual installation process, the inventors find that the installation precision requirement is high, that is, the flange needs to be strictly aligned, which consumes more manpower and material resources, and is difficult to disassemble, and the maintenance cost is high in the later period, therefore, the inventors improve the existing installation and design a new type of insulating sleeve 2 installation method, which will be described in detail below in combination with the drawings.

[0033] The embodiment provides a transformer with a convenient installation of an insulating sleeve, referring to Figure 1 , the insulating sleeve 2 is of the existing structure, including a bottom terminal 21, a mounting seat 22, an umbrella skirt disc 23, and a top terminal 24, which are not described in detail, and the top of the transformer body 1 is provided with a top plate 3, in combination with Figure 5 , a plurality of mounting holes 4 are arranged on the top plate 3 at intervals, which are used for mounting the bottom terminal 21 of the insulating sleeve 2. A plurality of bottom plates 5 are circumferentially arranged in each mounting hole 4, in this scheme, at least three bottom plates 5 are circumferentially arranged in each mounting hole 4, and the three bottom plates 5 are uniformly distributed, and the bottom plates 5 are uniformly distributed, so as to ensure that the stress of the insulating sleeve 2 during installation is uniform.

[0034] In the embodiment, in combination with Figure 2 , the bottom plate 5 is provided with a support rod 6, which is vertically arranged and used for supporting and fixing the insulating sleeve 2, and the specific mode is that a limiting frame 7 is arranged on the outer end surface of the support rod 6, the limiting frame 7 can adjust the height along the length direction of the support rod 6, that is, the distance between the limiting frame 7 and the mounting seat 22 can be adjusted, so as to ensure that the mounting seat 22 of different heights can be supported. The bottom of the limiting frame 7 is fixedly extruded with the mounting seat 22 of the insulating sleeve 2 through a fastener 8, so as to ensure that the insulating sleeve 2 is stably installed. Specifically, a thread is arranged on the outer end surface of the support rod 6, the fastener 8 is a fastening nut, and the limiting frame 7 is located below the fastening nut. By rotating the fastening nut, the limiting frame 7 can be pushed downward to move towards the mounting seat 22, until the limiting frame 7 is extruded and fixed with the mounting seat 22, and the end surface of the limiting frame 7 in contact with the mounting seat 22 is arranged in an arc shape, which can improve the fitting degree with the mounting seat 22, and an elastic pad is arranged on the arc-shaped end surface, which can be used for protecting the mounting seat 22.

[0035] On the basis of the above structure, in combination with Figure 3 and Figure 4The first sliding groove 9 is in sliding connection with the bottom plate 5, that is, can move along the direction close to or away from the mounting hole 4, so that the position of the supporting rod 6 can be adjusted according to the size of the insulating sleeve 2, and then drives the plurality of limiting racks 7 to adjust the distance between them, which facilitates the fixing of the limiting rack 7 to the mounting seat 22 of different diameters.

[0036] In addition, a plurality of first threaded holes 10 are arranged along the length direction of the first sliding groove 9, and the supporting rod 6 penetrates the bottom plate 5 and is installed with any first threaded hole 10, so that the bottom plate 5 can be fixed after sliding along the first sliding groove 9, and the stability of the limiting rack 7 accompanying the supporting rod 6 is enhanced.

[0037] In the embodiment, a plurality of limiting blocks 11 are installed on the side surface of the bottom plate 5, and a positioning block 12 is installed on the top plate 3 in a corresponding position, and two are arranged in the scheme, and are arranged in a spaced manner with the bottom plate 5. The positioning groove 13 matched with the limiting block 11 is arranged on the side of the positioning block 12 close to the limiting block 11, so that the position adjustment of the bottom plate 5 and the supporting rod 6 is more accurate. When the insulating sleeve 2 is installed, the limiting block 11 on the outside of the mounting seat 22 is one-to-one corresponding to the positioning block 12, and enters into the positioning groove 13, so that the pre-positioning of the insulating sleeve 2 is completed, the installation efficiency is improved, and the fine adjustment of the position of the insulating sleeve 2 is avoided. A second sliding groove 14 is arranged on the top plate 3 in a corresponding position of the positioning block 12 along the radial direction of the mounting hole 4, and the positioning block 12 is in sliding connection with the second sliding groove 14. A plurality of second threaded holes 15 are arranged along the length direction of the second sliding groove 14, and the positioning block 12 is fixed by penetrating any second threaded hole 15 through the fastening bolt 16, so that the fixing of the positioning block 12 is ensured.

[0038] In the embodiment, the bottom terminal 21 of the insulating sleeve 2 is inserted into the mounting hole 4 on the top plate 3, and in the insertion process, the plurality of limiting blocks 11 are inserted into the positioning groove 13 for preliminary positioning. According to the size of the insulating sleeve 2, the bottom plate 5 is slid to drive the limiting rack 7 to align with the mounting seat 22 of the insulating sleeve 2, the height of the limiting rack 7 is adjusted by rotating the fastening nut, so that the limiting rack 7 is in contact with and pressed with the mounting seat 22 of the insulating sleeve 2, and the installation of the insulating sleeve 2 is stable.

[0039] Moreover, the inventors conducted installation tests, and after the transformer with the convenient installation insulating sleeve 2 of the application was adopted, the installation time of the insulating sleeve 2 was shortened by 40%, and no professional tools or multiple cooperation was needed in the installation process, and only one or two operators can complete the installation. The adjustable design of the supporting rod 6 and the limiting frame 7 makes the position adjustment of the insulating sleeve 2 more flexible, and adapts to the installation requirements of different specifications of the sleeve. The quick installation, accurate positioning and convenient maintenance of the insulating sleeve 2 are realized, the installation efficiency is significantly improved, the installation and maintenance costs are reduced, and the stability and reliability of the insulating sleeve 2 are enhanced.

Claims

1. A transformer with insulation bushings which are easily installed, comprising a transformer body (1) and a plurality of insulation bushings (2) installed on the top of the transformer body (1), characterized in that, The transformer body (1) top is equipped with top plate (3); The top plate (4) is spaced apart and provided with a plurality of mounting holes (4), and the bottom terminal (21) of the insulating sleeve (2) is inserted into the mounting hole (4), a plurality of bottom plates (5) are circumferentially arranged on the mounting hole (4), and a support rod (6) is arranged on the bottom plate (5), and the support rod (6) is vertically arranged; The outer end surface of the support rod (6) is provided with a limiting frame (7), and the limiting frame (7) can adjust the height along the length direction of the support rod (6), and the limiting frame (7) is fixed by the fastener (8) and the mounting seat (22) of the insulating sleeve (2).

2. The transformer with a readily installed insulation bushing according to claim 1, characterized in that, The outer end surface of the support rod (6) is provided with a threaded, and the fastener (8) is a fastening nut, and the limiting frame (7) is located below the fastening nut.

3. The transformer with a readily installed insulation bushing according to claim 2, characterized in that, The side of the limiting frame (7) in contact with the mounting seat (22) is provided with an arc shape.

4. The transformer with a readily installed insulation bushing according to claim 1, characterized in that, Each mounting hole (4) circumferentially has at least three bottom plates (5), and the three bottom plates (5) are uniformly distributed.

5. The transformer with a readily installed insulation bushing according to claim 2, characterized in that, The mounting hole (4) circumferentially corresponds to the position of the bottom plate (5) and is provided with a plurality of first sliding grooves (9), and the extension direction of the first sliding groove (9) is consistent with the radial direction of the mounting hole (4), and the bottom plate (5) is slidably connected with the first sliding groove (9).

6. The transformer with a readily installed insulation bushing according to claim 5, characterized in that, A plurality of first threaded holes (10) are arranged along the length direction of the first sliding groove (9), and the support rod (6) penetrates the bottom plate (5) and is arranged in any first threaded hole (10).

7. The transformer with a readily installed insulation bushing according to claim 5, characterized in that, The side of the bottom plate (5) is provided with a plurality of limiting blocks (11), and the top plate (3) is provided with a positioning block (12) at the corresponding position, and the positioning block (12) is provided with a positioning groove (13) matched with the positioning block (12) on the side close to the positioning block (12).

8. The transformer with a readily installed insulation bushing according to claim 7, characterized in that The top plate (3) is provided with a second sliding groove (14) at the position corresponding to the positioning block (12) along the radial direction of the mounting hole (4), and the positioning block (12) is slidably connected with the second sliding groove (14). A plurality of second threaded holes (15) are arranged along the length direction of the second sliding groove (14), and the positioning block (12) is fixed by the fastening bolt (16) penetrating the positioning block (12) and cooperating with the second threaded hole (15).

9. The transformer with a readily installed insulation bushing according to claim 8, characterized in that The positioning block (12) is provided with two, and is arranged between the bottom plate (5).

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