Pole-mounted transformer

Abstract

The utility model provides a pole-mounted transformer, which comprises a transformer body, the top surface of the transformer body is provided with a fixedly connected high-voltage wiring terminal, and the lower end of the front side wall of the transformer body is provided with a fixedly connected low-voltage wire outlet box. A low-voltage wiring terminal fixedly connected with the transformer body is arranged in the low-voltage wire outlet box; the low-voltage wiring terminal is arranged at the lower end of the side wall of the front side of the transformer body, and compared with a layout that high-voltage wiring terminals and low-voltage wiring terminals in a traditional transformer are located at the top, the length of a cable needed by low-voltage outgoing can be saved, so that the cost of installation materials is reduced, meanwhile, wiring operation is convenient, and the cost is reduced. The whole low-voltage wire outlet box adopts a flexibly detachable splicing structure and is fixed through screws, so that the structural stability of the low-voltage wire outlet box is ensured, the assembly of the low-voltage wire outlet box is simpler, more convenient and faster, and subsequent maintenance and replacement are facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of power equipment especially a pole transformer. BACKGROUND

[0002] As an important equipment in the power system, the pole transformer is widely used in urban and rural power grids for realizing the distribution and transmission of electric energy. The traditional pole transformer usually adopts an oil-immersed transformer with a conventional structure, and its design feature is that the high-voltage and low-voltage connection terminals are both located at the top of the transformer. Although this design meets the basic power transmission requirements to some extent, it still has some problems. The low-voltage outgoing line of the traditional pole transformer needs to be connected to the lower rack box through a long cable, which not only increases the material cost but also reduces the convenience and efficiency of wiring to some extent.

[0003] Based on the above situation, in the prior art, a patent with the application number CN201520118331.5 discloses a new three-dimensional wound core barrel type pole transformer, which comprises a shell, a box cover arranged at the top of the shell, a high-voltage connection terminal arranged on the box cover, a low-voltage connection terminal arranged on the upper end side of the shell, a transformer bottom cover arranged at the bottom of the shell, the shell is a barrel type shell, an upper mounting lug and a lower mounting lug are arranged on the side wall of the barrel type shell, the upper mounting lug and the lower mounting lug are arranged on the same side wall of the barrel type shell and vertically in a straight line, a left lug and a right lug are symmetrically arranged on the side wall of the barrel type shell, the left lug and the right lug are arranged on the same plane ring with the upper mounting lug, and the left lug and the right lug are symmetrically arranged on both sides of the upper mounting lug, a sealing band is arranged at the connection between the box cover and the barrel type shell. The above-mentioned pole transformer has a simple structure, reduces the use of mounting columns, saves the installation cost of the transformer, is safe, stable and reliable, and improves the safety performance of installation and use.

[0004] However, although the above-mentioned barrel type pole transformer has been improved in design and function, there are still some potential problems, especially the low-voltage connection terminal is arranged on the side of the shell, which makes the low-voltage connection terminal easy to be collided during the transportation or installation of the pole transformer, thereby possibly causing damage and affecting the normal use of the transformer. UTILITY MODEL CONTENTS

[0005] In view of the technical defects in the background art, the utility model provides a pole transformer to further solve the above-mentioned technical problems and meet the actual needs. The specific technical scheme is as follows:

[0006] A pole-mounted transformer, comprising a transformer body, a high-voltage terminal fixedly connected to the top surface of the transformer body, a low-voltage outlet box fixedly connected to the lower end of the front side wall of the transformer body, a low-voltage terminal fixedly connected to the inside of the low-voltage outlet box, the low-voltage outlet box comprising a mounting plate, a top plate, a side plate, a bottom plate, a sealing plate and a mounting square column, the inside of the mounting plate being provided with a mounting frame for the low-voltage terminal to pass through when mounted, the top plate, the side plate, the bottom plate and the mounting square column being enclosed around the edges of the mounting frame, the top plate being arranged at the top edge position of the mounting frame and fixedly connected to the mounting plate, the mounting square column being symmetrically arranged at the left and right two corner positions of the bottom of the mounting frame and fixedly connected to the mounting plate, the side plate being correspondingly arranged between the top plate and the mounting square column, the side plate being spliced with the top plate, the mounting square column and the mounting plate respectively, the bottom plate being spliced with the mounting square column and the mounting plate respectively, and the sealing plate being fixedly connected to the top plate and the mounting square column by a fixing member.

[0007] Further, the top surface of the transformer body is further provided with a lifting lug and an oil level gauge fixedly connected thereto, and the bottom surface of the transformer body is provided with a channel steel support fixedly connected thereto, which is arranged in parallel on the bottom surface of the transformer body, and the low-voltage outlet box is arranged between the channel steel supports.

[0008] Further, the side wall surface of the rear side of the side plate is provided with a first clamping strip, the top surface and the bottom surface of the side plate are symmetrically provided with a second clamping strip, the lower surface of the top plate and the upper surface of the mounting square column are provided with a second clamping groove capable of being spliced with the second clamping strip, and the mounting plate is provided with a first clamping groove capable of being spliced with the first clamping strip at the edge positions of the left and right sides of the mounting frame.

[0009] Further, the side walls of the left and right sides of the bottom plate are symmetrically provided with a third clamping strip, the side wall surface of the rear side of the bottom plate is provided with a fourth clamping strip, the side wall surfaces opposite to each other between the two mounting square columns are provided with a third clamping groove capable of being spliced with the third clamping strip, and the mounting plate is provided with a fourth clamping groove capable of being spliced with the fourth clamping strip at the edge position of the lower end of the mounting frame.

[0010] Further, the four corner positions of the front side wall surface of the sealing plate are respectively provided with a second threaded hole penetrating in the thickness direction of the sealing plate, the left and right end positions of the front side wall of the top plate are provided with a first threaded hole corresponding to the second threaded hole, the second threaded hole and the first threaded hole are coaxially arranged, the front end side wall surface of the mounting square column is provided with a third threaded hole corresponding to the second threaded hole, and the second threaded hole and the third threaded hole are coaxially arranged.

[0011] Further, the four corner positions of the front side wall surface of the sealing plate are respectively provided with a second screw capable of cooperating with the first threaded hole, the second threaded hole and the third threaded hole.

[0012] Further, four corners of the side wall surface of the front side of the mounting plate are respectively provided with first screws, and the mounting plate is mounted on the transformer body through the first screws.

[0013] The utility model has the advantages of:

[0014] The utility model discloses a pole-mounted transformer, which is structurally characterized in that a low-voltage wiring terminal is arranged at a lower end position of a front side wall of a transformer body. Compared with a conventional transformer in which high-voltage and low-voltage wiring terminals are both arranged at the top, the utility model can save the cable length required for low-voltage outgoing lines, thereby reducing the installation material cost. Meanwhile, the utility model is convenient for wiring operation, the low-voltage outgoing line box can protect the low-voltage wiring terminal inside, the low-voltage outgoing line box as a whole adopts a splicing structure that can be flexibly disassembled and fixed through screws, thereby ensuring the structural stability of the low-voltage outgoing line box and making the assembly of the low-voltage outgoing line box more convenient and fast. In addition, the utility model is convenient for subsequent maintenance and replacement. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a front structure schematic view of the utility model.

[0016] Figure 2 It is a side structure schematic view of the utility model.

[0017] Figure 3 It is a low-voltage outgoing line box three-dimensional structure schematic view of the utility model.

[0018] Figure 4 It is a structure schematic view of a mounting plate, a top plate and a mounting square column of the utility model.

[0019] Figure 5 It is a structure schematic view of a side plate, a bottom plate and a sealing plate of the utility model.

[0020] Reference signs: transformer body 1, high-voltage wiring terminal 11, lifting lug 12, oil level gauge 13, low-voltage wiring terminal 14, channel steel support 15, low-voltage outgoing line box 2, mounting plate 21, mounting frame 211, first screw 212, first clamping groove 213, fourth clamping groove 214, top plate 22, second clamping groove 221, first threaded hole 222; side plate 23, first clamping strip 231, second clamping strip 232, bottom plate 24, third clamping strip 241, fourth clamping strip 242, sealing plate 25, second threaded hole 251, second screw 252, mounting square column 26, third clamping groove 261, third threaded hole 263. DETAILED DESCRIPTION

[0021] The embodiments of the present application are described below in conjunction with the accompanying drawings and related embodiments, and the embodiments of the present application are not limited to the following examples, and the present application relates to related necessary components in the technical field, which should be regarded as known technology in the technical field and can be known and mastered by the skilled in the art.

[0022] As shown in Figures 1 to 5 The utility model provides a technical scheme, a pole transformer, including transformer body 1, transformer body 1 top is provided with fixed connection high voltage terminal 11, the lower end of transformer body 1 front side wall is equipped with fixed connection low voltage outlet box 2, low voltage outlet box 2 inside is equipped with with transformer body 1 fixed connection low voltage terminal 14, low voltage outlet box 2 includes mounting plate 21, top plate 22, side plate 23, bottom plate 24, sealing plate 25 and installation square column 26, mounting plate 21 inside is equipped with for low voltage terminal 14 when installing and passes through mounting frame 211, top plate 22, side plate 23, bottom plate 24 and installation square column 26 are enclosed in mounting frame 211 four around edges, top plate 22 is set in mounting frame 211 top edge position and is connected with mounting plate 21, installation square column 26 is respectively arranged in the left and right two corner positions of mounting frame 211 bottom and is connected with mounting plate 21, side plate 23 is correspondingly set between top plate 22 and installation square column 26, side plate 23 is respectively with top plate 22, installation square column 26 and mounting plate 21 splicing, bottom plate 24 is respectively with installation square column 26 and mounting plate 21 splicing, sealing plate 25 is fixedly connected with top plate 22 and installation square column 26 through fixing piece respectively.

[0023] In the transformer body 1 structure of the utility model, the transformer body 1 top surface is further provided with fixed connection lifting lug 12, oil level gauge 13, the transformer body 1 bottom surface is provided with fixed connection channel steel support 15, the channel steel support 15 is arranged in parallel on the bottom surface of the transformer body 1, and the low voltage outlet box 2 is arranged between the channel steel supports 15.

[0024] The utility model discloses a pole transformer on structure, install low voltage terminal 14 at the front side wall lower end position of transformer body 1, compared with the layout of wiring terminal in traditional transformer all is located at the top, can save the cable length required for low voltage outgoing line, thereby reduced installation material cost, simultaneously, facilitate wiring operation, low voltage terminal 14 is directly arranged inside low voltage outgoing line box 2, low voltage outgoing line box 2 is by installing plate 21, top plate 22, side plate 23, bottom plate 24, sealing plate 25 and installing square column 26 etc. multiple components are formed, and through the cooperation of clamping strip and clamping groove splicing is carried out, and fixed connection is carried out through screw, this thereby makes the assembly of low voltage outgoing line box 2 more simple and fast, by setting low voltage terminal 14 inside low voltage outgoing line box 2, and using sealing plate 25 to close, effectively avoid the risk of collision and damage of low voltage terminal 14 during handling or installation process, improve the security of transformer, simultaneously, the modular design of low voltage outgoing line box 2 also makes when necessary can conveniently open sealing plate 25 and check or repair.

[0025] The lifting lug 12 arranged on the top surface of the transformer body 1 facilitates hoisting and carrying of the transformer, and the oil level meter 13 is used for monitoring the change of the oil level in the transformer, so as to ensure normal operation of the transformer, and the channel steel support 15 arranged on the bottom surface not only provides stable support for the transformer, but also facilitates fixed connection with the mounting structure such as a rack, so that the installation of the transformer is more simple and fast, and the stability of the transformer is improved.

[0026] In order to ensure the sealing property of the low voltage outgoing line box 2 as a whole, according to actual sealing requirements, sealing glue can be used for sealing at the joint of the low voltage outgoing line box 2, and at the gap between the low voltage outgoing line box 2 and the transformer body 1, and meanwhile, the connection between the clamping strip and the clamping groove formed between the installing plate 21, the top plate 22, the side plate 23, the bottom plate 24, the sealing plate 25 and the installing square column 26 in the low voltage outgoing line box 2 can be further sealed by installing a sealing rubber strip, so as to further increase the sealing property between the clamping strip and the clamping groove.

[0027] As one of the preferred embodiments of the utility model, as shown in the figure, Figures 3 to 5 The lower surface of the top plate 22, the upper surface of the installing square column 26 and the left and right sides of the installing frame 211 are provided with the first clamping groove 213 capable of being spliced with the first clamping strip 231.

[0028] The side plate 23 is assembled and spliced with the top plate 22, the mounting square column 26 and the mounting plate 21 through the side plate 23, so that the side surface of the low-voltage outlet box 2 is formed, the rear side wall surface of the side plate 23 is provided with a first clamping strip 231, so that the side plate 23 can be accurately assembled and spliced with the first clamping groove 213 on the mounting plate 21 during installation, the cooperation between the first clamping strip 231 and the first clamping groove 213 not only provides the lateral positioning of the side plate 23 on the mounting plate 21, but also increases the connecting strength between the side plate 23 and the mounting plate 21 through clamping, and the top surface and the bottom surface of the side plate 23 are symmetrically provided with a second clamping strip 232, the second clamping strip 232 is cooperated and spliced with the second clamping groove 221 on the lower surface of the top plate 22 and the second clamping groove 221 on the upper surface of the mounting square column 26, so that the accurate positioning of the side plate 23 in the vertical direction is ensured, and the connecting stability between the side plate 23 and the top plate 22 and the mounting square column 26 is further improved.

[0029] During installation, the second clamping strip 232 is clamped into the second clamping groove 221 on the top plate 22 and the mounting square column 26 respectively for preliminary positioning, with the further pushing of the side plate 23, the first clamping strip 231 of the side plate 23 is clamped into the first clamping groove 213 on the mounting plate 21 and spliced, so that the installation of the side plate 23 on the structure of the low-voltage outlet box 2 is realized.

[0030] As one of the preferred embodiments of the utility model, as shown in the drawings, Figures 3 to 5 The left and right side walls of the bottom plate 24 are symmetrically provided with third clamping strips 241, the rear side wall surface of the bottom plate 24 is provided with a fourth clamping strip 242, the left and right opposite side wall surfaces between the two mounting square columns 26 are provided with third clamping grooves 261 capable of being cooperated and spliced with the third clamping strips 241, and the edge position of the lower end of the mounting frame 211 of the mounting plate 21 is provided with a fourth clamping groove 214 capable of being cooperated and spliced with the fourth clamping strip 242.

[0031] The bottom plate 24 is assembled and spliced with the mounting square column 26 and the mounting plate 21, so that the bottom surface of the low-voltage outlet box 2 is formed, the left and right side walls of the bottom plate 24 are symmetrically provided with third clamping strips 241, the bottom plate 24 can be accurately aligned with the third clamping grooves 261 on the left and right opposite side wall surfaces between the two mounting square columns 26 during installation, the cooperation between the third clamping strips 241 and the third clamping grooves 261 not only provides the lateral positioning of the bottom plate 24 on the mounting square column 26, but also increases the connecting strength between the bottom plate 24 and the mounting square column 26 through clamping, the rear side wall surface of the bottom plate 24 is provided with a fourth clamping strip 242, and is cooperated with the fourth clamping groove 214 at the edge position of the lower end of the mounting frame 211 of the mounting plate 21, so that the positioning of the bottom plate 24 on the mounting plate 21 is ensured, and the connecting stability between the bottom plate 24 and the mounting plate 21 is further improved.

[0032] During the installation process, the bottom plate 24 is firstly positioned by the third clamping strips 241 on the left and right sides thereof and the third clamping grooves 261 between the two installation square columns 26, and with the further pushing of the bottom plate 24, the fourth clamping strip 242 at the rear side thereof gradually approaches and is finally clamped into the fourth clamping groove 214 on the installation plate 21, thereby completing the installation of the bottom plate 24 on the installation square column 26 and the installation plate 21.

[0033] As one of the preferred embodiments of the utility model, as shown in Figures 3 to 5 The second threaded holes 251 and the first threaded holes 222 are coaxially arranged, the front end side wall surface of the installation square column 26 is provided with the third threaded holes 263 corresponding to the second threaded holes 251, and the second threaded holes 251 and the third threaded holes 263 are coaxially arranged.

[0034] In the low-voltage outlet box 2 structure of the utility model, the four corner positions of the side wall surface of the front side of the sealing plate 25 are respectively provided with the second screws 252 matched with the first threaded holes 222, the second threaded holes 251 and the third threaded holes 263.

[0035] The sealing plate 25 is aligned and connected with the first threaded holes 222 on the top plate 22 and the third threaded holes 263 on the installation square column 26 through the second threaded holes 251 arranged at the four corner positions thereof, and the second screws 252 are installed in the threaded holes, so that the sealing plate 25 is firmly installed on the low-voltage outlet box 2.

[0036] The top plate 22 is the top structure of the low-voltage outlet box 2, the left and right end positions of the front side wall thereof are provided with the first threaded holes 222 corresponding to the second threaded holes 251 on the sealing plate 25, and the two first threaded holes 222 and the two second threaded holes 251 at the upper end of the sealing plate 25 are coaxially arranged, so that when the sealing plate 25 is placed on the top plate 22, the two second threaded holes 251 at the upper end of the sealing plate 25 are aligned with the first threaded holes 222 on the top plate 22, and at this time, the second screws 252 are installed in the aligned threaded holes, so that the sealing plate 25 and the top plate 22 are firmly connected.

[0037] Similarly, the mounting square column 26 is installed as the support structure of the low-voltage outlet box 2, the front end side wall surface of which is provided with third threaded holes 263 corresponding to the second threaded holes 251 on the sealing plate 25, and the two third threaded holes 263 are coaxially arranged with the two second threaded holes 251 at the lower end of the sealing plate 25, so that when the sealing plate 25 is placed on the mounting square column 26, the two second threaded holes 251 at the lower end of the sealing plate 25 are aligned with the third threaded holes 263 on the mounting square column 26, and at this time, the second screws 252 are installed in the two aligned threaded holes, so that the sealing plate 25 and the mounting square column 26 are firmly connected.

[0038] As one of the preferred embodiments of the utility model, as shown in Figures 1 to 3 The mounting plate 21 is installed on the lower end position of the front side wall of the transformer body 1 through the first screws 212, thereby realizing the overall installation of the low-voltage outlet box 2.

[0039] The mounting plate 21 is installed on the lower end position of the front side wall of the transformer body 1 through the first screws 212, thereby realizing the overall installation of the low-voltage outlet box 2.

[0040] The utility model carries out the wiring operation of low-voltage wiring terminal 14 and cable line in low-voltage outlet box 2, first, use screwdriver and other tools to remove the second screw 252 on the four corner positions of the side wall surface of the front side of sealing plate 25, after removing the screw, sealing plate 25 is taken off from low-voltage outlet box 2, so as to expose low-voltage wiring terminal 14 and the wiring area around, then, bottom plate 24 needs to be removed, because bottom plate 24 and mounting square column 26 and mounting plate 21 are spliced together through the way of clamping strip and clamping groove, so bottom plate 24 can be pulled, so that bottom plate 24 is separated from mounting square column 26 and mounting plate 21.

[0041] After the cover plate 25 and the bottom plate 24 are removed, a suitable cable is selected, and the insulating layer at the end of the cable is stripped using wire strippers, and the stripped end of the cable is connected to the low-voltage terminal 14. After the connection is completed, the cover plate 25 can be reinstalled on the low-voltage outlet box 2, and the cover plate 25 is aligned with the corresponding positions on the top plate 22 and the mounting square column 26, and the second screw 252 is tightened and fixed using a screwdriver or other tool.

[0042] The above only describes the preferred embodiments of the present application, and it should be noted that, for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should also be considered within the scope of protection of the present application.

Claims

1. A pole-mounted transformer comprising a transformer body (1), characterized in that The transformer body (1) top surface is provided with fixed connection high voltage terminal (11), the lower end of transformer body (1) front side wall is equipped with fixed connection low voltage outlet box (2), the low voltage outlet box (2) inside is equipped with with transformer body (1) fixed connection low voltage terminal (14), the low voltage outlet box (2) includes mounting plate (21), top plate (22), side plate (23), bottom plate (24), sealing plate (25) and mounting square column (26), the mounting plate (21) inside is equipped with for low voltage terminal (14) when installing passes through mounting frame (211), the top plate (22), side plate (23), bottom plate (24) and mounting square column (26) are enclosed in mounting frame (211) four around edges, the top plate (22) is set in mounting frame (211) top edge position and is fixedly connected with mounting plate (21), the mounting square column (26) is respectively symmetrically set in the left and right two corner positions of mounting frame (211) bottom and is fixedly connected with mounting plate (21), the side plate (23) is correspondingly set between top plate (22) and mounting square column (26), the side plate (23) is respectively spliced with top plate (22), mounting square column (26) and mounting plate (21), the bottom plate (24) is respectively spliced with mounting square column (26) and mounting plate (21), the sealing plate (25) is fixedly connected with top plate (22) and mounting square column (26) through fixing piece.

2. A pole-mounted transformer according to claim 1, characterised in that The transformer body (1) top surface is also provided with fixed connection lifting lug (12), oil level gauge (13), the bottom surface of transformer body (1) is provided with fixed connection channel steel support (15), the channel steel support (15) is arranged in parallel on the bottom surface of transformer body (1), and the low voltage outlet box (2) is arranged between the channel steel supports (15).

3. A pole-mounted transformer according to claim 1, wherein The side wall surface of the rear side of the side plate (23) is provided with a first clamping strip (231), the top surface and the bottom surface of the side plate (23) are symmetrically provided with a second clamping strip (232), the left and right sides of the lower surface of the top plate (22) and the upper surface of the mounting square column (26) are provided with a second clamping groove (221) capable of being spliced with the second clamping strip (232), and the edges of the left and right sides of the mounting frame (211) of the mounting plate (21) are provided with a first clamping groove (213) capable of being spliced with the first clamping strip (231).

4. A pole-mounted transformer according to claim 1, wherein The side walls of the left and right sides of the bottom plate (24) are symmetrically provided with a third clamping strip (241), the side wall surface of the rear side of the bottom plate (24) is provided with a fourth clamping strip (242), the side wall surfaces opposite to each other between the two mounting square columns (26) are provided with a third clamping groove (261) capable of being spliced with the third clamping strip (241), and the edge position of the lower end of the mounting frame (211) of the mounting plate (21) is provided with a fourth clamping groove (214) capable of being spliced with the fourth clamping strip (242).

5. A pole-mounted transformer according to claim 1, wherein The four corners of the side wall surface of the front side of the sealing plate (25) are respectively provided with a second threaded hole (251) penetrating along the thickness direction of the sealing plate (25), the left and right ends of the side wall of the front side of the top plate (22) are provided with a first threaded hole (222) corresponding to the second threaded hole (251), the second threaded hole (251) and the first threaded hole (222) are coaxially arranged, the front end side wall surface of the mounting square column (26) is provided with a third threaded hole (263) corresponding to the second threaded hole (251), and the second threaded hole (251) and the third threaded hole (263) are coaxially arranged.

6. A pole-mounted transformer according to claim 5, characterised in that The four corners of the side wall surface of the front side of the sealing plate (25) are respectively provided with a second threaded hole (251) penetrating along the thickness direction of the sealing plate (25), the left and right ends of the side wall of the front side of the top plate (22) are provided with a first threaded hole (222) corresponding to the second threaded hole (251), the second threaded hole (251) and the first threaded hole (222) are coaxially arranged, the front end side wall surface of the mounting square column (26) is provided with a third threaded hole (263) corresponding to the second threaded hole (251), and the second threaded hole (251) and the third threaded hole (263) are coaxially arranged.

7. A pole-mounted transformer according to claim 1, wherein The four corners of the side wall surface of the front side of the sealing plate (25) are respectively provided with a second threaded hole (251) penetrating along the thickness direction of the sealing plate (25), the left and right ends of the side wall of the front side of the top plate (22) are provided with a first threaded hole (222) corresponding to the second threaded hole (251), the second threaded hole (251) and the first threaded hole (222) are coaxially arranged, the front end side wall surface of the mounting square column (26) is provided with a third threaded hole (263) corresponding to the second threaded hole (251), and the second threaded hole (251) and the third threaded hole (263) are coaxially arranged.

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