Transformer oil tank

Abstract

The utility model relates to the technical field of transformers, and particularly discloses a transformer oil tank which comprises a tank body used for placing transformer oil and an iron core and a winding of a transformer, and a notch is formed in the bottom of the side wall of one side of the tank body; the sliding frame is in sliding connection with the inner wall of the box body, one end of the sliding frame can penetrate out of the notch, and a filter screen capable of filtering transformer oil is arranged in the sliding frame; the sealing seat is arranged on the side wall of the tank body and covers the notch, the sealing seat is detachably connected with the sliding frame, and the problem that when a filter screen of a traditional transformer oil tank is maintained, electrical equipment such as an iron core and a winding needs to be lifted out through a crane and the like, and the electrical equipment is prone to being damaged is solved.

Description

Technical Field

[0001] The present application relates to the technical field of transformers, and specifically discloses a transformer oil tank. Background Art

[0002] In order to enhance the insulation and cooling conditions of oil-immersed transformers, the iron core and windings of the transformer are immersed in an oil tank filled with transformer oil. Common transformer oil tanks are divided into two basic types: box-type and bell-type according to their capacity. Transformer oil plays an insulating and heat dissipating role. Transformer oil is both an insulating medium and a cooling medium. Through convection after heating, it brings the heat of the iron core and windings to the cooling device and then dissipates it to the surrounding air.

[0003] For the existing transformer oil tank, the transformer oil will inevitably deteriorate after long-term use. After the transformer oil deteriorates, peroxides, acids and even sludge are gradually generated. If the generated sludge is deposited in the oil tank, it cannot achieve the ideal heat dissipation and cooling effect. Some transformer oil tanks are provided with a filter at the bottom to filter the transformer oil to improve the quality of the transformer oil in the circulation pipe. However, when too much impurities or sludge accumulates on the filter, the filter needs to be cleaned and maintained. The traditional transformer oil tank is usually welded from a complete steel plate. When maintaining the filter, it is necessary to first use a crane to lift out the electrical equipment such as the core and winding. Not only is the work intensity high, but it is also easy to cause damage to the electrical equipment. Therefore, in view of this, the inventor provides a transformer oil tank to solve the above problems. Utility Model Content

[0004] The utility model aims to solve the problem that when the filter screen of the traditional transformer oil tank is maintained, the electric equipment such as the core and the winding need to be lifted out by a crane, which may easily cause damage to the electric equipment.

[0005] In order to achieve the above-mentioned object, the basic scheme of the utility model provides a transformer oil tank, comprising:

[0006] The box is used to place transformer oil, the iron core and the winding of the transformer, and a notch is provided at the bottom of one side wall of the box;

[0007] A sliding frame, wherein the sliding frame is slidably connected to the inner wall of the box and one end of the sliding frame can pass through the notch, and a filter screen for filtering transformer oil is provided in the sliding frame;

[0008] A sealing seat is arranged on the side wall of the box body and covers the notch. The sealing seat is detachably connected to the sliding frame.

[0009] The principles and effects of this basic solution are:

[0010] Compared with the prior art, the utility model provides a notch in the side wall of the box body so that the filter can be disassembled from the bottom of the side wall of the box body, thereby avoiding the movement of electrical equipment such as the iron core and the winding during the maintenance and cleaning of the filter screen. At the same time, a sliding frame is used to install the filter screen, which effectively gathers impurities or sludge in the transformer oil and prevents the sludge from being contaminated to the inner wall of the box body during the disassembly of the filter screen. At the same time, a sealing seat is used to cooperate with the box body and the sliding frame, which can not only fix the sliding frame, but also improve the sealing performance at the notch, thereby preventing the transformer oil from leaking during the use of the transformer.

[0011] Furthermore, a baffle is provided on the side wall of the sliding frame near the notch, a through slot for accommodating the sliding of the baffle is provided in the sealing seat, and a fixing seat for pressing the baffle tightly is detachably connected in the through slot. By providing the baffle and the fixing seat, the sliding frame can be prevented from shaking during use and affecting the sealing performance of the transformer oil.

[0012] Furthermore, the height of the baffle is greater than the height of the sliding frame, and the notch is provided with a stepped surface adapted to the height of the sliding frame and the baffle. The stepped surface can limit the sliding frame and effectively block transformer oil and sludge, thereby preventing the sludge from directly entering the fixing seat and affecting the performance.

[0013] Furthermore, a sealing groove is provided on the inner wall of one side of the through groove close to the box body, and a sealing ring is provided in the sealing groove to cover the peripheral end of the baffle. The sealing groove and the sealing ring can further improve the sealing performance between the sealing seat and the baffle to prevent transformer oil leakage.

[0014] Furthermore, a magnetic block that can be magnetically attracted to each other is provided between the fixing seat and the inner wall of the through slot. The magnetic block can improve the stability of the connection between the fixing seat and the sealing seat, and prevent the fixing seat from shaking during the use of the transformer.

[0015] Furthermore, a cavity is provided on one side of the fixing seat close to the baffle, and a pull ring is provided on the side wall of the baffle that can be inserted into the cavity. The pull ring is provided to facilitate the removal of the sliding seat during maintenance and cleaning of the filter, and the cavity is convenient for placing the pull ring.

[0016] Furthermore, a side wall of the sealing seat away from the box body is hinged with a loose-leaf plate that can cover the fixing seat, and the loose-leaf plate and the side wall of the fixing seat are provided with a plurality of mounting holes that can communicate with each other, and the mounting holes are all threadedly connected with fixing bolts. The loose-leaf plate and the fixing bolts are provided to facilitate fixing the fixing seat and disassembly of the fixing seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 A schematic diagram of the external structure of a transformer oil tank proposed in an embodiment of the present application is shown;

[0019] Figure 2 A partial structural cross-sectional view of a transformer oil tank proposed in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0020] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0021] The reference numerals in the drawings of the specification include: rail 1, box body 2, mounting plate 3, heat dissipation fin 4, sealing seat 5, fixing seat 6, hinged plate 7, fixing bolt 8, sliding frame 9, filter screen 10, baffle 11, sealing ring 12, pull ring 13, and magnetic block 14.

[0022] A transformer oil tank, for example Figure 1 As shown, it includes a box body 2, a sliding frame 9, a sealing seat 5 and a fixing seat 6, and the specific structure is as follows:

[0023] Box body 2: Box body 2 is used to place transformer oil and the iron core and winding of the transformer. The top of box body 2 is supported by two steel rails 1. Multiple heat dissipation fins 4 are arranged on the sides of box body 2. A mounting plate 3 for mounting the wire connection ends of various electrical components is arranged on the top of box body 2. A concave surface is arranged at the bottom of box body 2, and an oil drain pipe is connected at the lowest point of the concave surface. A valve is arranged on the oil drain pipe. An adapter groove located above the concave surface is arranged at the peripheral end of the inner wall of box body 2, and a notch corresponding to the position of the adapter groove is arranged at the bottom of the rear side wall of box body 2.

[0024] Slide box 9: Figure 2 As shown, the sliding frame 9 is adapted to the shape of the adapting groove on the inner wall of the box body 2. When the sliding frame 9 is installed in the box body 2, the sliding frame 9 fits the inner wall of the adapting groove, and the inner wall of the sliding frame 9 and the inner wall of the box body 2 are located in the same vertical plane. A baffle 11 is provided at the right end of the sliding frame 9, and the height of the baffle 11 is higher than the height of the sliding frame 9. Correspondingly, the notch side wall of the box body 2 is provided with a stepped surface adapted to the height of the sliding frame 9 and the baffle 11. A filter screen 10 is provided at the bottom of the sliding frame 9 to filter the transformer oil.

[0025] Sealing seat 5: The sealing seat 5 is arranged on the side wall of the box body 2 and covers the notch. The sealing seat 5 is integrally formed with the box body 2 or welded. After welding, the contact between the sealing seat 5 and the box body 2 needs to be polished to improve the sealing performance. A through groove for accommodating the sliding of the baffle 11 is provided in the sealing seat 5, and a sealing groove is provided on the inner wall on the left side of the through groove. A sealing ring 12 covering the peripheral end of the baffle 11 is provided in the sealing groove.

[0026] Fixed seat 6: The fixed seat 6 is installed in the through groove of the sealing seat 5. Handles are set at both ends of the fixed seat 6. A magnetic block 14 that can be magnetically attracted to each other is set between the fixed seat 6 and the inner wall of the through groove. In order to facilitate the disassembly and installation of the sliding frame 9, a pull ring 13 is set on the right side wall of the baffle 11, and a cavity for accommodating the pull ring 13 is set on the left side wall of the fixed seat 6. The right side wall of the sealing seat 5 is hinged with a loose-leaf plate 7 that can cover the fixed seat 6. The loose-leaf plate 7 and the side wall of the fixed seat 6 are provided with a number of mounting holes that can be connected to each other, and the mounting holes are all threaded with fixing bolts 8.

[0027] During the implementation of this embodiment, the sliding frame 9 should be located below electrical equipment such as the core and windings, and above the oil drain pipe. When the transformer needs to filter the transformer oil and maintain and clean the filter screen 10 after a period of operation, the transformer oil is first drained through the oil drain pipe. At this time, impurities such as sludge remain on the upper surface of the filter screen 10 and are located in the sliding frame 9. Then, the fixing bolts 8 are turned to separate the hinge plate 7 from the fixing seat 6, the fixing seat 6 is removed, and the baffle 11 is pulled by the pull ring 13, so that the sliding frame 9 is pulled out of the box body 2 as a whole, and then the filter screen in the sliding frame 9 can be cleaned and maintained. After the cleaning is completed, the sliding frame 9, the fixing seat 6, the fixing bolts 8, etc. can be installed in sequence.

[0028] In the process of maintaining the filter 10 in this embodiment, there is no need to move the iron core, windings and other electrical equipment, which can effectively reduce the workload and avoid damage to the iron core, windings and other electrical equipment.

[0029] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A transformer oil tank, characterized in that: include: The box is used to place transformer oil, the iron core and the winding of the transformer, and a notch is provided at the bottom of one side wall of the box; A sliding frame, wherein the sliding frame is slidably connected to the inner wall of the box and one end of the sliding frame can pass through the notch, and a filter screen for filtering transformer oil is provided in the sliding frame; A sealing seat is arranged on the side wall of the box body and covers the notch. The sealing seat is detachably connected to the sliding frame.

2. A transformer oil tank according to claim 1, characterized in that: A baffle is provided on a side wall of the sliding frame close to the notch, a through slot for accommodating the sliding of the baffle is provided in the sealing seat, and a fixing seat for pressing the baffle tightly is detachably connected in the through slot.

3. A transformer oil tank according to claim 2, characterized in that: The height of the baffle is greater than the height of the sliding frame, and the side wall of the notch is provided with a stepped surface adapted to the height of the sliding frame and the baffle.

4. A transformer oil tank according to claim 2, characterized in that: A sealing groove is arranged on the inner wall of one side of the through groove close to the box body, and a sealing ring covering the peripheral end of the baffle is arranged in the sealing groove.

5. A transformer oil tank according to claim 2, characterized in that: A magnetic block capable of magnetically adsorbing each other is arranged between the fixing seat and the inner wall of the through slot.

6. A transformer oil tank according to claim 2, characterized in that: A cavity is provided on one side of the fixing seat close to the baffle, and a pull ring which can extend into the cavity is provided on the side wall of the baffle.

7. A transformer oil tank according to claim 2, characterized in that: A side wall of the sealing seat away from the box body is hinged with a loose-leaf plate that can cover the fixing seat. The loose-leaf plate and the side wall of the fixing seat are provided with a plurality of mounting holes that can communicate with each other, and the mounting holes are all threadedly connected with fixing bolts.

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