CN212209125U - An oil-immersed transformer protective cover - Google Patents

Abstract

The utility model relates to the technical field of transformers, in particular to an oil-immersed transformer protective cover, which comprises a protective cover shell, the upper end of the protective cover shell is connected with a protective top cover, and the two sides of the protective cover shell are provided with refrigeration sheets. The outer side of the cooling fin is provided with an aluminum heat sink, and the other two sides of the protective cover shell are symmetrically provided with a first cable hole, a cable box is fixed on the first cable hole, and the cable box is fixedly connected by bolts. Cable box protective cover. The protective cover shell, the protective top cover and the wiring box of the utility model seal the high and low voltage bushings, conductive rods and other equipment on the upper part of the transformer to prevent oxidation and corrosion of the equipment, improve the service life of the transformer, and the protective top on the protective cover shell The cover is convenient for later protection. The cooling sheet absorbs the heat inside the protective cover shell, thereby reducing the temperature inside the protective cover shell. The insulating paint inside the protective cover of the ceramic strip and the cable box prevents short circuits and improves the safety of the device.

Description

An oil-immersed transformer protective cover

technical field

The utility model relates to a protective cover, in particular to an oil-immersed transformer protective cover, which belongs to the technical field of transformers.

Background technique

Transformers are mainly composed of iron cores, windings, oil tanks, oil pillows, insulating bushings, tap changers and gas relays. They can be divided into three-phase transformers and single-phase transformers. In three-phase power systems, three-phase transformers are generally used. When the capacity is too large and is limited by transportation conditions, three single-phase transformers can also be used to form a transformer group in a three-phase power system;

Distribution transformer is one of the important equipment in the power supply and distribution system of industrial and mining enterprises and civil buildings. It reduces the 10kV or 35kV network voltage to the 230/400V bus voltage used by users. Such products are suitable for AC 50 (60) Hz, The three-phase maximum rated capacity is 2500kVA, which can be used indoors and outdoors. When the capacity is 315kVA and below, it can be installed on the pole. The ambient temperature is not higher than 40℃, not lower than -25℃, the maximum daily average temperature is 30℃, the The annual average temperature is 20℃, the relative humidity does not exceed 90%, and the altitude does not exceed 1000m;

Most of the existing oil immersed transformers are used outdoors. Rain will cause oxidation and corrosion of conductive rods and high and low voltage wiring cables, thereby reducing the service life of the transformer;

Therefore, there is an urgent need to improve the protection device of the transformer to solve the above-mentioned problems.

Utility model content

The purpose of the utility model is to provide an oil-immersed transformer protective cover, the protective cover shell, the protective top cover and the wiring box seal the high and low voltage bushings, conductive rods and other equipment on the upper part of the transformer to prevent the sun and rain from causing The equipment is oxidized and corroded, and the service life of the transformer is improved.

In order to achieve the above-mentioned purpose, the main technical scheme adopted by the present utility model includes:

An oil-immersed transformer protective cover, comprising a protective cover shell, the upper end of the protective cover shell is provided with symmetrically distributed grooves, the upper end of the protective cover shell is movably connected with a protective top cover, the protective top The bottom of the cover is fixedly provided with a protruding strip used in cooperation with the groove;

The two sides of the protective cover shell are provided with symmetrically distributed cooling fin slots, the interior of the cooling fin slot is fixed with cooling fins, and the outer sides of the cooling fins are fixed with a number of uniformly distributed aluminum heat sinks piece;

The other two sides of the protective cover shell are symmetrically provided with a number of evenly distributed first wiring holes, the interior of the first wiring holes is fixedly provided with a ceramic ring, and the first wiring holes are fixedly arranged with rows of A cable box, the cable box is fixedly connected with a cable box protective cover by bolts.

Preferably, a number of evenly distributed mounting plates are fixedly arranged at the bottom of the shield shell, one end of the mounting plate is fixedly connected to the shield shell, and the other end of the mounting plate is fixed to the upper end of the transformer connect.

Preferably, symmetrically distributed handles are fixedly arranged on the upper part of the protective top cover, and a non-slip cover is fixedly arranged on the handles.

Preferably, the cooling fin is electrically connected to an external power source through a wire, the heat absorbing surface of the cooling fin is in contact with the inner side of the protective cover shell, and the heat dissipation surface of the cooling fin is in contact with the aluminum heat sink. Fixed connection.

Preferably, a plurality of uniformly distributed ceramic strips are fixedly arranged on the cable box, and a second cable hole that is used in cooperation with the first cable hole is opened between every two of the ceramic strips.

Preferably, a side surface of the wiring box is fixedly provided with a fixed connection plate, and the fixed connection plate is fixedly connected to a side surface of the protective cover shell.

Preferably, insulating paint is fixed inside the protective cover of the wiring box.

Preferably, a wire is arranged between each two of the ceramic strips, and one end of the wire passes through the second wire hole and the first wire hole and is electrically connected to the inner pole inside the protective cover shell. sexual connection.

The utility model at least has the following beneficial effects:

1. The protective cover shell, protective top cover and wiring box seal the high and low voltage bushings, conductive rods and other equipment on the upper part of the transformer to prevent oxidation and corrosion of the equipment caused by sun and rain, and improve the service life of the transformer.

2. The protective top cover on the protective cover shell can be slid left and right to open, or can be opened directly upwards, which is convenient for later maintenance and maintenance, and improves the flexibility of the device. The upper side of the protective top cover is provided with protrusions, which effectively The rainwater is diverted to prevent rainwater from entering the shell and improve the sealing performance of the device.

3. The two sides of the protective cover shell are fixed with cooling fins, which can absorb the heat inside the protective cover shell and dissipate the heat through the aluminum heat sink, thereby reducing the heat inside the protective cover shell.

4. The cable box can lead out the wires and lead them out through the cable protection cover to improve the sealing of the device, reduce the contact between the air and the conductive rod, and prevent the premature aging of the connection of the line, thereby improving the practicability of the device.

5. The insulating paint inside the protective cover of the ceramic strip and the cable box prevents the two wires from being adsorbed together due to the action of the magnetic field, causing circuit failure. The ceramic strip and the insulating paint have an insulating effect and improve the safety of the device.

Description of drawings

The drawings described herein are used to provide further understanding of the present application and constitute a part of the present application. The schematic embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation of the present application. In the attached image:

1 is an exploded view of the utility model;

Fig. 2 is the perspective view of the utility model;

3 is a perspective view of a wiring box of the present invention;

Fig. 4 is the top view of the utility model;

Fig. 5 is the left side view of the protective cover of the wiring box of the present invention.

In the figure, 1-protective cover shell, 101-groove, 102-cooling fin slot, 103-first cable hole, 2-protective top cover, 201-protrusion, 3-cooling fin, 4-aluminum heat sink Sheet, 5-Cable Box, 501-Fixed Connection Plate, 502-Cable Box Protective Cover, 503-Ceramic Strip, 504-Second Cable Hole, 6-Handle, 601-Anti-slip Sleeve, 7-Wire, 8- Mounting plate, 9-bolt, 10-ceramic ring, 11-insulating paint.

Detailed ways

The embodiments of the present application will be described in detail below with reference to the accompanying drawings and examples, so as to fully understand and implement the implementation process of how to apply technical means to solve technical problems and achieve technical effects in the present application.

As shown in FIGS. 1 to 5 , the oil-immersed transformer protective cover provided in this embodiment includes a protective cover shell 1 . The upper end of the protective cover shell 1 is provided with symmetrically distributed grooves 101 . The upper end is movably connected with a protective top cover 2, and the bottom of the protective top cover 2 is fixedly provided with a convex strip 201 for use with the groove 101. The protective top cover 2 on the protective cover shell 1 can be slid left and right to open, or it can be directly upward Open to facilitate later maintenance and maintenance, improve the flexibility of the device, the upper side of the protective top cover 2 is provided with a protrusion, which effectively diverts the rainwater, prevents rainwater from entering the shell, and improves the sealing performance of the device;

The two sides of the protective cover shell 1 are provided with symmetrically distributed cooling fin slots 102, the cooling fins 3 are fixed inside the cooling fin slot 102, and a number of uniformly distributed aluminum heat sinks are fixed on the outer side of the cooling fins 3. 4. The cooling fin 3 is electrically connected to the external power supply through wires, the heat-absorbing surface of the cooling fin 3 is in contact with the inner side of the protective cover shell 1, and the heat-dissipating surface of the cooling fin 3 is fixedly connected to the aluminum heat sink 4. Therefore, the cooling fins 3 are fixedly arranged on both sides of the shield shell 1, which can absorb the heat inside the shield shell 1 and dissipate the heat through the aluminum heat sink 4, thereby reducing the internal temperature of the shield shell 1. heat and prolong the service life of the transformer;

The other two sides of the protective cover shell 1 are symmetrically provided with a number of evenly distributed first cable holes 103 , the ceramic ring 10 is fixedly arranged inside the first cable hole 103 , and the first cable hole 103 is fixedly arranged with cables Box 5, the cable box 5 is fixedly connected with a cable box protective cover 502 by bolts 9, the cable box 5 can lead out the wire 7 and lead out through the cable protection cover 502, improve the sealing of the device, reduce air and electrical conductivity The contact of the rod prevents premature aging of the connection of the line, thereby increasing the service life of the device.

In this embodiment, as shown in FIG. 1 and FIG. 4 , four evenly distributed mounting plates 8 are fixedly arranged at the bottom of the protective cover shell 1 , and one end of the mounting plates 8 is fixedly connected with the protective cover shell 1 . The other end of 8 is fixedly connected with the upper end of the transformer, which improves the sealing performance of the device and the stability of use.

In this embodiment, as shown in FIG. 1 and FIG. 2 , the upper part of the protective top cover 2 is fixedly provided with symmetrically distributed handles 6 , and the handle 6 is fixedly provided with a non-slip sleeve 601 , which is convenient for opening the protective top cover 2 to inspect the device and maintenance to improve the efficiency of maintenance.

In the present embodiment, as shown in FIG. 3 , a plurality of uniformly distributed ceramic strips 503 are fixedly arranged on the cable box 5 , and between each two ceramic strips 503 there is a hole for coordinating with the first cable hole 103 . In the second cable hole 504, the insulating paint 11 is fixed inside the cable box protective cover 502. In this embodiment, as shown in FIG. 1, a wire 7 is arranged between every two ceramic strips 503. One end passes through the second cable hole 504 and the first cable hole 103 and is electrically connected to the inner pole inside the protective cover shell 1 to prevent the two wires from being attracted together due to the action of the magnetic field, causing circuit failure. The ceramic strips 503 and the insulating paint 11 have the function of insulating and improve the safety of the device.

In this embodiment, as shown in FIG. 1 and FIG. 3 , a fixed connection plate 501 is fixed on one side of the cable box 5 , and the fixed connection plate 501 is fixedly connected to one side of the protective cover shell 1 to lift the cable box. 5 stability.

As shown in Figures 1-5, the steps for using the oil-immersed transformer protective cover provided in this embodiment are as follows:

S1: First, fix the protective casing 1 on the upper part of the transformer through the mounting plate 8;

S2: Then open the cable box protective covers 502 on the cable boxes 5 on both sides of the protective casing 1, and pass the wires 7 through the second cable hole 504 and the first cable hole 103 into the inside of the protective casing 1 and It is electrically connected with the conductive rod in the protective shell 1;

S3: Then bend the wires 7 and fix them between the ceramic strips 503 respectively, and use the bolts 9 to fix the cable box protective cover 502 on the cable box 5;

S4: Finally, the protruding strips 201 on the protective top cover 2 are snapped into the grooves 101 on the protective cover 1 of the cable box, and then the cooling chip 3 is electrically connected to the external power supply.

As used in the specification and claims, certain terms are used to refer to particular components. It should be understood by those skilled in the art that hardware manufacturers may refer to the same component by different nouns. The description and claims do not use the difference in name as a way to distinguish components, but use the difference in function of the components as a criterion for distinguishing. As mentioned in the entire specification and claims, "comprising" is an open-ended term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve technical problems within a certain error range, and basically achieve technical effects.

It should be noted that the terms "comprising", "comprising" or any other variation thereof are intended to encompass non-exclusive inclusion, such that a commodity or system comprising a list of elements includes not only those elements, but also those not explicitly listed Other elements, or also include elements inherent to the commodity or system. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in the commodity or system that includes the element.

The above description shows and describes several preferred embodiments of the present invention, but as mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as the exclusion of other embodiments, but can be used Various other combinations, modifications and environments, and within the scope of the inventive concept described herein, can be modified from the above teachings or skill or knowledge in the relevant art. However, modifications and changes made by those skilled in the art do not depart from the spirit and scope of the present invention, and should fall within the protection scope of the appended claims of the present invention.

Claims (8)

1. The oil-immersed transformer protective cover comprises a protective cover shell (1), and is characterized in that grooves (101) which are symmetrically distributed are formed in the upper end of the protective cover shell (1), a protective top cover (2) is movably connected to the upper end of the protective cover shell (1), and raised lines (201) matched with the grooves (101) in use are fixedly arranged at the bottom of the protective top cover (2);

refrigeration sheet grooves (102) which are symmetrically distributed are formed in two side faces of the protective cover shell (1), refrigeration sheets (3) are fixedly arranged inside the refrigeration sheet grooves (102), and a plurality of aluminum cooling fins (4) which are uniformly distributed are fixedly arranged on the outer side faces of the refrigeration sheets (3);

a plurality of evenly distributed first wire arranging holes (103) are symmetrically formed in the other two sides of the protective cover shell (1), a ceramic ring (10) is fixedly arranged inside the first wire arranging holes (103), a wire arranging box (5) is fixedly arranged on the first wire arranging holes (103), and a wire arranging box protective cover (502) is fixedly connected to the wire arranging box (5) through bolts (9).

2. The oil-filled transformer shield according to claim 1, wherein: the fixed mounting panel (8) that are provided with a plurality of evenly distributed in bottom of shield casing (1), the one end of mounting panel (8) with shield casing (1) fixed connection, the upper end fixed connection of the other end and the transformer of mounting panel (8).

3. The oil-filled transformer shield according to claim 1, wherein: the upper portion of protection top cap (2) is fixed and is provided with handle (6) of symmetric distribution, fixed antiskid cover (601) that is provided with on handle (6).

4. The oil-filled transformer shield according to claim 1, wherein: the refrigeration piece (3) is electrically connected with an external power supply through a wire, the heat absorption surface of the refrigeration piece (3) is in contact with the inner side surface of the protective cover shell (1), and the heat dissipation surface of the refrigeration piece (3) is fixedly connected with the aluminum heat dissipation sheet (4).

5. The oil-filled transformer shield according to claim 1, wherein: a plurality of ceramic strips (503) which are uniformly distributed are fixedly arranged on the wire arranging box (5), and a second wire arranging hole (504) matched with the first wire arranging hole (103) for use is formed between every two ceramic strips (503).

6. The oil-filled transformer shield according to claim 1, wherein: a fixed connecting plate (501) is fixedly arranged on one side face of the winding displacement box (5), and the fixed connecting plate (501) is fixedly connected with one side face of the protective cover shell (1).

7. The oil-filled transformer shield according to claim 1, wherein: insulating paint (11) is fixedly arranged inside the flat cable box protective cover (502).

8. An oil filled transformer shield according to claim 5, characterized in that: every two be provided with wire (7) between pottery strip (503), the one end of wire (7) is passed second winding displacement hole (504) and first winding displacement hole (103) and with the inside interior pole electric connection of shield casing (1).

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