Voltage transformer with insulating oil protection device

Abstract

According to the voltage transformer with the insulating oil protection device, the placement cavity is filled with the insulating oil, the voltage transformer is immersed in the insulating oil, so that oxidation reaction is avoided, meanwhile, in a high-voltage environment, electric arcs are extremely prone to being generated between the two electrodes of the voltage transformer, the insulating oil can be heated and decomposed to generate a large amount of gas, especially hydrogen, and the voltage transformer is protected. Heat can be quickly absorbed, electric arc can be extinguished, and safety of equipment and a system is ensured; meanwhile, a large amount of heat can be generated when the voltage transformer works, and the insulating oil absorbs the heat in a heat conduction and convection mode and dissipates the heat through natural circulation or forced circulation, so that safe operation of equipment is guaranteed; in order to enhance heat dissipation, a heat-conducting plate further absorbs and conducts heat of the insulating oil, the heat conductivity of the heat-conducting plate is improved through a heat-dissipating fan on the outer side of the heat-conducting plate, meanwhile, in order to avoid dust accumulation on the outer side of the heat-conducting plate, a dustproof net is arranged on a shell of the heat-dissipating fan, and the situation that heat conduction of the heat-conducting plate is affected by accumulated dust is avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of voltage transformers, and particularly relates to a voltage transformer with an insulating oil protection device. Background Art

[0002] A voltage transformer is similar to a transformer and is an instrument used to transform voltage. The purpose of transforming voltage by the voltage transformer is mainly to supply power to measuring instruments and relay protection devices, to measure the voltage, power, and electric energy of a line, or to protect valuable equipment, motors, and transformers in the line when a line fault occurs.

[0003] For existing voltage transformers, since they are installed outdoors, they will come into frequent contact with moisture in the air, and oxidation reactions will occur under the action of moisture and oxygen. Moreover, when the voltage transformer is working, the voltage between the two electrodes is very high, and electric arcs are extremely likely to be generated, posing safety hazards to equipment and systems; and because the load of the voltage transformer is relatively large, the temperature inside the housing of the voltage transformer will rise when it is working, so the gas inside the housing will generate a relatively high pressure, presenting a safety hazard; therefore, the present invention proposes a voltage transformer with an insulating oil protection device to solve the above problems. Summary of the Invention

[0004] The present invention provides a voltage transformer with an insulating oil protection device, aiming to solve the problems raised in the background art.

[0005] The present invention is implemented as follows. A voltage transformer with an insulating oil protection device includes a housing and a heat dissipation component;

[0006] An installation cavity is provided inside the housing, a voltage transformer is provided inside the installation cavity, a corrugated pipe is embedded on the outer wall of the installation cavity, and a heat dissipation plate is provided at the bottom of the housing;

[0007] The heat dissipation component includes a heat conduction plate, the heat conduction plate is provided at the rear side of the housing, a heat conduction silicone rubber seal ring is provided at the connection between the heat conduction plate and the housing, a heat dissipation fan is provided outside the heat conduction plate, and a dust-proof net is provided outside the heat dissipation fan;

[0008] The front side, left and right sides of the installation cavity and the heat conduction plate form a sealed space for the installation cavity, the installation cavity is filled with insulating oil, and the voltage transformer is immersed in the insulating oil.

[0009] Preferably, the corrugated pipe is a metal corrugated pipe, the inside of the corrugated pipe is filled with insulating oil, and the corrugated pipe communicates with the internal space of the installation cavity.

[0010] Preferably, an oil inlet is provided on the outer side of the housing, and the oil inlet communicates with the corrugated pipe.

[0011] Preferably, a base is provided at the bottom of the heat dissipation plate.

[0012] Preferably, there are a plurality of the bases, and the plurality of bases are spaced apart along the extending direction of the heat dissipation plate.

[0013] Preferably, there are a plurality of the heat dissipation fans, and the plurality of heat dissipation fans are spaced apart along the vertical direction of the housing.

[0014] Preferably, the dust-proof net is snap-connected to the outer shell of the heat dissipation fan.

[0015] Preferably, the distance between the heat dissipation fan and the heat conduction plate is less than 2 cm.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. The front side, left and right sides of the placement cavity and the heat conduction plate form a sealed space for the placement cavity. The placement cavity is filled with insulating oil, and the voltage transformer is immersed in the insulating oil. In this way, it is avoided that the voltage transformer is in a humid and oxygen environment in a high-temperature environment, and the oxidation reaction on the surface of the voltage transformer is avoided. At the same time, in a high-voltage environment, an arc is extremely likely to be generated between the two poles of the voltage transformer. The insulating oil will be thermally decomposed to generate a large amount of gas, especially hydrogen. These gases can quickly absorb heat and extinguish the arc, ensuring the safety of the equipment and the system. Among them, the insulating oil has excellent insulating properties, which can significantly improve the insulation ability of the voltage transformer. It can prevent air or moisture from entering, thereby enhancing the insulation strength of the equipment. At the same time, a large amount of heat will be generated when the voltage transformer works. The insulating oil absorbs heat through heat conduction and convection, and dissipates it through natural circulation or forced circulation, thereby ensuring the safe operation of the equipment;

[0018] 2. In order to enhance heat dissipation, a heat dissipation assembly is also provided. Among them, the heat conduction plate is in direct contact with the insulating oil in the placement cavity. The heat conduction plate further absorbs and conducts the heat of the insulating oil, and improves the heat conductivity of the heat conduction plate through the heat dissipation fan outside the heat conduction plate. At the same time, in order to prevent dust from accumulating outside the heat conduction plate, a dust-proof net is provided on the outer shell of the heat dissipation fan to avoid the influence of dust accumulation on the heat conduction of the heat conduction plate; a heat dissipation plate is provided at the bottom of the housing. Among them, a heat-conducting silica gel sealing ring is provided at the connection between the heat conduction plate and the housing. The heat-conducting silica gel sealing ring can conduct heat. The heat-conducting silica gel sealing ring transfers the heat on the heat conduction plate to the housing, and the housing transfers the heat to the heat dissipation plate. The heat dissipation plate is connected to the bottom of the housing, and the heat dissipation plate can also absorb a part of the temperature on the housing, thereby further enhancing the heat dissipation of the housing;

[0019] 3. The dust-proof net is snap-connected to the housing of the cooling fan, so that when the dust-proof net needs to be cleaned or replaced, the dust-proof net can be disassembled simply and quickly. At the same time, after being powered on, when the voltage transformer works, the cooling fan also works simultaneously. The cooling fan extracts the air near the heat conduction plate and blows it out to the outside of the cooling fan. Due to the effect of the wind direction, the problem of dust accumulation on the heat conduction plate inside and outside can also be avoided. Description of the Drawings

[0020] Figure 1 is a three-dimensional view of the overall structure of the present invention;

[0021] Figure 2 is a front cross-sectional view of the overall structure of the present invention;

[0022] Figure 3 is a view of the position of the heat conduction plate in the overall structure of the present invention;

[0023] Figure 4 is a rear view of the overall structure of the present invention.

[0024] In the figure:

[0025] 1. Housing; 11. Placement cavity; 12. Voltage transformer; 13. Bellows; 14. Oil inlet; 15. Heat dissipation plate; 16. Base;

[0026] 2. Heat dissipation assembly; 21. Heat conduction plate; 22. Heat conduction silicone rubber sealing ring; 23. Cooling fan; 24. Dust-proof net. Detailed Embodiments

[0027] Hereinafter, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention.

[0028] Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents the selected embodiments of the present invention.

[0029] Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Please refer to Figures 1 to 4 , the present invention provides a technical solution: a voltage transformer with an insulating oil protection device, including a housing 1 and a heat dissipation component 2; an accommodation cavity 11 is provided inside the housing 1, a voltage transformer 12 is provided inside the accommodation cavity 11, a bellows 13 is embedded on the outer wall of the accommodation cavity 11, and a heat dissipation plate 15 is provided at the bottom of the housing 1; the heat dissipation component 2 includes a heat conduction plate 21, the heat conduction plate 21 is provided at the rear side of the housing 1, a heat conduction silicone rubber sealing ring 22 is provided at the connection between the heat conduction plate 21 and the housing 1, a heat dissipation fan 23 is provided outside the heat conduction plate 21, and a dust-proof net 24 is provided outside the heat dissipation fan 23; the front side, left and right sides of the accommodation cavity 11 and the heat conduction plate 21 form a sealed space for the accommodation cavity 11, insulating oil is filled inside the accommodation cavity 11, and the voltage transformer 12 is immersed in the insulating oil.

[0033] In this embodiment, the front side, left and right sides and heat conducting plate 21 of the placement cavity 11 form a sealed space for the placement cavity 11, and the interior of the placement cavity 11 is filled with insulating oil, and the voltage transformer 12 is immersed in the insulating oil, so that the voltage transformer 12 is prevented from being in a humid and oxygen environment under a high temperature environment, and oxidation reaction is prevented from occurring on the surface of the voltage transformer 12. At the same time, under a high voltage environment, an arc is easily generated between the two poles of the voltage transformer 12, and the insulating oil will decompose under heat to produce a large amount of gas, especially hydrogen. These gases can quickly absorb heat and extinguish the arc, thereby ensuring the safety of the equipment and the system. The insulating oil has excellent insulating properties, and can significantly improve the insulation capacity of the voltage transformer 12. It can prevent air or moisture from entering, thereby enhancing the insulation strength of the equipment. At the same time, the voltage transformer 12 will generate a large amount of heat when working, and the insulating oil absorbs heat through heat conduction and convection, and dissipates it through natural circulation or forced circulation. , thereby ensuring the safe operation of the equipment; in order to enhance heat dissipation, the present invention is provided with a heat dissipation component 2, wherein a heat conducting plate 21 is in direct contact with the insulating oil in the placement cavity 11, the heat conducting plate 21 further absorbs and conducts the heat of the insulating oil, and the heat dissipation fan 23 on the outside of the heat conducting plate 21 improves the thermal conductivity of the heat conducting plate 21, and at the same time, in order to avoid dust accumulation on the outside of the heat conducting plate 21, a dustproof net 24 is provided on the outer shell of the heat dissipation fan 23, so as to avoid dust accumulation affecting the heat conduction of the heat conducting plate 21; a heat dissipation plate 15 is provided at the bottom of the shell 1, wherein a heat conducting silicone sealing ring 22 is provided at the connection between the heat conducting plate 21 and the shell 1, the heat conducting silicone sealing ring 22 can conduct heat, the heat conducting silicone sealing ring 22 transfers the heat on the heat conducting plate 21 to the shell 1, and the shell 1 transfers the heat to the heat dissipation plate 15, the heat dissipation plate 15 is connected to the bottom of the shell 1, and the heat dissipation plate 15 can also absorb a part of the temperature on the shell 1, thereby further enhancing the heat dissipation of the shell 1.

[0034] For further information, see Figure 2 The bellows 13 is a metal bellows, the interior of the bellows 13 is filled with insulating oil, and the bellows 13 is connected to the internal space of the placement cavity 11.

[0035] In this embodiment, the bellows 13 is a metal bellows, and the interior of the bellows 13 is filled with insulating oil. The bellows 13 is connected to the internal space of the placement cavity 11, so that insulating oil can be added and discharged through the bellows 13. When extracting the insulating oil, a water pump is required, so that the insulating oil in the placement cavity 11 and the bellows 13 can be extracted; when adding, the insulating oil connecting pipe is connected to the bellows 13 to add insulating oil.

[0036] For further information, see Figure 1 and Figure 2 An oil inlet 14 is provided on the outer side of the housing 1 , and the oil inlet 14 is connected to the bellows 13 .

[0037] In this embodiment, insulating oil is added and discharged through the oil inlet 14.

[0038] Furthermore, please refer to Figure 1 , a base 16 is provided at the bottom of the heat dissipation plate 15.

[0039] Furthermore, please refer to Figure 1 , there are multiple bases 16, and the multiple bases 16 are spaced apart along the extending direction of the heat dissipation plate 15.

[0040] In this embodiment, the base 16 raises the housing 1 and the heat dissipation plate 15, creating a height difference between the heat dissipation plate 15 and the ground. This does not impede the heat dissipation performance of the heat dissipation plate 15, and there is air circulation between the base 16 and the heat dissipation plate 15, which can accelerate the heat dissipation performance of the heat dissipation plate 15.

[0041] Furthermore, please refer to Figure 4 , there are multiple heat dissipation fans 23, and the multiple heat dissipation fans 23 are spaced apart along the vertical direction of the housing 1.

[0042] In this embodiment, the multiple heat dissipation fans 23 spaced apart along the vertical direction of the housing 1 work simultaneously, which can accelerate the heat transfer speed of the heat conduction plate 21 and enable it to dissipate heat more quickly.

[0043] Furthermore, the dust-proof net 24 is snap-connected to the outer shell of the heat dissipation fan 23.

[0044] In this embodiment, the dust-proof net 24 is snap-connected to the outer shell of the heat dissipation fan 23, so that when the dust-proof net 24 needs to be cleaned or replaced, the dust-proof net 24 can be disassembled simply and quickly; at the same time, since after being powered on, when the voltage transformer 12 works, the heat dissipation fan 23 also works simultaneously, and the heat dissipation fan 23 extracts the air near the heat conduction plate 21 and blows it out to the outside of the heat dissipation fan 23. Due to the effect of the wind direction, the problem of dust accumulation inside and outside on the heat conduction plate 21 can also be avoided.

[0045] Furthermore, the distance between the heat dissipation fan 23 and the heat conduction plate 21 is less than 2 cm.

[0046] In this embodiment, the distance between the heat dissipation fan 23 and the heat conduction plate 21 is less than 2 cm, which can accelerate the exchange of hot air near the heat conduction plate 21 and cold air outside, increase the heat transfer speed of the heat conduction plate 21, and enable the temperature inside the insulating oil to dissipate heat as soon as possible.

[0047] Working principle and usage process of the present invention: The front side, left and right sides of the placement cavity 11 and the heat conduction plate 21 form a sealed space for the placement cavity 11. The placement cavity 11 is filled with insulating oil, and the voltage transformer 12 is immersed in the insulating oil. This avoids the voltage transformer 12 being in a moisture and oxygen environment under high-temperature conditions, preventing oxidation reactions on the surface of the voltage transformer 12. At the same time, under high-voltage conditions, an arc is extremely likely to be generated between the two poles of the voltage transformer 12. The insulating oil will decompose when heated to produce a large amount of gas, especially hydrogen. These gases can quickly absorb heat and extinguish the arc, ensuring the safety of the equipment and system. Among them, the insulating oil has excellent insulation performance, which can significantly improve the insulation ability of the voltage transformer 12. It can prevent air or moisture from entering, thereby enhancing the insulation strength of the equipment. At the same time, a large amount of heat is generated when the voltage transformer 12 works. The insulating oil absorbs heat through heat conduction and convection, and dissipates it through natural circulation or forced circulation, thus ensuring the safe operation of the equipment; To enhance heat dissipation, the present invention is provided with a heat dissipation component 2. Among them, the heat conduction plate 21 is in direct contact with the insulating oil in the placement cavity 11. The heat conduction plate 21 further absorbs and conducts the heat of the insulating oil, and improves the heat conductivity of the heat conduction plate 21 through the heat dissipation fan 23 on the outer side of the heat conduction plate 21. At the same time, to prevent dust accumulation on the outer side of the heat conduction plate 21, a dust-proof net 24 is provided on the outer shell of the heat dissipation fan 23, avoiding the influence of dust accumulation on the heat conduction of the heat conduction plate 21; A heat dissipation plate 15 is provided at the bottom of the housing 1. Among them, a heat-conducting silicone rubber sealing ring 22 is provided at the connection between the heat conduction plate 21 and the housing 1. The heat-conducting silicone rubber sealing ring 22 can conduct heat. The heat-conducting silicone rubber sealing ring 22 transfers the heat on the heat conduction plate 21 to the housing 1. The housing 1 transfers the heat to the heat dissipation plate 15. The heat dissipation plate 15 is connected to the bottom of the housing 1. The heat dissipation plate 15 can also absorb a part of the temperature on the housing 1, thereby further enhancing the heat dissipation of the housing 1.

[0048] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A voltage transformer with an insulating oil protection device, characterized in that: It includes a housing (1) and a heat dissipation component (2); An accommodation cavity (11) is provided inside the housing (1), a voltage transformer (12) is provided inside the accommodation cavity (11), a corrugated pipe (13) is embedded on the outer wall of the accommodation cavity (11), and a heat dissipation plate (15) is provided at the bottom of the housing (1); The heat dissipation component (2) includes a heat conducting plate (21), the heat conducting plate (21) is arranged at the rear side of the housing (1), a heat conducting silicone rubber sealing ring (22) is provided at the connection between the heat conducting plate (21) and the housing (1), a heat dissipation fan (23) is provided outside the heat conducting plate (21), and a dust-proof net (24) is provided outside the heat dissipation fan (23); The front side, left and right sides of the accommodation cavity (11) and the heat conducting plate (21) form a sealed space for the accommodation cavity (11), the accommodation cavity (11) is filled with insulating oil, and the voltage transformer (12) is immersed in the insulating oil.

2. The voltage transformer with an insulating oil protection device according to claim 1, characterized in that: The corrugated pipe (13) is a metal corrugated pipe, the inside of the corrugated pipe (13) is filled with insulating oil, and the corrugated pipe (13) communicates with the internal space of the accommodation cavity (11).

3. The voltage transformer with an insulating oil protection device according to claim 2, characterized in that: An oil inlet (14) is provided outside the housing (1), and the oil inlet (14) communicates with the corrugated pipe (13).

4. A voltage transformer with an insulating oil protection device according to claim 1, characterized in that: A base (16) is provided at the bottom of the heat dissipation plate (15).

5. The voltage transformer with an insulating oil protection device according to claim 4, characterized in that: There are multiple bases (16), and the multiple bases (16) are spaced apart along the extending direction of the heat dissipation plate (15).

6. The voltage transformer with an insulating oil protection device according to claim 1, characterized in that: There are multiple heat dissipation fans (23), and the multiple heat dissipation fans (23) are spaced apart along the vertical direction of the housing (1).

7. A voltage transformer with an insulating oil protection device according to claim 1, characterized in that: The dust-proof net (24) is snap-connected to the outer shell of the heat dissipation fan (23).

8. A voltage transformer with an insulating oil protection device according to claim 6, characterized in that: The distance between the heat dissipation fan (23) and the heat conducting plate (21) is less than 2 cm.

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