CN218038784U

CN218038784U - Oil-immersed power transformer

Info

Publication number: CN218038784U
Application number: CN202221743569.3U
Authority: CN
Inventors: 梁小兵; 冉海涛; 吴爱新; 程晨
Original assignee: Hangen Electric Technology Co ltd
Current assignee: Hangen Electric Technology Co ltd
Priority date: 2022-07-05
Filing date: 2022-07-05
Publication date: 2022-12-13
Anticipated expiration: 2032-07-05

Abstract

The utility model provides an oil-immersed power transformer, include: a transformer housing containing transformer oil; the oil-immersed power transformer comprises an accommodating box, a cooling liquid and a cooling liquid, wherein the accommodating box is used for accommodating the cooling liquid and is arranged in a region lower than the internal temperature of the oil-immersed power transformer; a heat pipe disposed in the accommodating box and contacting the coolant in the accommodating box; the heat absorption pipe is arranged in the transformer shell and is in contact with transformer oil in the transformer shell, and the output end of the heat absorption pipe is connected with the input end of the heat conduction pipe; the circulating pump is positioned outside the transformer shell, the input end of the circulating pump is connected with the output end of the heat conduction pipe, the output end of the circulating pump is connected with the input end of the heat absorption pipe, and the circulating pump drives a cooling medium to flow in the heat absorption pipe and the heat conduction pipe; when the external temperature of the transformer is higher than the internal temperature of the transformer, the containing box is arranged underground or indoors lower than the internal temperature of the oil-immersed power transformer, and when the external temperature of the transformer is higher than the internal temperature of the transformer, the running temperature of the transformer can be well reduced.

Description

Oil-immersed power transformer

Technical Field

The utility model relates to a transformer technical field especially relates to oil-immersed power transformer.

Background

The transformer is an electric energy conversion device in power plants, power transmission and transformation networks, substations and power transmission and transformation systems in enterprises, plays roles of voltage transformation, energy distribution, energy transmission and the like, and is important electrical equipment. The transformer is installed indoors or outdoors, and can be cooled through matching with an air conditioner indoors under the condition that the temperature of the transformer is too high, and is not suitable for matching with the air conditioner to cool outdoors.

In addition, the transformer installed outdoors can exceed the internal temperature of the transformer when the outdoor temperature is high in summer, the heat dissipation performance of the transformer can be greatly reduced, and secondly, the power consumption is in a peak period when the outdoor temperature is highest in summer, the temperature is further increased, the damage caused by the overhigh temperature of the transformer is changed, and the operation of the transformer is directly influenced.

In view of the above, the present inventors have invented an oil-filled power transformer.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to prior art's not enough, provide oil-immersed power transformer.

The utility model discloses a following technical means realizes solving above-mentioned technical problem: oil-immersed power transformer includes:

a transformer housing containing transformer oil;

the oil-immersed power transformer comprises an accommodating box, a cooling liquid and a cooling liquid, wherein the accommodating box is arranged in a region lower than the internal temperature of the oil-immersed power transformer;

a heat pipe disposed in the housing box and contacting the coolant in the housing box;

the heat absorption pipe is arranged in the transformer shell and is in contact with transformer oil in the transformer shell, and the output end of the heat absorption pipe is connected with the input end of the heat conduction pipe;

the circulating pump is positioned outside the transformer shell, the input end of the circulating pump is connected with the output end of the heat conduction pipe, the output end of the circulating pump is connected with the input end of the heat absorption pipe, and the circulating pump drives a cooling medium to flow inside the heat absorption pipe and the heat conduction pipe.

Further, the transformer oil is submerged in the heat absorption pipe.

Further, the heat conduction pipe is located in the cooling liquid.

Further, the containing box is arranged underground or indoors below the internal temperature of the oil-immersed power transformer.

Furthermore, a cooling liquid container is arranged in the containing box, a cooling medium is contained in the cooling liquid container, the output end of the heat conduction pipe is communicated with the cooling liquid container, and the input end of the circulating pump is communicated with the cooling liquid container.

Furthermore, the output end of the heat conduction pipe is fixedly arranged at the top of the cooling liquid container in a penetrating manner, and the input end of the circulating pump extends to the bottom in the cooling liquid container.

The utility model has the advantages that:

the utility model discloses oil-immersed power transformer, when the outside temperature of transformer is higher than its inside temperature, start the circulating pump, coolant flows between heat absorption pipe and heat pipe, when in the transformer shell, absorb the temperature of transformer oil, when through the heat pipe, conduct absorptive temperature to holding in the incasement cooling liquid, it is being less than in the inside temperature underground of oil-immersed power transformer or indoor to hold the case setting, be less than the earth's surface temperature equally, the outside temperature of transformer promptly, when the outside temperature of transformer is higher than its inside temperature, the operating temperature of reduction transformer that can be fine, when the outside temperature of transformer reduces, close the circulating pump, it can cool down by oneself to hold the cooling liquid of incasement.

Drawings

Fig. 1 is a schematic structural diagram of an oil-immersed power transformer according to an embodiment of the present invention;

fig. 2 is a schematic structural view of an oil-immersed power transformer in the second embodiment of the present invention;

in the figure: 1. a transformer housing; 2. a heat absorbing tube; 3. a connecting pipe; 4. a heat conducting pipe; 5. a circulation pump; 6. an accommodating box; 61. a liquid inlet pipe; 62. a liquid outlet pipe; 7. a cooling fluid container.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Example one

Referring to fig. 1, the oil-immersed power transformer according to this embodiment includes a transformer housing 1 and a circulating pump 5, the circulating pump 5 is located outside the transformer housing 1, transformer oil is contained in the transformer housing 1, a heat absorbing pipe 2 is further disposed in the transformer housing 1, an output end of the heat absorbing pipe 2 is connected to a heat conducting pipe 4, the heat absorbing pipe 2 is specifically connected to the heat conducting pipe 4 through a connecting pipe 3, the heat absorbing pipe 2 contacts the transformer oil, preferably, the heat absorbing pipe 2 is completely disposed in the transformer oil, that is, the transformer oil is submerged in the heat absorbing pipe 2, so that the heat absorbing pipe 2 is fully contacted with the transformer oil, the heat conducting pipe 4 is located in an accommodating box 6, the accommodating box 6 is disposed underground, a cooling liquid is disposed in the accommodating box 6, the heat conducting pipe 4 is located in the cooling liquid, the cooling liquid may be water, an output end of the heat conducting pipe 4 is connected to an input end of the circulating pump 5, an output end of the circulating pump 5 is connected to an input end of the heat absorbing pipe 2, a cooling medium flows inside the heat absorbing pipe 2 and the heat conducting pipe 4, and the cooling medium may be a cooling liquid of an automobile engine.

When the transformer oil temperature control device is used, when the external temperature of the transformer is higher than the internal temperature of the transformer, the circulating pump 5 is started, a cooling medium flows between the heat absorption pipe 2 and the heat conduction pipe 4, when the cooling medium passes through the transformer shell 1, the temperature of transformer oil is absorbed, when the cooling medium passes through the heat conduction pipe 4, the absorbed temperature is conducted into cooling liquid in the accommodating box 6, the accommodating box is arranged underground or indoors lower than the internal temperature of the oil-immersed power transformer and is also lower than the ground surface temperature, namely the external temperature of the transformer, when the external temperature of the transformer is higher than the internal temperature of the transformer, the running temperature of the transformer can be well reduced, when the external temperature of the transformer is reduced, the circulating pump 5 is closed, and the cooling liquid in the accommodating box 6 can be automatically cooled.

For example, when a transformer substation needs to be cooled down by multiple transformers as shown in fig. 1, the accommodating box 6 in this embodiment may be disposed indoors, and the cooling liquid in the accommodating box 6 is actively cooled down by an air conditioner, so as to ensure the heat absorption effect of the cooling liquid in the accommodating box 6.

Example two

Referring to fig. 2, in this embodiment, on the basis of the first embodiment, a cooling liquid container 7 is further configured in the accommodating box 6, a cooling medium is accommodated in the cooling liquid container 7, an output end of the heat pipe 4 is communicated with the cooling liquid container 7, and an input end of the circulating pump 5 is communicated with the cooling liquid container 7.

The cooling liquid container 7 is added, so that the cooling medium in the cooling liquid container 7 can be conveniently filtered and the running state of the cooling medium can be conveniently observed.

Wherein, heat pipe 4 output end is fixed to be worn to establish at 7 tops of coolant liquid container, and 5 inputs of circulating pump run through and extend to the bottom in the coolant liquid container 7, and the higher coolant of temperature is located 7 tops of coolant liquid container, and the lower coolant of temperature is located the bottom in the coolant liquid container 7, just in time by circulating pump 5 re-suction in transformer housing 1, further promote the heat dispersion of transformer.

When holding 6 internal cooling liquids and being water, hold 6 one end of case and fixedly wear to be equipped with feed liquor pipe 61, hold 6 other ends of case and fixedly wear to be equipped with drain pipe 62, feed liquor pipe 61 end input cooling liquid, drain pipe 62 output cooling liquid lets the rivers that hold in the case 6 flow, promotes the heat absorption effect to the cooling medium in heat pipe 4.

It should be noted that, in this document, if there are first and second, etc., relational terms are only used for distinguishing one entity or operation from another entity or operation, and there is no necessarily any requirement or suggestion that any actual relation or order exists between the entities or operations. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. Oil-immersed power transformer, its characterized in that includes:

a transformer housing (1) containing transformer oil;

the oil-immersed power transformer comprises an accommodating box (6), wherein cooling liquid is accommodated in the accommodating box (6), and the accommodating box (6) is arranged in a region lower than the internal temperature of the oil-immersed power transformer;

a heat transfer pipe (4) that is provided in the housing box (6) and that is in contact with the coolant in the housing box (6);

the heat absorption pipe (2) is arranged in the transformer shell (1) and is in contact with transformer oil in the transformer shell (1), and the output end of the heat absorption pipe (2) is connected with the input end of the heat conduction pipe (4);

the circulating pump (5) is located outside the transformer shell (1), the input end of the circulating pump (5) is connected with the output end of the heat conduction pipe (4), the output end of the circulating pump (5) is connected with the input end of the heat absorption pipe (2), and the circulating pump (5) is used for driving a cooling medium to flow inside the heat absorption pipe (2) and the heat conduction pipe (4).

2. Oil filled power transformer according to claim 1, characterized in that the transformer oil is submerged in the heat absorption tube (2).

3. Oil filled power transformer according to claim 2, characterized in that the heat conducting pipes (4) are located inside a cooling liquid.

4. Oil filled power transformer according to claim 3, characterized in that the containment tank (6) is arranged underground or indoors below the internal temperature of the oil filled power transformer.

5. Oil-filled power transformer according to claim 4, characterized in that a cooling liquid container (7) is arranged in the housing box (6), a cooling medium is contained in the cooling liquid container (7), the output end of the heat conducting pipe (4) is communicated with the cooling liquid container (7), and the input end of the circulating pump (5) is communicated with the cooling liquid container (7).

6. Oil-filled power transformer according to claim 5, characterized in that the heat conducting pipes (4) are fixed at the output end through the top of the cooling liquid container (7), and the circulating pump (5) is extended at the input end to the bottom inside the cooling liquid container (7).