Energy-saving oil-immersed transformer

Abstract

The utility model discloses an energy-saving oil-immersed transformer which comprises fins arranged on the side wall of a transformer shell, an inner frame is installed in the transformer shell, flow deflectors adjacent to the fins are arranged on the side wall of the inner frame at equal intervals, the flow deflectors are divided into horizontal inclined sections and vertical inclined sections according to the shape, the horizontal inclined sections are used for guiding oil liquid to be matched with the fins, and the vertical inclined sections are used for guiding oil liquid to be matched with the fins. The vertical inclined section is used for guiding oil to be matched with the inner frame. According to the energy-saving oil-immersed transformer provided by the utility model, a heat transfer function is achieved through the metal inner frame, and heat absorbed by the inner frame is directly sent to the fins through the plurality of flow deflectors, so that the heat transfer time of oil is shortened, meanwhile, more heat absorption capacity is provided for the transformer shell, the heat absorption burden of the oil is reduced, and the service life of the transformer is prolonged. And the horizontal inclined section and the vertical inclined section can enable the oil liquid to have the capacity of efficiently stirring and dissipating heat, so that cooling of the oil liquid is more environment-friendly and energy-saving, the original heat dissipation efficiency of the transformer is improved, and the transformer can cope with special temperature rising conditions.

Description

TECHNICAL FIELD

[0001] The utility model relates to transformer technical field, concretely related to an energy -conserving oil -immersed transformer. BACKGROUND

[0002] The transformer is the device for changing AC voltage by using electromagnetic induction principle, and the oil -immersed transformer mainly relies on insulating oil as cooling medium, and it has simple structure, easy maintenance and excellent performance such as high temperature resistance and is widely used in power station.

[0003] According to the public (announcement) number: CN107424758B, the public (announcement) day: May 9, 2023, an energy -conserving oil -immersed transformer is disclosed.

[0004] In the prior art including the above patent, the heat dissipation fin used in the oil -immersed transformer under normal circumstances can only meet the heat dissipation under short -term load, when the occasional load time of the transformer is lengthened, the heat dissipation efficiency of the heat dissipation fin cannot meet the temperature rise of the transformer, so that the oil -immersed transformer cannot guarantee safety when responding to high temperature environment under special conditions. UTILITY MODEL CONTENT

[0005] The utility model aims at providing an energy -conserving oil -immersed transformer, and aims at solving the problems generated above.

[0006] In order to realize the above object, the utility model provides the following technical scheme:

[0007] An energy -conserving oil -immersed transformer, including transformer shell, still including the fin of setting on the lateral wall of transformer shell, install the inner frame in the transformer shell, the inner frame lateral wall is equidistantly arranged with the flow -inducing piece of setting adjacent to fin;

[0008] The flow -inducing piece is divided into horizontal inclined section and vertical inclined section according to shape, the horizontal inclined section is used to guide oil liquid cooperation fin, and the vertical inclined section is used to guide oil liquid cooperation inner frame.

[0009] Preferably, the transformer shell lateral wall is continuously provided with an oil storage chamber, and the end portion of the flow -inducing piece penetrates the transformer shell and extends into the oil storage chamber.

[0010] Preferably, the oil storage chamber is provided with a storage cavity corresponding to the fin, and the end portion of the flow -inducing piece cooperates with the storage cavity.

[0011] Preferably, the inner frame is provided with a circulation section with a port oriented to the flow direction of the oil circuit.

[0012] Preferably, the inner frame is further provided with a supplementary section in communication with the circulation section.

[0013] In the above technical scheme, the energy-saving oil-immersed transformer has the following beneficial effects: the inner frame made of metal has a heat transfer function, and the heat absorbed by the inner frame is directly sent to the fins through the plurality of flow guides, so that the time for the oil to transfer heat is shortened, the heat absorption capacity of the transformer shell is increased, the heat absorption burden of the oil is reduced, the horizontally inclined section can stir the oil flowing in the horizontal direction, the purpose is to accelerate the heat loss of the oil, the vertically inclined section can make the oil flow vertically, and after the two are combined, the oil has a certain vortex downward function, so that the oil with increased stirring rate also loses heat faster, thereby increasing the cooling capacity of the oil on the transformer, and also effectively reducing the influence of oil sediment on the cooling effect, making the cooling of the oil more environmentally friendly and energy-saving, improving the original heat dissipation efficiency of the transformer, and enabling the transformer to cope with special temperature rise conditions. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art based on these drawings.

[0015] Figure 1 The oil-immersed transformer schematic diagram provided by the embodiment of the present application is provided.

[0016] Figure 2 The oil-immersed transformer cover and partial position top cover removal schematic diagram provided by the embodiment of the present application is provided.

[0017] Figure 3 The oil-immersed transformer cover and partial position top cover removal schematic diagram provided by the embodiment of the present application is provided.

[0018] Figure 4 The inner frame and the plurality of flow guides assembled schematic diagram provided by the embodiment of the present application is provided.

[0019] Explanation of reference signs:

[0020] 1, transformer shell; 2, inner frame; 21, circulation section; 22, supplement section; 3, oil storage chamber; 31, storage cavity; 32, fin; 4, flow guide; 41, horizontal inclined section; 42, vertical inclined section. DETAILED DESCRIPTION

[0021] In order to make those skilled in the art better understand the technical scheme of the present application, the present application will be further described in detail with reference to the drawings.

[0022] As Figures 1-4As shown in the energy-saving oil-immersed transformer, a transformer shell 1 is provided with fins 32 on the side wall, an inner frame 2 is installed in the transformer shell 1, and flow guiding vanes 4 are arranged equidistantly on the side wall of the inner frame 2 and adjacent to the fins 32.

[0023] The flow guiding vanes 4 are divided into horizontal inclined sections 41 and vertical inclined sections 42 according to shapes, the horizontal inclined sections 41 are used for guiding oil to cooperate with the fins 32, and the vertical inclined sections 42 are used for guiding oil to cooperate with the inner frame 2.

[0024] Specifically, the inner frame 2 and the flow guiding vanes 4 are made of corrosion-resistant and heat-conducting metal, and the fins 32 are also made of heat-conducting metal, and the outer wall of the fins 32 is coated with a corrosion-resistant and high-temperature-resistant paint surface, and the above-mentioned materials are all prior art and will not be described here.

[0025] Further, the flow guiding vanes 4 are fixedly installed on the side wall of the inner frame 2, and the horizontal inclined sections 41 and the vertical inclined sections 42 of the flow guiding vanes 4 can make the oil flow in two directions and can also be used in combination to stir the oil.

[0026] The coils placed in the inner frame 2 preferentially transmit heat to the inner frame 2 through the oil, so that the metal inner frame 2 plays a heat transfer function, and the heat absorbed by the inner frame 2 is directly sent to the fins 32 through the plurality of flow guiding vanes 4, which shortens the time of heat transfer of the oil and gives the transformer shell 1 more heat absorption capacity, reduces the heat absorption burden of the oil, and the horizontal inclined sections 41 can stir the heated and flowing oil in the horizontal direction, the purpose is to accelerate the heat loss of the oil, and the vertical inclined sections 42 can make the oil stir vertically, and after the combination of the two, the oil has a certain vortex downward function, so that the oil with increased stirring rate also loses heat faster, thereby increasing the cooling capacity of the oil to the transformer, and also effectively reducing the influence of oil sediment dirt on the cooling effect, making the cooling of the oil more environmentally friendly and energy-saving, improving the original heat dissipation efficiency of the transformer, and enabling the transformer to cope with special temperature rise conditions.

[0027] As a further embodiment of the utility model, the transformer shell 1 is provided with an oil storage chamber 3 on the side wall, and the end of the flow guiding vane 4 penetrates the transformer shell 1 and extends into the oil storage chamber 3.

[0028] Specifically, the transformer shell 1 is provided with a hole for the flow guiding vane 4 to penetrate, and the area of the hole is larger than that of the inclined flow guiding vane 4, so that the oil in the transformer shell 1 can enter the oil storage chamber 3 for use.

[0029] The oil storage chamber 3 separately contains oil, so that heat can be transmitted and absorbed by the oil storage chamber 3 and transmitted to the fins 32, and the stirred oil in the transformer shell 1 can be guided by the flow guiding vanes 4, so that the oil in the oil storage chamber 3 can also be replaced, accelerating the heat loss effect to the fins 32 and improving the cooling capacity.

[0030] As further provided by the utility model, a storage cavity 31 corresponding to the fin 32 is formed in the oil storage chamber 3, and the end of the flow guide vane 4 is matched with the storage cavity 31.

[0031] Specifically, the storage cavity 31 is semicircular, and the end of the flow guide vane 4 is located at the port of the storage cavity 31.

[0032] The capacity transferred by the flow guide vane 4 enters the storage cavity 31 and is then transferred to the fin 32 through the storage cavity 31. Although part of the space of the oil liquid hinders the heat transfer of the flow guide vane 4, the heat can still be quickly transferred to the fin 32. Meanwhile, the storage cavity 31 can also increase the contact air area and accelerate the heat dissipation.

[0033] As further provided by the utility model, a circulation section 21 with the port facing the flow direction of the oil circuit is arranged on the inner frame 2.

[0034] Specifically, the circulation section 21 makes the inner frame 2 in the shape of “G”, which aims to accelerate the flow efficiency of the oil liquid inside and outside the inner frame 2.

[0035] The oil liquid inside the transformer shell 1 is made to flow by the flow guide vane 4, so that the oil liquid enters the inner frame 2 from the circulation section 21, thereby accelerating the heat absorption rate of the oil liquid from the inner frame 2 and improving the heat dissipation effect. Meanwhile, the heat transfer capacity of the oil liquid inside and outside the inner frame 2 can also be improved, which is used to exchange the heat of the oil liquid of the coil.

[0036] As further provided by the utility model, a supplementary section 22 matched with the circulation section 21 is further arranged on the inner frame 2.

[0037] Specifically, the inner frame 2 is provided with support legs at the bottom to be connected with the transformer shell 1, which aims to have a gap for the oil liquid to pass through at the bottom of the inner frame 2.

[0038] The oil liquid affected by the vertical inclined section 42 is circulated and treated from the bottom of the inner frame 2 by the supplementary section 22, so that the oil liquid is vertically exchanged with the oil liquid inside and outside the inner frame 2, thereby improving the circulation efficiency of the oil liquid and further strengthening the cooling effect on the coil and increasing the cooling capacity of the oil-immersed transformer.

[0039] Working principle: the coil placed in the inner frame 2 preferentially transmits heat to the inner frame 2 through oil, so that the metal inner frame 2 plays a heat transfer function, and the heat absorbed by the inner frame 2 is directly sent to the fins 32 through the plurality of flow guides 4, shortens the time of heat transfer of oil, at the same time gives the transformer shell 1 more heat absorption capacity, reduces the heat absorption burden of oil, and the horizontal inclined section 41 can stir the oil flowing in the horizontal direction, the purpose is to accelerate the heat loss of oil, the same vertical inclined section 42 can make the oil stir vertically, and after the combination of the two, the oil has a certain vortex downward function, so that the oil with increased stirring rate also loses heat faster, thereby increasing the cooling capacity of the oil to the transformer, at the same time, it can also effectively reduce the oil sediment dirt and affect the cooling effect, and the oil storage chamber 3 contains oil alone, so that heat can be transmitted and absorbed by the oil storage chamber 3 and transmitted to the fins 32, at the same time, the oil stirred in the transformer shell 1 can be guided by the flow guide 4, so that the oil in the oil storage chamber 3 can also be replaced.

[0040] The above only describes some exemplary embodiments of the present application by way of illustration, without doubt, for ordinary skilled in the art, without departing from the spirit and scope of the present application, the described embodiments can be modified in various ways. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the present application.

Claims

1. An energy saving oil immersed transformer comprising a transformer housing (1), characterized in that, Also included are fins (32) arranged on the side wall of the transformer housing (1) in which the inner frame (2) is installed, and guide vanes (4) arranged adjacent to the fins (32) are arranged equidistantly on the side wall of the inner frame (2); The guide vanes (4) are divided into horizontal inclined sections (41) and vertical inclined sections (42) according to shape, the horizontal inclined sections (41) are used to guide oil to cooperate with the fins (32), and the vertical inclined sections (42) are used to guide oil to cooperate with the inner frame (2).

2. The energy-saving oil-immersed transformer according to claim 1, characterized in that, An oil storage chamber (3) is arranged in communication on the side wall of the transformer housing (1), and the end of the guide vane (4) penetrates the transformer housing (1) and extends into the oil storage chamber (3).

3. The energy-saving oil-immersed transformer according to claim 2, characterized in that, Corresponding storage cavities (31) corresponding to the fins (32) are formed in the oil storage chamber (3), and the end of the guide vane (4) cooperates with the storage cavities (31).

4. The energy-saving oil-immersed transformer according to claim 3, characterized in that, A circulation section (21) with a port oriented in the direction of oil flow is arranged on the inner frame (2).

5. The energy-saving oil-immersed transformer according to claim 4, characterized in that, A supplementary section (22) in communication with the circulation section (21) is further arranged on the inner frame (2).

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