Transformer rear end oil cooling system

Abstract

The utility model relates to a transformer rear end oil cooling system which is characterized by comprising a transformer oil tank external cooling tank body, a cooling oil circulation module and a heat exchange circulation module. Cooling oil in the transformer oil tank serves as a heat release medium to participate in the external heat exchange circulation module, and the heat dissipation effect of the cooling oil is improved through flowing heat release of the cooling oil compared with static heat release; in addition, the cooling oil system at the rear end of the transformer forms a modularized structure, can be directly connected to a transformer oil tank through a pipeline, is convenient and rapid to operate, has a good cooling effect, and can effectively improve the service power and prolong the service life of the transformer.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer oil cooling, in particular to a transformer rear end oil cooling system. Background Art

[0002] Transformers are one of the most critical pieces of equipment in power systems, responsible for voltage conversion, power distribution, and transmission. Therefore, the proper functioning of transformers is crucial for the safe, reliable, high-quality, and economical operation of power systems. Transformer failures and accidents must be minimized and prevented to the greatest extent possible.

[0003] Especially in the extreme ambient temperature of the transformer in summer, the oil temperature cooling system is prone to oil temperature exceeding the limit; the commonly used transformer oil temperature cooling method is to set a cooling pipe in the transformer oil tank, and cool the transformer oil tank by circulating the cooling medium in the cooling pipe; however, this cooling method has certain cooling risks. Once the cooling medium leaks into the transformer oil tank, it will threaten the safe operation of the transformer; there is also a method of setting heat dissipation fins on the outer wall of the transformer oil tank, and then dissipating the heat from the heat dissipation fins by air cooling. This transformer oil tank cooling method has poor cooling effect and is noisy. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a transformer rear end oil cooling system, which can solve the problem that the traditional transformer cooling oil is directly cooled inside the transformer oil tank, which additionally increases the volume of the transformer oil tank and has poor cooling effect.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a transformer rear end oil cooling system, the innovation of which is that it includes a transformer oil tank external cooling box, a cooling oil circulation module and a heat exchange circulation module;

[0006] The transformer oil tank external cooling box is a rectangular parallelepiped shell structure, and a partition plate is horizontally arranged in the transformer oil tank external cooling box to divide the transformer oil tank external cooling box into an upper compartment and a lower compartment;

[0007] The cooling oil circulation module includes an oil pump, an oil inlet pipeline, and an oil outlet pipeline; the oil pump is driven by a motor and is arranged in the lower compartment of the transformer oil tank external cooling box; one end of the oil inlet pipeline is connected to the transformer oil tank, and the other end of the oil inlet pipeline is connected to the input end of the oil pump; one end of the oil outlet pipeline is connected to the output end of the oil pump, and the other end of the oil outlet pipeline is connected to the transformer oil tank;

[0008] The heat exchange circulation module includes a compressor, a condenser, an evaporator and a heat exchange circulation pipeline; the compressor is arranged in the lower compartment of the transformer oil tank external cooling box, the condenser is arranged in the upper compartment of the transformer oil tank external cooling box, and a motor-driven fan is provided above the condenser for heat dissipation of the condenser; the compressor, condenser and evaporator are arranged in series on the heat exchange circulation pipeline; an electronic expansion valve is provided on the output end of the heat exchange circulation pipeline at the condenser; the evaporator is connected to the oil outlet pipeline, and the evaporator absorbs the heat of the transformer cooling oil in the oil outlet pipeline to realize heat exchange of the transformer cooling oil.

[0009] Furthermore, a door is provided on one side of the upper cabin, and side panels are provided on both sides of the door, and heat dissipation holes are distributed in an array on the side panels; a condenser temperature sensor is provided in the upper cabin; a control panel is provided in the upper cabin, and a room temperature sensor is connected to the control panel, and a touch control screen connected to the control panel is provided on the door of the upper cabin.

[0010] Furthermore, an accumulator is connected in series on the heat exchange circulation pipeline at the input end of the compressor, and an exhaust temperature sensor is provided at the output end of the compressor.

[0011] Furthermore, an electronic expansion valve outlet temperature sensor is provided at the output end of the electronic expansion valve located on the heat exchange circulation pipeline.

[0012] Furthermore, a filter is provided on the heat exchange circulation pipe at the input end of the electronic expansion valve.

[0013] Furthermore, the evaporator is connected to an oil drain pipe.

[0014] Furthermore, temperature sensors are provided on both the oil inlet pipeline and the oil outlet pipeline.

[0015] The advantages of the present invention are:

[0016] 1) In the present invention, the cooling oil in the transformer tank is used as a heat release medium to participate in the external heat exchange circulation module. The heat release through the flow of the cooling oil is improved compared with static heat release. In addition, the transformer rear-end cooling oil system forms a modular structure and can be directly connected to the transformer tank through pipes. It is easy and quick to operate, and has a good cooling effect, which can effectively increase the power and service life of the transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0018] Figure 1This is a working principle diagram of a transformer rear end oil cooling system of the utility model.

[0019] Figure 2 This is a schematic diagram of the installation structure of a transformer rear end oil cooling system of the utility model. DETAILED DESCRIPTION

[0020] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0022] like Figures 1 to 2 The transformer rear end oil cooling system shown includes a transformer oil tank external cooling box 1, a cooling oil circulation module 2 and a heat exchange circulation module 3.

[0023] The transformer oil tank external cooling box 1 is a rectangular parallelepiped shell structure, and a partition plate is horizontally arranged inside the transformer oil tank external cooling box 1 to divide the transformer oil tank external cooling box into an upper compartment and a lower compartment;

[0024] The cooling oil circulation module 2 includes an oil pump 21, an oil inlet pipeline 22, and an oil outlet pipeline 23. The oil pump 21 is driven by a motor and is arranged in the lower compartment of the transformer oil tank external cooling box 1. One end of the oil inlet pipeline 22 is connected to the transformer oil tank, and the other end of the oil inlet pipeline 22 is connected to the input end of the oil pump 21. One end of the oil outlet pipeline 23 is connected to the output end of the oil pump 21, and the other end of the oil outlet pipeline 23 is connected to the transformer oil tank.

[0025] The heat exchange circulation module 3 includes a compressor 31, a condenser 32, an evaporator 33 and a heat exchange circulation pipe 34; the compressor 31 is arranged in the lower compartment of the transformer oil tank external cooling box 1, and the condenser 32 is arranged in the upper compartment of the transformer oil tank external cooling box 1, and a motor-driven fan 35 is provided above the condenser 32 for heat dissipation of the condenser; the compressor 31, condenser 32 and evaporator 33 are arranged in series on the heat exchange circulation pipe 34; an electronic expansion valve 36 is provided on the heat exchange circulation pipe 34 at the output end of the condenser; the evaporator 33 is connected to the oil outlet pipeline 23, and the evaporator 33 absorbs the heat of the transformer cooling oil in the oil outlet pipeline 23 to realize heat exchange of the transformer cooling oil.

[0026] A door is provided on one side of the upper cabin, and side panels are provided on both sides of the door, and heat dissipation holes are distributed in an array on the side panels; a condenser temperature sensor is provided in the upper cabin; a control panel 30 is provided in the upper cabin, and a room temperature sensor is connected to the control panel, and a touch control screen connected to the control panel is provided on the door of the upper cabin.

[0027] An accumulator 37 is connected in series on the heat exchange circulation pipeline 3 at the input end of the compressor 31, and an exhaust temperature sensor is provided at the output end of the compressor 31; an electronic expansion valve outlet temperature sensor is provided on the heat exchange circulation pipeline 34 at the output end of the electronic expansion valve 36; a filter 38 is provided on the heat exchange circulation pipeline 34 at the input end of the electronic expansion valve 36; an oil drain pipeline 39 is connected to the evaporator 33; and temperature sensors are provided on both the oil inlet pipeline 22 and the oil outlet pipeline 23.

[0028] The working principle of the utility model is: the cooling oil in the transformer oil tank is used as a heat release medium to participate in the external heat exchange circulation module, and the heat release through the flow of the cooling oil is improved compared with static heat release; in addition, the transformer rear-end cooling oil system forms a modular structure and can be directly connected to the transformer oil tank through a pipeline. The operation is convenient and fast, and the cooling effect is good, which can effectively improve the power and service life of the transformer.

[0029] Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements shall fall within the scope of the present invention to be protected.

Claims

1. A transformer rear end oil cooling system, characterized by: It includes a transformer oil tank external cooling box, a cooling oil circulation module and a heat exchange circulation module; The transformer oil tank external cooling box is a rectangular parallelepiped shell structure, and a partition plate is horizontally arranged in the transformer oil tank external cooling box to divide the transformer oil tank external cooling box into an upper compartment and a lower compartment; The cooling oil circulation module includes an oil pump, an oil inlet pipeline, and an oil outlet pipeline; the oil pump is driven by a motor and is arranged in the lower compartment of the transformer oil tank external cooling box; one end of the oil inlet pipeline is connected to the transformer oil tank, and the other end of the oil inlet pipeline is connected to the input end of the oil pump; one end of the oil outlet pipeline is connected to the output end of the oil pump, and the other end of the oil outlet pipeline is connected to the transformer oil tank; The heat exchange circulation module includes a compressor, a condenser, an evaporator and a heat exchange circulation pipeline; the compressor is arranged in the lower compartment of the transformer oil tank external cooling box, the condenser is arranged in the upper compartment of the transformer oil tank external cooling box, and a motor-driven fan is provided above the condenser for heat dissipation of the condenser; the compressor, condenser and evaporator are arranged in series on the heat exchange circulation pipeline; an electronic expansion valve is provided on the output end of the heat exchange circulation pipeline at the condenser; the evaporator is connected to the oil outlet pipeline, and the evaporator absorbs the heat of the transformer cooling oil in the oil outlet pipeline to realize heat exchange of the transformer cooling oil.

2. A transformer rear end oil cooling system according to claim 1, characterized in that: A door is provided on one side of the upper cabin, and side panels are provided on both sides of the door, and heat dissipation holes are distributed in an array on the side panels; a condenser temperature sensor is provided in the upper cabin; a control panel is provided in the upper cabin, and a room temperature sensor is connected to the control panel, and a touch control screen connected to the control panel is provided on the door of the upper cabin.

3. The transformer rear end oil cooling system according to claim 1, characterized in that: An accumulator is connected in series at the input end of the compressor on the heat exchange circulation pipeline, and an exhaust temperature sensor is provided at the output end of the compressor.

4. The transformer rear end oil cooling system according to claim 1, characterized in that: The output end of the electronic expansion valve is located on the heat exchange circulation pipeline and is provided with an electronic expansion valve outlet temperature sensor.

5. The transformer rear end oil cooling system according to claim 1, characterized in that: A filter is provided on the heat exchange circulation pipeline at the input end of the electronic expansion valve.

6. The transformer rear end oil cooling system according to claim 1, characterized in that: The evaporator is connected to an oil drain pipe.

7. The transformer rear end oil cooling system according to claim 1, characterized in that: Temperature sensors are provided on both the oil inlet pipeline and the oil outlet pipeline.

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