Transformer water cooling system

Abstract

The utility model provides a transformer water cooling system, which relates to the technical field of transformer cooling and comprises a transformer and two oil-air coolers. The transformer is connected with the two oil-air coolers through a pipeline and a three-way pipe; the oil-air coolers are distributed on the two sides of the transformer respectively, each oil-air cooler is connected with one inlet of the three-way pipe through a pipeline, and an outlet of the three-way pipe is connected with the transformer. Buffer parts are arranged at two inlets of the three-way pipe; when the coolers on the two sides need to be used together, the three-way pipe is provided with the first buffering part and the second buffering part, the first buffering part and the second buffering part have the effect of buffering cooling water, flow speed loss caused by opposite flushing of the cooling water can be effectively avoided, and the cooling water is difficult to flow out of the output pipe of the three-way pipe and enter the transformer; and the cooling efficiency of the transformer is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer cooling, in particular to a water-cooling system for transformers. Background Art

[0002] A water-cooling system for transformers is a device that uses cooling water as a cooling medium to cool the transformer. The water-cooling system for transformers mainly consists of an oil-air cooler, a transformer, and connecting pipes connecting the oil-air cooler and the transformer. Usually, two oil-air coolers are arranged on both sides of the transformer and connected to the transformer through the same set of connecting pipes.

[0003] Further, the cooling water is input to the transformer after being converged by a three-way pipe at the input end. However, during the flow of the cooling water, water flow counterflows occur at the three-way pipe, resulting in a slow flow rate of the cooling water from the output end of the three-way pipe to the transformer, and low cooling efficiency of the transformer.

[0004] In view of this, a new technical solution is needed to solve the above technical problems. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a water-cooling system for transformers with high cooling efficiency.

[0006] To achieve the above purpose, the utility model adopts the following technical means:

[0007] The present application provides a water-cooling system for transformers, including a transformer and two oil-air coolers; the transformer is connected to the two oil-air coolers through pipelines and a three-way pipe; the oil-air coolers are respectively distributed on both sides of the transformer, and each oil-air cooler is connected to an inlet of the three-way pipe through a pipeline, and the outlet of the three-way pipe is connected to the transformer; wherein, buffer parts are arranged at both inlets of the three-way pipe.

[0008] Optionally, the transformer is connected to the oil-air cooler through a pipeline to form a circulation loop; the pipeline includes a first input pipe and a second input pipe; the three-way pipe includes: a first buffer part, a second buffer part and a main pipe, the first buffer part is connected to the first input pipe, the second buffer part is connected to the second input pipe, and the main pipe is connected to the transformer.

[0009] Optionally, the first buffer part includes a first straight section, the second buffer part includes a second straight section, the included angle between the first straight section and the main pipe is an acute angle, and the included angle between the straight section and the main pipe is an acute angle.

[0010] Optionally, the first buffer part includes at least one first bending section, and the second buffer part includes at least one second bending section.

[0011] Optionally, one end of the main pipe is provided with an end cover, the end cover is provided with an air vent, and the tee pipe is arranged above the oil-air cooler.

[0012] Optionally, the main pipe includes an extension part extending upward, and the end cover is arranged at one end of the extension part.

[0013] Optionally, the pipeline further includes a water outlet pipe, and both ends of the water outlet pipe are respectively connected to the transformer and the oil-air cooler.

[0014] Optionally, the oil-air cooler includes a plurality of cooler bodies, the cooler bodies are arranged at intervals and are evenly distributed on both sides of the transformer.

[0015] Optionally, the pipeline further includes a connecting pipe, and both ends of the connecting pipe are respectively connected to two oil-air coolers.

[0016] Compared with the prior art, the present utility model brings the following technical effects:

[0017] In the present utility model, the oil-air coolers are distributed on both sides of the transformer, and a tee pipe is arranged at the same time. When the coolers on both sides need to be used together, the tee pipe is provided with a buffer part. The first buffer part and the buffer part have the function of buffering the cooling water, which can effectively avoid the flow rate loss caused by the impact of the cooling water, and it is difficult for the cooling water to flow out of the output pipe of the tee and enter the transformer, thereby improving the cooling efficiency of the transformer.

[0018] In addition, one oil-air cooler is alternately and intermittently turned on to avoid equipment failures caused by the long-term operation of a single oil-air cooler. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a schematic diagram of a water-cooling system for a transformer according to some embodiments of the present application;

[0021] Figure 2 For Figure 1 A schematic diagram of a water-cooling system for a transformer from another perspective as shown;

[0022] Figure 3 For Figure 1 A schematic diagram of the structure of a tee pipe in a water-cooling system for a transformer as shown;

[0023] Description of Main Component Symbols:

[0024] 1 - Transformer;

[0025] 2 - Oil - air cooler; 21 - Cooler main body; 22 - Output end; 23 - Input end;

[0026] 3 - Pipeline; 31 - First input pipe; 32 - Second input pipe; 33 - Water outlet pipe; 34 - Connecting pipe;

[0027] 4 - Three - way pipe; 41 - Main pipe; 411 - End cover; 412 - Extension part; 413 - Air vent; 42 - First buffer part; 43 - Second buffer part. Detailed Embodiment

[0028] The technical solution of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the scope of protection of the present utility model.

[0029] In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other. The embodiments of the present utility model are described in detail below, and the examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end.

[0030] Please refer to Figure 1 and Figure 2 , a specific embodiment of the present utility model provides a water - cooling system for a transformer.

[0031] A water - cooling system for a transformer includes: a transformer 1 and two oil - air coolers 2; the transformer 1 is connected to the two oil - air coolers 2 through a pipeline 3 and a three - way pipe 4; the oil - air coolers 2 are respectively distributed on both sides of the transformer 1, and each oil - air cooler 2 is connected to an inlet of the three - way pipe 4 through a pipeline 3, and the outlet of the three - way pipe 4 is connected to the transformer 1.

[0032] Among them, buffer parts are provided at both inlets of the three - way pipe 4.

[0033] The three - way pipe 4 is provided with buffer parts, and the buffer parts have the function of buffering the cooling water, which can effectively avoid the flow velocity loss caused by the impact of the cooling water, and it is difficult for the cooling water to flow out of the output pipe of the three - way pipe 4 and enter the transformer 1, improving the cooling efficiency of the transformer 1.

[0034] The pipeline 3 includes: a first input pipe 31 and a second input pipe 32; the first input pipe 31 is connected to the inlet of the tee 4, and the second input pipe 32 is connected to the other inlet of the tee 4.

[0035] Please refer to Figure 1 and Figure 3 , the tee 4 includes: a main pipe 41, a first buffer part 42 and a second buffer part 43;

[0036] The first input pipe 31 is connected to the right side of the tee 4, the second input pipe 32 is connected to the left side of the tee 4, the first input pipe 31 is fixedly connected to the first buffer part 42 of the tee 4, the second input pipe 32 is fixedly connected to the second buffer part 43 of the tee 4, and at the same time, the main pipe 41 of the tee 4 is fixedly connected to the top of the transformer 1.

[0037] The oil-air cooler 2 has two modes: alternating use and simultaneous use.

[0038] When the simultaneous use mode is adopted: the tee 4 is provided with a first buffer part 42 and a second buffer part 43. The first buffer part 42 and the second buffer part 43 have the function of buffering the cooling water, which can effectively avoid the flow rate loss caused by the impact of the cooling water. It is difficult for the cooling water to flow out of the output pipe of the tee 4 and enter the transformer 1, thus improving the cooling efficiency of the transformer 1.

[0039] When the alternating use mode is adopted: one oil-air cooler 2 can be intermittently turned on to avoid equipment failure caused by the long-term operation of a single oil-air cooler 2.

[0040] Exemplarily, the tee 4 has a first buffer part 42 and a second buffer part 43. The specific structures of the first buffer part 42 and the second buffer part 43 may include: a bent section or at least one straight section.

[0041] Specifically, the first buffer part 42 includes a first straight section, the second buffer part 43 includes a second straight section, the angle between the first straight section and the main pipe is an acute angle, and the angle between the second straight section and the main pipe is an acute angle. Further, the angle between the central axis of the first buffer part and the central axis of the main pipe is an acute angle, and the angle between the central axis of the second buffer part and the central axis of the main pipe is an acute angle.

[0042] For example, in the Y-shaped tee of this embodiment, the specific structures of the first buffer part 42 and the second buffer part 43 are two straight sections.

[0043] Specifically, the first buffer part 42 includes at least one first bent section, and the second buffer part 43 includes at least one second bent section.

[0044] For example, the tee 4 of this embodiment can also be a U-shaped tee or a W-shaped tee.

[0045] Please refer toFigure 1 and Figure 2 On the left and right sides of the transformer 1, two oil-air coolers 2 are respectively provided, and the oil-air coolers 2 on both sides are symmetrically and evenly distributed with the transformer 1 as the center; the transformer 1 and the oil-air coolers 2 are connected to each other through pipelines 3 to form a circulation loop.

[0046] During the working time of the transformer 1, continuous refrigeration is required. In the traditional technology, only one oil-air cooler 2 operates all the time. When maintenance needs to be carried out on the cooling mechanism, the transformer 1 needs to stop working, resulting in low working efficiency.

[0047] This application uses two oil-air coolers and alternately uses the two oil-air coolers 2. When the staff maintains one of the oil-air coolers 2, the other oil-air cooler 2 can perform cooling. In this way, the water cooling system of the transformer does not need to stop, and the working efficiency is high.

[0048] Exemplarily, the two oil-air coolers 2 are arranged on the left side and the right side of the transformer 1. Of course, the positional layout of the transformer 1 and the oil-air cooler is not limited to this specific form. For example, the two oil-air coolers 2 can also be arranged on the front side and the right side of the transformer 1.

[0049] Please refer to Figure 1 and Figure 3 , the main pipe 41 includes: an end cover 411 and an extension part 412.

[0050] The part where the end of the main pipe 41 far from the transformer 1 extends is the extension part 412. An end cover 411 for closing the extension part 412 is provided on the extension part 412. The end cover 411 is provided with an air vent 413, and the tee pipe 4 is configured to be higher than the oil-air cooler 2.

[0051] An air vent 413 is provided at the top of the main pipe 41. When the tee pipe 4 is at the highest point of the two oil-air coolers 2, air may not be exhausted and remain at the high point after the cooling water is injected, avoiding air being involved in the winding to form voids, resulting in light gas alarm or abnormal partial discharge.

[0052] It should be added that only when the tee pipe 4 is at the top of the transformer 1 and at the highest point of the oil-air cooler 2, the air vent 413 needs to be provided. If it is on other sides of the transformer 1, the end cover 411 is in a completely closed state.

[0053] In another embodiment, the main pipe 41 has an opening above the connection of the tee pipe 4, and the end cover 411 is opened at this opening. That is to say, the extension part 412 is not provided on this main pipe.

[0054] Please refer to Figure 1 and Figure 2, the oil-air cooler 2 includes: a cooler main body 21, an output end 22 and an input end 23; the connection assembly 3 further includes: a water outlet pipe 33 and a connecting pipe 34.

[0055] Two oil-air coolers 2 are distributed on both sides of the transformer 1. Four cooler main bodies 21 are placed on each side. The cooler main bodies 21 on each side are spaced apart from each other. The output end 22 is arranged at the top of the cooler main body 21. The outer end of the output end 22 is fixedly connected to the cooler main body 21, and the other ends are respectively vertically connected to the first input pipe 31 and the second input pipe 32. The input end 23 is arranged at the bottom of the cooler main body 21 and is arranged in parallel with the output end 22; the connecting pipe 34 is connected to the input ends 23 of the oil-air coolers 2 on both sides and forms a return path together with the water outlet pipe 33;

[0056] In addition, the number of cooler main bodies 21 can be adjusted, but it is necessary to keep the two sides consistent to keep the pressure of the cooling water output on both sides consistent.

[0057] Obviously, the above embodiments are only examples for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or modifications derived therefrom still fall within the protection scope of the creative utility model.

Claims

1. A transformer water cooling system, characterized in that: It includes a transformer and two oil-air coolers; the transformer is connected to the two oil-air coolers through pipelines and tee pipes; the oil-air coolers are respectively distributed on both sides of the transformer, each of the oil-air coolers is connected to an inlet of the tee pipe through a pipeline, and the outlet of the tee pipe is connected to the transformer; Wherein, buffer parts are provided at the two inlets of the three-way pipe.

2. A transformer water cooling system according to claim 1, characterized in that: The transformer is connected to the oil-air cooler through a pipeline to form a circulation loop; The pipeline includes a first input pipe and a second input pipe; The three-way pipe includes: a first buffer part, a second buffer part and a main pipe, the first buffer part is connected to the first input pipe, the second buffer part is connected to the second input pipe, and the main pipe is connected to the transformer.

3. A transformer water cooling system according to claim 2, characterized in that: The first buffer portion includes a first straight line segment, and the second buffer portion includes a second straight line segment. The angle between the first straight line segment and the main pipe is an acute angle, and the angle between the second straight line segment and the main pipe is an acute angle.

4. A transformer water cooling system according to claim 3, characterized in that: The first buffer portion includes at least one first curved segment, and the second buffer portion includes at least one second curved segment.

5. A transformer water cooling system according to claim 2, characterized in that: An end cover is provided at one end of the main pipe, and an air release hole is provided on the end cover. The three-way pipe is arranged higher than the oil-air cooler.

6. A transformer water cooling system according to claim 5, characterized in that: The main pipe comprises an extending portion extending upward, and the end cover is arranged at one end of the extending portion.

7. A transformer water cooling system according to claim 1, characterized in that: The pipeline also includes a water outlet pipe, and two ends of the water outlet pipe are respectively connected to the transformer and the oil-air cooler.

8. A transformer water cooling system according to claim 1, characterized in that: The oil-air cooler comprises a plurality of cooler bodies, which are arranged at intervals and evenly distributed on both sides of the transformer.

9. A transformer water cooling system according to claim 6, characterized in that: The pipeline also includes a connecting pipe, and both ends of the connecting pipe are respectively connected to two oil-air coolers.

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