CN201488591U - Strong oil circulating air cooler - Google Patents

Abstract

The utility model relates to a strong oil circulating air cooler, which comprises a casing and a fan. Multiple rows of cooling pipes are arranged in the casing, the fan is arranged on one side of the cooling pipe, and the cooling The two sides of the tube are fixed on the housing through the heat dissipation pipe flower plate, and in the space between the heat dissipation pipe flower plate and one side of the housing, a partition is arranged vertically on the heat dissipation pipe flower plate, and the space Separated into an oil inlet chamber and an oil outlet chamber, the oil inlet chamber is connected to the oil inlet, and the oil outlet chamber is connected to the oil outlet. The utility model has the advantages of high heat dissipation efficiency, avoiding the negative pressure state of the strong oil circulating air cooler, improving the working stability of the transformer, and the like.

Description

Strong oil circulating air cooler

technical field

The utility model relates to a strong oil circulating air cooler for large transformers.

Background technique

At present, the temperature of the heat-carrying transformer oil of the transformer 109 is cooled by the forced oil circulation air cooler and returned to the transformer 109 for recycling. As shown in Figure 1, the transformer oil passes through the cooler oil inlet 101 of the forced oil circulating air cooler, the oil chamber 102, and enters the heat dissipation body 104 and the forced air of the heat dissipation fan 103 to generate heat exchange. The chamber 105, the oil outlet 106 of the cooler, and the pressure pump 107 are pressurized and returned to the transformer body 109 through the oil flow relay 108 to complete the heat exchange and circulation process of the transformer oil. Its main defect is: 1, because heat dissipation body 104 is made up of many heat dissipation pipes, for example model YF-250 strong oil circulating air cooler is made up of 146 heat dissipation pipes with inner diameter 17, and its total runner area is inlet and outlet The oil port is 4.2 times that of the oil port, and the oil inlet and outlet are located in the middle of the upper and lower oil chambers of the cooler, so that the heat dissipation pipes on both sides of the cooler flow through no heat-carrying oil, and the local heat dissipation pipes do not participate or seldom participate in heat dissipation , so the cooling efficiency is not good. 2. The oil pump is installed at the outlet of the cooler, and the whole cooler is in a negative pressure state. If there is a slight leakage in the cooler, the light gas relay of the transformer will operate, affecting the work of the transformer, and the leakage point is not easy to find.

Utility model content

The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a strong oil circulating air cooler with high heat dissipation efficiency, which can prevent the strong oil circulating air cooler from being in a negative pressure state and improve the working stability of the transformer. .

In order to solve the above technical problems, the utility model provides a strong oil circulating air cooler, which includes a shell and a fan. There are multiple rows of heat dissipation pipes in the shell, and the fans are arranged at the top of the heat dissipation pipes. One side, the two sides of the radiating pipe are fixed on the housing through the radiating pipe flower plate, and in the space between the heat radiating pipe flower plate and one side of the housing, the vertical heat radiating pipe flower plate is provided with a spacer The plate separates the space into an oil inlet chamber and an oil outlet chamber, the oil inlet chamber is connected with the oil inlet, and the oil outlet chamber is connected with the oil outlet.

In the utility model, an oil inlet pipe is connected outside the oil inlet, and an oil pump is installed on the oil inlet pipe.

In the utility model, an oil outlet pipe is connected outside the oil outlet, and one end of the oil outlet pipe is connected to a transformer.

Because the utility model adopts the above-mentioned technical scheme, it has the following beneficial effects:

1. The cooling efficiency is improved, because the heat dissipation main tube is changed into two processes, the total flow channel area is 1/2 of the original, avoiding the phenomenon that the heat dissipation tubes on both sides have no heat-carrying oil flow, and the length of the heat dissipation channel is twice the original , and the reverse exchange with the forced cooling air to improve the cooling efficiency. After testing, the cooling efficiency of the same transformer and the same cooler is increased by 20% after modification

2. The oil pump is refitted to the inlet of the cooler, and the cooler is in a positive pressure state, which reduces the chance of the transformer light gas relay operating and improves the safe operation performance of the transformer. After the oil pump is pressurized, the oil flow is buffered by the cooler, which reduces the scouring force on the transformer, which is beneficial to the constant magnetic field of the transformer.

Description of drawings

Fig. 1 is the structural representation of prior art;

Fig. 2 is a structural representation of the utility model;

Fig. 3 is a sectional view taken along line A-A of Fig. 2 .

In conjunction with the accompanying drawings, the following reference numerals are marked thereon:

1-shell; 2-fan; 3-radiation pipe; 4-radiation pipe flower plate; 5-upper middle oil chamber;

6-oil inlet chamber; 7-oil outlet chamber; 8-baffle; 9-oil outlet; 10-oil inlet; 11-oil pump;

12-oil flow relay; 13-transformer.

Detailed ways

As shown in Fig. 2 and Fig. 3, the strong oil circulating air cooler of the utility model includes a housing 1 and a fan 2, and a plurality of rows of cooling pipes 3 are arranged in the housing 1, and the two sides of the cooling pipes 3 pass through the cooling pipes. The plate 4 is fixed on the housing 1, and in the space between the heat dissipation pipe flower plate 4 and the housing 1 side, a partition 8 is arranged vertically on the heat dissipation pipe flower plate 4, and the space is separated by the partition 8 and the heat dissipation pipe flower plate 4. It forms a closed oil inlet chamber 6 and an oil outlet chamber 7, wherein the oil inlet chamber 6 is connected to the oil inlet 10, and the oil outlet chamber 7 is connected to the oil outlet 9.

An oil inlet pipe is connected to the outside of the oil inlet 10, an oil flow relay 12 and an oil pump 11 are installed on the oil inlet pipe, and the other end of the oil inlet pipe is connected with the oil outlet of the transformer 13. An oil outlet pipe is connected to the outside of the oil outlet 9 , and the other end of the oil outlet pipe is connected to the transformer 13 .

When in use, the junction flow is as follows, the heat-carrying oil generated by the transformer 13 is pressurized by the oil flow relay 12 and the oil pump 11 through the oil inlet pipe, and then passes through the oil inlet 10, the oil inlet chamber 6, and the upper flow part 3 of the heat dissipation pipe. , to the upper middle oil chamber 5 and then through the lower process part 4 of the cooling pipe, the outflow chamber 7 and the oil outlet 9, and return to the transformer body 13 through the oil outlet pipe.

The utility model has the following advantages:

1. The cooling efficiency is improved, because the cooling body tube is changed into two processes, and the total channel is 1/2 of the original, avoiding the phenomenon that the cooling tubes on both sides do not flow through the heat-carrying oil, and the length of the cooling channel is twice the original, which is the same as Wind reverse exchange, improve cooling efficiency. After testing, the cooling efficiency of the same transformer and the same cooler improved by 20%.

2. The oil pump is refitted to the inlet of the cooler, and the cooler is in a positive pressure state, which reduces the chance of the transformer light gas relay operating and improves the safe operation performance of the transformer. After the oil pump is pressurized, the oil flow is buffered by the cooler, which reduces the scouring force on the transformer, which is beneficial to the constant magnetic field of the transformer.

Finally, it should be noted that: the above embodiments are only used to illustrate the utility model rather than limit the technical solution described in the utility model; therefore, although the description has described the utility model in detail with reference to the above-mentioned various embodiments, Those of ordinary skill in the art should understand that the utility model can still be modified or equivalently replaced; and all technical solutions and improvements that do not depart from the spirit and scope of the utility model should be covered by the claims of the utility model in range.

Claims (3)

1. but device of a forced oil-circulated air-cooled, comprise housing, fan, in described housing, be provided with many row's radiating tubes, described fan is located at a side of described radiating tube, it is characterized in that: the both sides of described radiating tube are fixed on the described housing by the radiating tube card, vertical radiating tube card is provided with dividing plate in the space of described radiating tube card and described housing one side, described space is separated into inlet space and goes out the grease chamber, described inlet space is connected with oil-in, describedly goes out the grease chamber and is connected with oil-out.

2. forced oil-circulated air-cooled according to claim 1 is device but, it is characterized in that: the described oil-in outside is connected with oil inlet pipe, on described oil inlet pipe oil pump is installed.

3. forced oil-circulated air-cooled according to claim 2 is device but, it is characterized in that: the described oil-out outside is connected with flowline, and an end of described flowline is connected to transformer.

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