CN205194470U - It is horizontal to STREAMING transformer cooler - Google Patents

Abstract

The utility model discloses a horizontal convection transformer cooler, which comprises a water exchange tank and oil collection tanks at both ends; an oil baffle plate is arranged between the oil collection tank and the heat exchange tank, and the oil collection tanks at both ends pass through the oil baffle The heat exchange tubes installed between the plates communicate with each other; the left oil collection tank is divided into an upper inlet oil collection tank and a lower outlet oil collection tank through a partition; between the upper end cover of the heat exchange water tank and the heat exchange tubes Equipped with a mesh partition; compared with the traditional vertical placement, the utility model reduces the pressure requirements of the oil pump and water pump, and does not need to overcome the gravity of the transformer oil itself, and the structure and manufacturing process are simple. The round holes of the mesh partition are arranged at intervals, so that the heat exchange tubes are evenly sprayed and cooled, and the heat exchange efficiency is improved.

Description

A horizontal convection transformer cooler

technical field

The utility model belongs to enhanced heat exchange equipment, relates to a power transformer cooler device, belongs to a strong oil water-cooled cooler, and in particular relates to a horizontal convection transformer cooler.

Background technique

The transformer is an extremely important device in the power system. It is widely used in various levels of power grids to change the voltage level and transmit electric energy. Among them, the oil-immersed transformer is the most widely used. In the case of high-load operation, The temperature of transformer oil in oil-immersed transformers rises sharply, and high temperature has great harm to the insulating materials inside the transformer. In a long-term high-temperature environment, the insulating materials will gradually lose their insulation and mechanical properties, greatly reducing the service life of the transformer. Therefore, how to dissipate heat reasonably and effectively and reduce the temperature of transformer oil has become a top priority.

To solve the problem of transformer temperature rise, the commonly used cooling methods are as follows: oil-immersed self-cooling, oil-immersed air-cooled, forced oil circulation air-cooled and forced oil circulation water-cooled. With the rapid development of my country's industry, the demand for power is increasing day by day, and my country's power system is developing in the direction of high voltage and large capacity, which puts forward new requirements for the cooling capacity of transformer coolers. For transformers of 63000kV·A and above, a strong oil-air cooler or a strong oil-water cooler is required. The body of the traditional strong oil air cooler is a group of metal tubes with spiral fins, and there is an oil collection chamber at each end. The oil collection chamber is welded with an oil partition to form a multi-circuit oil circulation. However, this cooling method requires a fan, and the reliability of the fan is poor. Motors, air-cooling control circuits, etc. often fail, the maintenance workload is heavy, and the fan noise is loud. The oil in the traditional strong oil water cooler is composed of a cylindrical water tank. Cooling copper pipes are placed in the tank, and there are partitions along the oil height direction to change the oil flow path. The oil area cannot exchange heat well. In addition, its manufacturing process is complicated, energy consumption is large, and operating cost is high.

Utility model content

In order to overcome the above existing technical problems, the utility model adopts the natural convection of cooling water to realize heat exchange, and proposes a horizontal convection transformer cooler that reduces energy consumption of auxiliary equipment and improves heat exchange capacity. Combined with the accompanying drawings, The technical scheme of the utility model is as follows:

A horizontal convection transformer cooler, including a middle heat exchange tank 17 and oil collection tanks at both ends; the upper and lower sides of the heat exchange tank 17 are respectively provided with an upper end cover 10 with a water inlet 8 and a water outlet 9 The lower end cover 11; an oil baffle is provided between the oil collection tank and the heat exchange water tank 17, and the oil collection tanks at both ends are connected through the heat exchange tubes 7 installed between the oil baffles;

The oil collection tank includes a left oil collection tank at one end of the heat exchange tank 17 and a right oil collection tank 18 at the other end;

The upper and lower parts of the left oil collection tank are respectively provided with an upper end cover 19 of the left oil collection tank with an oil inlet 3 and a lower end cover 20 of the left oil collection tank with an oil outlet 9, and the left oil collection tank is divided by a partition 2 It is the inlet oil collection tank 14 above and the outlet oil collection tank 15 below;

Both sides of the left oil collection tank and the right oil collection tank 18 are closed and sealed by the left end cover 1 and the right end cover 13 .

A mesh partition 6 is provided between the upper end cover 10 of the heat exchange tank 17 and the heat exchange tube 7;

The mesh holes processed on the mesh partition 6 are distributed in a manner of adjacent dislocation arrangement.

Compared with the prior art, the utility model has the beneficial effects of:

1. The utility model adopts horizontal placement, compared with the traditional vertical placement, it reduces the pressure requirements on the oil pump and water pump, and does not need to overcome the gravity of the transformer oil itself.

2. Compared with the traditional cylindrical water tank, the utility model has a rectangular outer profile. The upper end cover, the lower end cover, the left end cover and the right end cover can all be made by stamping and connected by flange or welding. The heat exchange tubes are tightly connected with the left and right oil baffles by means of expansion joints, and the manufacturing process is simple.

3. The mesh partition used in the utility model can be made by stamping, and the round holes are arranged at intervals, so that the heat exchange tubes can be evenly sprayed and cooled, and the heat exchange efficiency can be improved.

Description of drawings

Fig. 1 is a schematic diagram of the internal structure of the utility model;

Fig. 2 is a structural schematic diagram of a mesh partition in the present invention.

In the picture:

1. Left end cover 2. Separator 3. Oil inlet 4. Oil outlet 5. Left oil baffle 6. Mesh partition 7. Heat exchange tube 8. Water inlet 9. Water outlet 10. Upper end cover 11. Lower end Cover 12. Right oil baffle 13. Right end cover 14. Inlet oil collection tank 15. Outlet oil collection tank 16. Upper water collection tank 17. Exchange water tank 18. Right oil collection tank 19. Left oil collection tank upper end cover 20. Left oil collection tank lower end cover 21. The upper end cover of the right oil collection tank. 22. The lower end cover of the right oil collection tank.

detailed description

In order to further illustrate the technical solution of the utility model, in conjunction with the accompanying drawings, the specific implementation of the utility model is set forth as follows:

As shown in Figure 1, the utility model discloses a horizontally placed convective transformer cooler. The oil collection tank 18 on the right side forms again.

An upper end cover 10 is provided above the heat exchange tank 17, and a water inlet 8 is provided on the upper end cover 10; a lower end cover 11 is provided below the water exchange tank 17, and a water outlet 9 is provided on the lower end cover 11. Both sides of the hot water tank 17 are provided with a left oil baffle 5 and a right oil baffle 12, which separate the heat exchange tank 17 from the left oil collection tank and the right oil collection tank 18. , between the left oil baffle plate 5 and the right oil baffle plate 12, across the heat exchange water tank 17, in the way of expansion connection, a plurality of heat exchange tubes 7 are installed horizontally, and the heat exchange tubes 7 will be connected as oil collection tanks With the right oil collection tank 18.

As shown in Figure 2, under the upper end cover 10 of the heat exchange tank 17, a mesh partition 6 is arranged above the heat exchange tube 7, and the round holes on the mesh partition 6 are arranged in an adjacent dislocation, that is, the product pair Alternately distributed, the mesh partition can be made by stamping.

In this embodiment, the length of the mesh partition 6 is L, the width is W, and there are 203 round holes distributed in total, the diameter of the round holes is 0.0125L, the horizontal interval of the round holes is 0.0375L, and the vertical interval is 0.1W. The distance between the round hole and the side is 0.0875L, and the distance between the upper and lower sides is 0.1W.

The left oil collecting tank is composed of a left end cover 1, a left oil baffle plate 5, an upper end cover 19 of the left oil collecting tank, a front end cover of the left oil collecting tank (not shown in the figure), a rear end cover of the left oil collecting tank (not shown in the figure) and a left oil collecting tank The lower end cover 20 of the fuel tank is composed of the upper inlet oil collection tank 14 and the lower outlet oil collection tank 15 by the partition plate 2. An oil inlet 3 is arranged above the upper end cover 19 of the left oil collection tank. An oil outlet 4 is provided.

Described right oil collecting tank 18 is made up of right end cover 13, right oil collecting tank upper end cover 21, right oil collecting tank lower end cover 22, right oil collecting tank upper end cover (not shown in the figure) and right oil collecting tank lower end cover (not shown in the figure).

In the utility model, the left end cover 1, the right end cover 13, the upper end cover 10, the lower end cover 11, the left oil baffle 5, the right oil baffle 12 and the housing (not shown in the figure) are made by stamping or welding, and they They can be directly connected by flanges.

The working process of the present utility model is as follows:

The high-temperature transformer oil enters the inlet oil collection tank 14 through the oil pump through the oil inlet 3, flows into the right oil collection tank 18 through the upper heat exchange tube 7, then enters the outlet oil collection tank 15 through the lower heat exchange tube 7, and finally passes through the oil outlet Port 4 exits the cooler. At the same time, the cooling water flows into the upper water collection tank from the water inlet 8 through the water pump, and pours on the outside of the heat exchange tube 7 after passing through the mesh partition to realize convective heat exchange with the transformer oil with a higher temperature inside the heat exchange tube 7, thereby Cool transformer oil. After the cooling water flows through the outside of the heat exchange tube 7, it flows out of the cooler through the water outlet 9 to complete convective heat exchange.

Claims (3)

1. A horizontal convection transformer cooler, characterized in that: Including the heat exchange tank (17) in the middle and the oil collection tank at both ends; An upper end cover (10) with a water inlet (8) and a lower end cover (11) with a water outlet (9) are arranged on the upper and lower sides of the heat exchange tank (17); An oil baffle is arranged between the oil collection tank and the heat exchange water tank (17), and the oil collection tanks at both ends are connected through the heat exchange tubes (7) installed between the oil baffles; The oil collection tank includes a left oil collection tank at one end of the heat exchange tank (17) and a right oil collection tank (18) at the other end; The upper and lower sides of the left oil collecting tank are respectively provided with an upper end cover (19) of the left oil collecting tank with an oil inlet (3) and a lower end cover (20) of the left oil collecting tank with an oil outlet (9). The oil tank is divided into an upper inlet oil collection tank (14) and a lower outlet oil collection tank (15) by a partition (2); Both sides of the left oil collection tank and the right oil collection tank (18) are closed and sealed by the left end cover (1) and the right end cover (13). 2. A horizontal convection transformer cooler as claimed in claim 1, characterized in that: A mesh partition (6) is provided between the upper end cover (10) of the heat exchange tank (17) and the heat exchange tube (7). 3. A horizontal convection transformer cooler as claimed in claim 2, characterized in that: The mesh holes processed on the mesh partition (6) are distributed in a manner of adjacent dislocation arrangement.