An ultra-clean ring cooling device for an electric furnace transformer

Abstract

This utility model discloses an ultra-clean circulating cooling device for an electric furnace transformer, comprising an ultra-clean circulating water tank (2) that cooperates with a transformer oil-water cooler (1). A pair of outlet pipes (3) are connected to the ultra-clean circulating water tank (2), and the outlet pipes (3) are respectively connected to two transformer oil-water coolers (1). The transformer oil-water coolers (1) are then connected to a pair of plate heat exchangers (4) via pipes. The outlets of the plate heat exchangers (4) are connected to the ultra-clean circulating water tank (2) via return pipes (5). The advantage of this utility model is that it can eliminate water blockage in the oil-water cooler, ensure the heat exchange efficiency of the transformer oil-water cooler, thereby maintaining the normal operation of the cooler and preventing excessively high transformer oil and winding temperatures.

Description

Technical Field

[0001] This utility model belongs to the field of metallurgical technology, and in particular relates to an ultra-clean ring cooling device for electric furnace transformers. Background Technology

[0002] To ensure the normal operation of the transformer, the transformer oil and windings need to be adequately cooled. In particular, the transformer oil and windings heat up quickly when the transformer is working in hot weather, requiring the transformer's oil-water cooler to have high heat exchange efficiency.

[0003] However, the main problem at present is that the cooling medium of the oil-water cooler is the equipment water. As the usage time increases, the water circuit of the oil-water cooler will be blocked by scale, resulting in poor heat exchange efficiency and increased transformer oil temperature and winding temperature. Utility Model Content

[0004] The purpose of this invention is to solve the problems of scale buildup and blockage in the water circuit of existing oil-water coolers and poor heat exchange efficiency. It provides an ultra-clean ring cooling device for circuit transformers, which can eliminate blockage in the water circuit of oil-water coolers, ensure the heat exchange efficiency of transformer oil-water coolers, thereby maintaining the normal operation of the cooler and preventing the transformer oil temperature and winding temperature from becoming too high.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An ultra-clean circulating cooling device for an electric furnace transformer includes an ultra-clean circulating water tank that works in conjunction with a transformer oil-water cooler. A pair of outlet pipes are connected to the ultra-clean circulating water tank, and the outlet pipes are then connected to two transformer oil-water coolers respectively. The transformer oil-water coolers are then connected to a pair of plate heat exchangers through pipes, and the outlets of the plate heat exchangers are connected to the ultra-clean circulating water tank through return pipes.

[0007] Furthermore, the transformer oil-water cooler includes oil-water cooler one and oil-water cooler two, and the water outlet pipe includes branch pipe one and branch pipe two. Branch pipe one is connected to ultra-clean circulating water supply pump one, and branch pipe two is connected to ultra-clean circulating water supply pump two. Branch pipe one and branch pipe two are respectively connected to the main pipe.

[0008] Furthermore, the main pipe is connected to a pair of parallel branch pipes three and four, respectively. Branch pipe three is connected to the inlet of oil-water cooler one, and branch pipe four is connected to the inlet of oil-water cooler two.

[0009] Furthermore, the plate heat exchanger includes plate heat exchanger one and plate heat exchanger two. Plate heat exchanger one is provided with an ultra-clean circulating water inlet, an ultra-clean circulating water outlet, an equipment water inlet, and an equipment water outlet. The outlet of the transformer oil-water cooler is connected to the ultra-clean circulating water inlet through a pipe, and the ultra-clean circulating water outlet is connected to the ultra-clean circulating water tank through a return pipe. The electric furnace equipment water inlet pipe is connected to the equipment water inlet, and the equipment water outlet is connected to the electric furnace equipment water return pipe. The electric furnace equipment water and the ultra-clean circulating water exchange heat in the plate heat exchanger.

[0010] Furthermore, the configuration of the second plate replacement is the same as that of the first plate replacement.

[0011] Furthermore, all of the following pipes are DN150 stainless steel pipes: branch pipe 1, branch pipe 2, branch pipe 3, branch pipe 4, return pipe, electric furnace equipment water inlet pipe, and electric furnace equipment water return pipe.

[0012] Furthermore, the inlet water temperature of the ultra-clean circulating water inlet and outlet plate heat exchanger is 55°C, and the outlet water temperature is 35°C.

[0013] Furthermore, the inlet water temperature of the plate heat exchanger for the electric furnace equipment is 30°C and the outlet water temperature is 45°C.

[0014] Compared with the prior art, the advantages of the technical solution of this utility model are as follows:

[0015] (1) The device of this utility model can eliminate the problem of blockage of the cooling medium water circuit in the oil-water cooler and ensure the heat exchange efficiency of the oil-water cooler.

[0016] (2) In the device of this utility model, the two plate heat exchangers for ultra-clean circulating water cooling are one in use and one on standby, which can be replaced online without affecting the use of the transformer and improving work efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the process of the ultra-clean ring cooling device for electric furnace transformers according to this utility model. Detailed Implementation

[0018] Example

[0019] To make this utility model clearer, the following description further illustrates an ultra-clean ring cooling device for an electric furnace transformer. The specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this utility model.

[0020] See Figure 1 A clean ring cooling device for an electric furnace transformer, characterized in that:

[0021] Includes an ultra-clean circulating water tank 2 that is compatible with the transformer oil-water cooler 1;

[0022] A pair of outlet pipes 3 are connected to the ultra-clean circulating water tank 2. The outlet pipes 3 include branch pipe 1 3a and branch pipe 2 3b. The ultra-clean circulating water supply pump 1 6 is connected to the branch pipe 1 3a, and the ultra-clean circulating water supply pump 2 7 is connected to the branch pipe 2 3b. The branch pipe 1 3a and the branch pipe 2 3b are respectively connected to the main pipe 8.

[0023] The main pipe 8 is connected to a pair of parallel branch pipes 9 and 10. Branch pipe 9 is connected to the inlet of oil-water cooler 1a, and branch pipe 10 is connected to the inlet of oil-water cooler 1b.

[0024] Oil-water cooler 1a and oil-water cooler 1b are connected to a pair of plate heat exchangers 4 via pipes. The plate heat exchangers 4 include plate heat exchanger 1 41 and plate heat exchanger 2 42. Plate heat exchanger 1 41 is provided with an ultra-clean circulating water inlet 4a, an ultra-clean circulating water outlet 4b, an equipment water inlet 4c, and an equipment water outlet 4d. The outlet of transformer oil-water cooler 1 is connected to ultra-clean circulating water inlet 4a via a pipe. Ultra-clean circulating water outlet 4b is connected to ultra-clean circulating water tank 2 via a return pipe 5. Electric furnace equipment water inlet pipe 11 is connected to equipment water inlet 4c. Equipment water outlet 4d is connected to electric furnace equipment water return pipe 12. Electric furnace equipment water and ultra-clean circulating water exchange heat in the plate heat exchangers 4. The configuration of plate heat exchanger 2 42 is the same as that of plate heat exchanger 1 41.

[0025] In this embodiment, the pipeline uses DN150 stainless steel pipe, and the ultra-clean circulating water supply pump is model IS125-160, with performance of: P=22kW, Q=160m. 3 / h, H=32m.

[0026] In this embodiment, the plate heat exchanger is model M15M-130, and two units are installed, one for operation and one for standby. The inlet temperature of the ultra-clean circulating water entering and exiting the plate heat exchanger is 55°C and the outlet temperature is 35°C. The inlet temperature of the electric furnace equipment water entering and exiting the plate heat exchanger is 30°C and the outlet temperature is 45°C.

[0027] This invention equips a 15000L ultra-clean circulating water tank with two ultra-clean circulating water supply pumps. The ultra-clean circulating water is transported through DN150 stainless steel pipes to two transformer oil-water coolers. After exiting the two coolers, the ultra-clean circulating water can be selectively cooled via either plate heat exchanger one or plate heat exchanger two through valve control. The cooled ultra-clean circulating water then flows back to the ultra-clean circulating water tank. Simultaneously, the ultra-clean circulating water can also exchange heat with the electric furnace water within the plate heat exchangers. The electric furnace water inlet pipe is also connected to the main pipe.

[0028] The device of this invention can eliminate the problem of blockage in the cooling medium water circuit of the oil-water cooler and ensure the heat exchange efficiency of the oil-water cooler.

[0029] In addition to the embodiments described above, this utility model may have other implementations. All technical solutions formed by equivalent substitution or equivalent transformation fall within the protection scope claimed by this utility model.

Claims

1. A clean ring cooling device for an electric furnace transformer, characterized in that: It includes an ultra-clean circulating water tank (2) that works in conjunction with a transformer oil-water cooler (1). A pair of outlet pipes (3) are connected to the ultra-clean circulating water tank (2). The outlet pipes (3) are then connected to two transformer oil-water coolers (1) respectively. The transformer oil-water coolers (1) are then connected to a pair of plate heat exchangers (4) through pipes. The outlet of the plate heat exchangers (4) is connected to the ultra-clean circulating water tank (2) through a return pipe (5).

2. The ultra-clean ring cooling device for electric furnace transformers according to claim 1, characterized in that: The transformer oil-water cooler (1) includes an oil-water cooler one (1a) and an oil-water cooler two (1b). The water outlet pipe (3) includes a branch pipe one (3a) and a branch pipe two (3b). A first ultra-clean circulating water supply pump one (6) is connected to the branch pipe one (3a), and a second ultra-clean circulating water supply pump two (7) is connected to the branch pipe two (3b). The branch pipe one (3a) and the branch pipe two (3b) are respectively connected to the main pipe (8).

3. The ultra-clean ring cooling device for electric furnace transformers according to claim 2, characterized in that: The main pipe (8) is connected to a pair of parallel branch pipes three (9) and four (10). Branch pipe three (9) is connected to the inlet of oil-water cooler one (1a), and branch pipe four (10) is connected to the inlet of oil-water cooler two (1b).

4. The ultra-clean ring cooling device for electric furnace transformers according to any one of claims 1 to 3, characterized in that: The plate heat exchanger (4) includes a first plate heat exchanger (41) and a second plate heat exchanger (42). The first plate heat exchanger (41) is provided with an ultra-clean circulating water inlet (4a), an ultra-clean circulating water outlet (4b), an equipment water inlet (4c) and an equipment water outlet (4d). The outlet of the transformer oil-water cooler (1) is connected to the ultra-clean circulating water inlet (4a) through a pipe. The ultra-clean circulating water outlet (4b) is then connected to the ultra-clean circulating water tank (2) through a return pipe (5). The electric furnace equipment water inlet pipe (11) is connected to the equipment water inlet (4c). The equipment water outlet (4d) is connected to the electric furnace equipment water return pipe (12). The electric furnace equipment water and the ultra-clean circulating water exchange heat in the plate heat exchanger.

5. The ultra-clean ring cooling device for electric furnace transformers according to claim 4, characterized in that: The configuration of the second plate changer (42) is the same as that of the first plate changer (41).

6. The ultra-clean ring cooling device for electric furnace transformers according to claim 2, characterized in that: The branch pipe 1 (3a), branch pipe 2 (3b), branch pipe 3 (9), branch pipe 4 (10), return pipe (5), electric furnace equipment water inlet pipe (11) and electric furnace equipment water return pipe (12) are all DN150 stainless steel pipes.

7. The ultra-clean ring cooling device for electric furnace transformers according to claim 4, characterized in that: The inlet water temperature of the ultra-clean circulating water inlet and outlet plate heat exchanger (4) is 55℃ and the outlet water temperature is 35℃.

8. The ultra-clean ring cooling device for electric furnace transformers according to claim 7, characterized in that: The inlet water temperature of the electric furnace equipment water inlet and outlet plate heat exchanger (4) is 30℃ and the outlet water temperature is 45℃.

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