Anti-oxidation enameled wire annealing cooling device

Abstract

The utility model discloses an anti-oxidation enamelled wire annealing and cooling device, which comprises a horizontally arranged cooling pipe (1), two ends of the cooling pipe (1) are respectively provided with a feed port (3) connected with an annealing furnace (2) and a discharge port (4) far away from the annealing furnace (2), and the discharge port (4) is provided with a water curtain spraying device (5) for sealing the end part of the cooling pipe (1). An atomizer (6) with an opening facing the bare wire and deviating from the water curtain spraying device (5) is arranged in the cooling pipe (1), and a gas channel (7) used for balancing gas pressure at the two ends of the atomizer (6) is arranged in the cooling pipe (1). A large amount of water vapor can be generated, bare wires are prevented from being greatly oxidized, and reliability is good.

Description

Technical Field

[0001] The utility model relates to a cooling device, in particular to an anti-oxidation enameled wire annealing cooling device. Background Art

[0002] Enameled wire is a type of electrical wire, made by stretching conductive metal wires such as copper or aluminum and then insulating them. It is commonly used in electrical equipment such as motors and transformers. Annealing is a crucial step in enameled wire production. During the wire drawing and winding process, enameled wire undergoes processing that alters its properties, necessitating annealing. Annealing involves heating the material to a certain temperature for a specified period of time before cooling it to soften the material, eliminate internal stresses, and improve mechanical properties.

[0003] However, some bare wires, such as copper wire, are very easy to oxidize after annealing and softening, and the oxide layer will cause significantly poor adhesion of the paint film. Therefore, the solution for most annealing furnaces now is to set water curtains or steam generating equipment at both ends of the furnace mouth to reduce the oxygen content in the annealing furnace and avoid surface oxidation of the bare wire of the enameled wire, which affects the quality of the enameled wire. For example, the patent with application number 202023199365.1 discloses a vertical annealing device for enameled wire, which generates steam by contacting the high-temperature conductor with the water in the cooling water tank during the annealing of the bare wire, and allows the steam to enter the annealing furnace directly, thereby ensuring that the bare wire after annealing will not come into contact with the outside air, avoiding oxidation of the bare wire surface. However, in the process of contact between the bare wire and the cooling water tank, due to the good thermal conductivity of the bare wire, the temperature of the bare wire has dropped before the bare wire directly contacts the water in the cooling water tank, and it cannot be ensured that the bare wire and water can generate more steam, resulting in poor reliability. Utility Model Content

[0004] The utility model aims to provide an anti-oxidation enameled wire annealing cooling device, which can generate a large amount of water vapor to prevent the bare wire from being oxidized in large quantities and has good reliability.

[0005] The technical solution of the utility model is: an anti-oxidation enameled wire annealing cooling device, comprising a horizontally arranged cooling pipe, wherein both ends of the cooling pipe are respectively provided with a feed port connected to the annealing furnace and a discharge port away from the annealing furnace, a water curtain spray device that closes the end of the cooling pipe is provided at the discharge port, an atomizer is provided in the cooling pipe, the opening direction of which is toward the bare wire and away from the water curtain spray device, a gas channel for balancing the air pressure at both ends of the atomizer is provided in the cooling pipe, a heat exchanger is provided on one side of the atomizer, and conduits for connecting the atomizer and the annealing furnace are provided at both ends of the gas flow channel of the heat exchanger.

[0006] In the aforementioned anti-oxidation enameled wire annealing cooling device, the water curtain spray device includes a water tank arranged outside the annealing furnace, one side of the water tank is connected to the liquid flow channel of the heat exchanger through a connecting pipe, and one side of the liquid flow channel is provided with an infusion pipe connected to the spray head at the discharge end.

[0007] In the aforementioned anti-oxidation enameled wire annealing cooling device, the gas channel includes an outlet channel whose outlet end is located between the water curtain spray device and the atomizer, and an air inlet channel connected to the atomizer side conduit is provided at the other end of the horizontal channel.

[0008] Compared with the prior art, the present invention provides a cooling pipe and seals the cooling pipe by providing a water curtain spray device, thereby reducing the entry of oxygen into the cooling pipe and the annealing furnace, and uses an atomizer to generate water mist that contacts the heated enameled wire bare wire to generate water vapor, thereby reducing the possibility of bare wire oxidation. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural diagram of the present utility model.

[0010] The marks in the accompanying drawings are: 1-cooling pipe, 2-annealing furnace, 3-feed port, 4-discharge port, 5-water curtain spray device, 6-atomizer, 7-gas channel, 8-water tank, 9-connecting pipe, 10-spray head, 12-gas outlet channel, 13-gas inlet channel, 14-heat exchanger, 15-conduit, 16-liquid flow channel, 17-gas flow channel, 18-infusion pipe. DETAILED DESCRIPTION

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0012] Embodiment. An anti-oxidation enameled wire annealing cooling device, comprising: Figure 1 As shown, it includes a horizontally arranged cooling pipe 1, and the two ends of the cooling pipe 1 are respectively provided with a feed port 3 connected to the annealing furnace 2 and a discharge port 4 away from the annealing furnace 2, and a water curtain spray device 5 is provided at the discharge port 4 to close the end of the cooling pipe 1. An atomizer 6 is provided in the cooling pipe 1, and the opening direction is toward the bare wire and away from the water curtain spray device 5. A gas channel 7 for balancing the air pressure at both ends of the atomizer 6 is provided in the cooling pipe 1. A heat exchanger 14 is provided on one side of the atomizer 6, and a conduit 15 for connecting the atomizer 6 and the annealing furnace 2 is provided at both ends of the gas flow channel 17 of the heat exchanger 14.

[0013] The water curtain spray device 5 includes a water tank 8 arranged outside the annealing furnace 2. One side of the water tank 8 is connected to the liquid flow channel 16 of the heat exchanger 14 through a connecting pipe 9. One side of the liquid flow channel 16 is provided with a liquid infusion pipe 18 connected to the spray head 10 at the discharge port 4.

[0014] The gas channel 7 includes an outlet channel 12 whose outlet end is located between the water curtain spray device 5 and the atomizer 6 , and an inlet channel 13 connected to the side conduit 15 of the atomizer 6 is provided at the other end of the horizontal channel 11 .

[0015] Principle of the present utility model: The inlet of the annealing furnace 2 of the present application is located at the upper end of the annealing furnace, the outlet of the annealing furnace 2 is located on the side wall of the lower end of the annealing furnace, and the feed port 3 of the cooling tube 1 is connected to the outlet of the annealing furnace 2. The bare wire of the enameled wire after annealing will enter the cooling tube 1 from the feed port of the cooling tube 1. A water curtain spray device 5 is provided at the discharge port 4 end of the cooling tube 1 to seal the cooling tube 1, reduce the air entering the cooling tube, and reduce the possibility of the bare wire being oxidized. In addition, an atomizer 6 is provided in the cooling tube 1, with the opening direction facing the bare wire and away from the water curtain spray device 5. The water droplets generated by the atomizer 6 are small in size and easily vaporize into water vapor when in contact with the high-temperature bare wire. In the process of continuing to move along the cooling tube 1, they will be gradually heated, so that the temperature of the water vapor that finally enters the annealing furnace 2 is close to the temperature of the annealing furnace, so as to avoid the water vapor affecting the annealing process of the bare wire. Due to the presence of water vapor, the possibility of oxidation of the bare wire can be reduced, and the quality of the bare wire can be better. The gas entering the air inlet of the atomizer comes from the annealing furnace 2 and is obtained through heat exchange through the heat exchanger 14. The oxygen content is low, which can prevent a large amount of external air from entering the cooling pipe 1 during the atomization of water by the atomizer. The liquid sprayed from the water curtain spray device 5 can be preheated through the heat exchanger 14 to prevent the temperature of the bare wire in the cooling pipe 1 from dropping suddenly and affecting the vaporization effect. The heat exchanger uses an existing heat exchanger with a pump. Since the gas and liquid sprayed from the atomizer have a certain initial velocity, it will drive the gas in the cooling pipe to move from the discharge port 4 to the feed port 3, resulting in a lower air pressure at the discharge port 4 end of the cooling pipe 1. At this time, the air pressure is kept balanced under the action of the gas channel 7 to avoid affecting the isolation effect of the water curtain spray device 5.

Claims

1. An anti-oxidation enameled wire annealing and cooling device, characterized by: The invention comprises a horizontally arranged cooling pipe (1), wherein both ends of the cooling pipe (1) are respectively provided with a feed port (3) connected to an annealing furnace (2) and a discharge port (4) away from the annealing furnace (2), a water curtain spray device (5) is provided at the discharge port (4) for sealing the end of the cooling pipe (1), an atomizer (6) is provided in the cooling pipe (1), the opening direction of which is toward the bare wire and away from the water curtain spray device (5), a gas channel (7) for balancing the air pressure at both ends of the atomizer (6) is provided in the cooling pipe (1), a heat exchanger (14) is provided on one side of the atomizer (6), and a conduit (15) for connecting the atomizer (6) and the annealing furnace (2) is provided at both ends of the gas flow channel (17) of the heat exchanger (14).

2. The anti-oxidation enameled wire annealing and cooling device according to claim 1, characterized in that: The water curtain spraying device (5) includes a water tank (8) arranged outside the annealing furnace (2), one side of the water tank (8) is connected to the liquid flow channel (16) of the heat exchanger (14) through a connecting pipe (9), and one side of the liquid flow channel (16) is provided with a liquid infusion pipe (18) connected to the spray head (10) at the end of the discharge port (4).

3. The anti-oxidation enameled wire annealing and cooling device according to claim 1, characterized in that: The gas channel (7) includes an outlet channel (12) whose outlet end is located between the water curtain spray device (5) and the atomizer (6), and an inlet channel (13) connected to the side conduit (15) of the atomizer (6) is provided at the other end of the horizontal channel (11).

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