Water cooling system of microwave hot air oxidation furnace

Abstract

A water cooling system of a microwave hot air oxidation furnace comprises a microwave power supply, a microwave generator and a positive pressure furnace door, and further comprises a water tank and a cooling tower. A submerged pump is mounted above the water tank; a first water sinking pipe is connected below the water sinking pump; the lower end of the first sinking pipe is inserted into the water tank; the submerged pump is connected with the brazing plate heat exchanger through a pipeline; the brazing plate heat exchanger is connected with the waterway distribution box through a pipeline; a waterway outlet pipe group and a waterway return port pipe group are arranged on the waterway distribution box; a second sinking pipe is connected below the waterway return pipe group; the second sinking pipe is inserted into the water tank; the brazing plate heat exchanger is connected with the cooling tower through a liquid inlet pipeline and a liquid outlet pipeline. According to the utility model, the microwave power supply, the microwave generator and the positive pressure furnace door can be cooled.

Description

Technical Field

[0001] This utility model relates to the field of carbon fiber oxidation furnace technology, and in particular to a water cooling system for a microwave hot air oxidation furnace. Background Technology

[0002] The production of carbon fiber is a complex process involving high temperature and high energy consumption. Among them, the carbon fiber oxidation furnace is the core equipment in the production line. When the entire line is running, the pre-oxidation furnace group accounts for about 70% of the power consumption, and the furnace temperature can reach up to 300°C. In order to further reduce energy consumption and costs, microwave hot air oxidation furnaces are being explored and developed. The microwave generator and its power supply connected to the furnace body operate at high temperatures, and the surface temperature of the furnace door on the positive pressure side of the oxidation furnace, which has a special structural design, is also high, all of which require cooling. Utility Model Content

[0003] The purpose of this invention is to solve the technical problem of providing a water-cooling system for a microwave hot air oxidation furnace that can cool the microwave power supply, microwave generator, and positive pressure furnace door.

[0004] To solve the above-mentioned technical problems, the technical solution of the water cooling system for a microwave hot air oxidation furnace of this utility model is as follows:

[0005] The system includes a microwave power supply, a microwave generator, and a positive pressure furnace door, as well as a water tank and a cooling tower. A submersible pump is installed above the water tank. A first submersible pipe is connected below the submersible pump. The lower end of the first submersible pipe is inserted into the water tank. The submersible pump is connected to a brazing heat exchanger via a pipe. The brazing heat exchanger is connected to a water distribution box via a pipe. The water distribution box is equipped with a water outlet pipe assembly and a water return pipe assembly. The water outlet pipe assembly is connected to the liquid inlet of the microwave power supply, the liquid inlet of the microwave generator, and the liquid inlet of the positive pressure furnace door via pipes. The water return pipe assembly is connected to... The pipeline is connected to the liquid outlet of the microwave power supply, the liquid outlet of the microwave generator, and the liquid outlet of the positive pressure furnace door; a second submersible pipe is connected below the water return pipe assembly; the second submersible pipe is inserted into the water tank; the water tank forms loop A with the microwave power supply, the microwave generator, and the positive pressure furnace door through the water distribution box; loop A is filled with coolant; the brazing plate heat exchanger is connected to the cooling tower through the liquid inlet pipe and the liquid outlet pipe, and the brazing plate heat exchanger forms loop B with the cooling tower through the liquid inlet pipe and the liquid outlet pipe; loop B is filled with heat exchange fluid for cooling the coolant.

[0006] The coolant is deionized water; the heat exchange fluid is medium water.

[0007] A filter is installed on the liquid inlet pipe.

[0008] The brazing plate is mounted on the water tank via a support base; the support base is connected to the brazing plate and the support base via bolts.

[0009] An air filter is installed above the water tank to balance the air pressure inside and outside the water tank; a liquid level thermometer is installed on the side of the water tank; and a shock-resistant pressure gauge is also installed on the water distribution box.

[0010] A liquid outlet pipe is installed at the bottom of the water tank; a ball valve is installed on the liquid outlet pipe.

[0011] A handle is installed on the side of the water tank.

[0012] The technical effect achieved by this utility model is as follows: The water tank of the water-cooling system for a microwave hot air oxidation furnace forms a loop A with the microwave power supply, microwave generator, and positive pressure furnace door via a water distribution box. Loop A is filled with coolant. A submersible pump sends the coolant into a brazing heat exchanger, which then sends it into the water distribution box. The water distribution box then distributes the coolant to the microwave power supply, microwave generator, and positive pressure furnace door, thereby cooling the microwave power supply, microwave generator, and positive pressure furnace door. After the coolant cools the microwave power supply, microwave generator, and positive pressure furnace door, the coolant temperature rises and flows back into the water tank. Then, the submersible pump sends the heated coolant into the brazing heat exchanger. By opening the cooling tower, the cooling tower sends the heat exchange fluid into the brazing heat exchanger to exchange heat with the coolant, thereby reducing the coolant temperature and ensuring that the coolant can properly cool the microwave power supply, microwave generator, and positive pressure furnace door. After the heat exchange fluid and coolant have exchanged heat, the heat exchange fluid is sent back to the cooling tower for further cooling, thus completing the cycle. Attached Figure Description

[0013] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0014] Figure 1 This is a perspective view of the water tank of this utility model;

[0015] Figure 2 This is a structural schematic diagram of the water tank of this utility model;

[0016] Figure 3 This is a schematic diagram showing the connection between the waterway outlet pipe assembly and the waterway return pipe assembly.

[0017] Figure 4 It is a structural diagram of the water tank, microwave power supply, microwave generator, positive pressure furnace door, and cooling tower. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings.

[0019] See Figures 1 to 4.

[0020] A microwave hot air oxidation furnace water cooling system includes a microwave power supply 18, a microwave generator 19, and a positive pressure furnace door 20, as well as a water tank 1 and a cooling tower 21. A submersible pump 6 is installed above the water tank 1, and a first submersible pipe 2 is connected below the submersible pump 6, with the lower end of the first submersible pipe 2 inserted into the water tank 1. The submersible pump 6 is connected to a brazing plate heat exchanger 5 via a pipe, and the brazing plate heat exchanger 5 is connected to a water distribution box 7 via a pipe. The water distribution box 7 is equipped with a water outlet pipe assembly 31 and a water return pipe assembly 32. The water outlet pipe assembly 31 is connected to the microwave power supply 18 via pipes. The water inlet is connected to the inlet of the microwave generator 19 and the inlet of the positive pressure furnace door 20. The water return pipe group 32 is connected to the outlet of the microwave power supply 18, the outlet of the microwave generator 19 and the outlet of the positive pressure furnace door 20 through pipes respectively. A second submersible pipe 3 is connected below the water return pipe group 32 and is inserted into the water tank 1. The water tank 1 forms a loop A with the microwave power supply 18, the microwave generator 19 and the positive pressure furnace door 20 through the water distribution box 7. The loop A is filled with coolant. Specifically, the coolant is deionized water.

[0021] In the process of cooling the microwave power supply 18, microwave generator 19, and positive pressure furnace door 20, this utility model first turns on the submersible pump 6. The submersible pump 6 draws deionized water from the water tank 1 through the first submersible pipe 2 and sends it into the brazing plate heat exchanger 5. Then, the brazing plate heat exchanger 5 sends it into the water distribution box 7. The deionized water is distributed through the water distribution box 7 and sent into the microwave power supply 18, microwave generator 19, and positive pressure furnace door 20 through the water outlet pipe group 31. The deionized water performs heat exchange and cooling on the microwave power supply 18, microwave generator 19, and positive pressure furnace door 20 respectively. After the heat exchange and cooling is completed, the temperature of the deionized water rises. The deionized water then flows to the water return pipe group 32 and is sent into the water tank 1 through the second submersible pipe 3 for collection, thus circulating.

[0022] After the deionized water exchanges heat with the microwave power supply 18, microwave generator 19, and positive pressure furnace door 20 respectively, the temperature of the deionized water itself rises. Therefore, a device is needed to cool the deionized water to ensure the normal cooling of the microwave power supply 18, microwave generator 19, and positive pressure furnace door 20. Therefore, the brazing plate heat exchanger 5 of this utility model is connected to the cooling tower 21 through the liquid inlet pipe 15 and the liquid outlet pipe 13 respectively. The brazing plate heat exchanger 5 forms a loop B with the cooling tower 21 through the liquid inlet pipe 15 and the liquid outlet pipe 13. The loop B is filled with heat exchange fluid for cooling the coolant. Specifically, the heat exchange fluid is water. Preferably, a filter 9 is installed on the liquid inlet pipe 15.

[0023] After the deionized water enters the brazing plate heat exchanger 5, the medium water in the cooling tower 21 is sent into the brazing plate heat exchanger 5 through the liquid inlet pipe 15 and exchanges heat with the deionized water, causing the temperature of the deionized water to drop. After the heat exchange is completed, the medium water is sent back to the cooling tower 21 through the liquid outlet pipe 13 for cooling, and the cycle is repeated. The filter 9 is used to filter the ordinary medium water flowing from the cooling tower 21 into the brazing plate heat exchanger 5.

[0024] Specifically, the brazed plate heat exchanger 5 of this utility model is installed on the water tank 1 via a support base 8. The support base 8 is connected to the brazed plate heat exchanger 5 and the support base 8 via bolts. An air filter 10 is installed above the water tank 1 to balance the air pressure inside and outside the water tank 1, ensuring the purity of the air entering the water tank 1. A liquid level thermometer 11 is installed on the side of the water tank 1 to monitor the liquid level and temperature of the deionized water in the water tank 1. A shock-resistant pressure gauge 12 is also installed on the water distribution box 7 to detect the pressure of the deionized water entering the water outlet pipe group.

[0025] Specifically, a liquid outlet pipe is installed at the bottom of water tank 1, and a ball valve 4 is installed on the liquid outlet pipe. The liquid outlet pipe is used to discharge the medium water in water tank 1; a handle 16 is installed on the side of water tank 1.

Claims

1. A water-cooling system for a microwave hot air oxidation furnace, comprising a microwave power supply (18), a microwave generator (19), and a positive pressure furnace door (20), characterized in that: It also includes a water tank (1) and a cooling tower (21); a submersible pump (6) is installed above the water tank (1); a first submersible pipe (2) is connected below the submersible pump (6); the lower end of the first submersible pipe (2) is inserted into the water tank (1); the submersible pump (6) is connected to a brazing heat exchanger (5) through a pipe; the brazing heat exchanger (5) is connected to a water distribution box (7) through a pipe; the water distribution box (7) is provided with a water outlet pipe assembly (31) and a water return pipe assembly (32); the water outlet pipe assembly (31) is connected to the inlet of the microwave power supply (18), the inlet of the microwave generator (19), and the inlet of the positive pressure furnace door (20) through pipes respectively; the water return pipe assembly (32) is connected to the inlet of the microwave power supply (18) through pipes respectively. The liquid outlet, the liquid outlet of the microwave generator (19), and the liquid outlet of the positive pressure furnace door (20) are connected; a second submersible pipe (3) is connected below the water return pipe group (32); the second submersible pipe (3) is inserted into the water tank (1); the water tank (1) forms a loop A with the microwave power supply (18), the microwave generator (19), and the positive pressure furnace door (20) through the water distribution box (7); the loop A is filled with coolant; the brazed plate heat exchanger (5) is connected to the cooling tower (21) through the liquid inlet pipe (15) and the liquid outlet pipe (13), and the brazed plate heat exchanger (5) forms a loop B with the cooling tower (21) through the liquid inlet pipe (15) and the liquid outlet pipe (13); the loop B is filled with heat exchange fluid for cooling the coolant.

2. The water-cooling system for a microwave hot air oxidation furnace according to claim 1, characterized in that: The coolant is deionized water; the heat exchange fluid is medium water.

3. The water-cooling system for a microwave hot air oxidation furnace according to claim 1, characterized in that: A filter (9) is installed on the liquid inlet pipe (15).

4. The water-cooling system for a microwave hot air oxidation furnace according to claim 1, characterized in that: The brazing plate (5) is mounted on the water tank (1) via a support base (8); the support base (8) is connected to the brazing plate (5) and the support base (8) respectively via bolts.

5. The water-cooling system for a microwave hot air oxidation furnace according to claim 1, characterized in that: An air filter (10) for balancing the air pressure inside and outside the water tank (1) is installed above the water tank (1); a liquid level thermometer (11) is installed on the side of the water tank (1); and a shock-resistant pressure gauge (12) is also installed on the water distribution box (7).

6. The water-cooling system for a microwave hot air oxidation furnace according to claim 1, characterized in that: A liquid outlet pipe is installed below the water tank (1); a ball valve (4) is installed on the liquid outlet pipe.

7. The water-cooling system for a microwave hot air oxidation furnace according to claim 1, characterized in that: A handle (16) is installed on the side of the water tank (1).

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