Pre-oxidation furnace with pressure monitoring structure

Abstract

The utility model relates to a pre-oxidation furnace with a pressure monitoring structure, which is applied to the field of carbon fiber product production and comprises an inlet furnace body, a first exhaust furnace body arranged on the right side of the inlet furnace body, a main furnace body arranged on the right side of the first exhaust furnace body, a second exhaust furnace body arranged on the right side of the main furnace body and an outlet furnace body arranged on the right side of the second exhaust furnace body. Flange plates are fixedly connected to the left ends and the right ends of the inlet furnace body, the first exhaust furnace body, the main furnace body, the second exhaust furnace body and the outlet furnace body, every two adjacent flange plates are fixedly connected through bolts, a heat conduction plate is fixedly connected to the lower end of the main furnace body, and an electromagnetic coil is fixedly connected to the bottom of the heat conduction plate. The pre-oxidation treatment is realized, the production efficiency is improved, the energy is saved, the production cost is reduced, meanwhile, the operation is simpler and more convenient, an operator does not need complex operation procedures and technical requirements, and the operation difficulty and the safety risk are reduced.

Description

Technical Field

[0001] The utility model relates to a pre-oxidation furnace, in particular to a pre-oxidation furnace with a pressure monitoring structure which is applied to the field of carbon fiber product production. Background Art

[0002] In the carbon fiber production process, the raw materials need to be placed in a pre-oxidation furnace with good pressure stabilization effect and heated to 200~300℃ in air to remove impurities and volatiles in the raw materials and to cause oxidation reaction of the raw materials to obtain oxidized fibers.

[0003] Traditional carbon fiber pre-oxidation furnaces usually use heated gas to perform pre-oxidation treatment, but there are problems such as uneven temperature and unstable pre-oxidation effect, which makes the pre-oxidation furnace prone to unbalanced pressure differences in the furnace, thereby increasing the risk of accidents, increasing the amount of manual production physical labor, and increasing the difficulty of operation and safety risks. Utility Model Content

[0004] In view of the above-mentioned prior art, the technical problem to be solved by the utility model is that pre-oxidation treatment is carried out by heating gas, which has problems such as uneven temperature and unstable pre-oxidation effect, which makes it easy for the pre-oxidation furnace to have an unbalanced pressure difference in the furnace.

[0005] In order to solve the above problems, the utility model provides a pre-oxidation furnace with a pressure monitoring structure, including an inlet furnace body, an exhaust furnace body one is arranged on the right side of the inlet furnace body, a main furnace body is arranged on the right side of the exhaust furnace body one, an exhaust furnace body two is arranged on the right side of the main furnace body, and an outlet furnace body is arranged on the right side of the exhaust furnace body two, the inlet furnace body, the exhaust furnace body one, the main furnace body, the exhaust furnace body two and the left and right ends of the outlet furnace body are fixedly connected with flanges, two adjacent flanges are fixedly connected by bolts, the lower end of the main furnace body is fixedly connected with a heat conduction plate, the bottom of the heat conduction plate is fixedly connected with an electromagnetic coil, the upper end of the main furnace body is respectively fixedly installed with a temperature sensor and a pressure sensor, the outer ring of the outlet furnace body is provided with a jacket frame, a plurality of reinforcing columns are fixedly penetrated on the surface of the jacket frame, the inner ends of the reinforcing columns are fixedly connected to the surface of the outlet furnace body, and the upper and lower ends of the jacket frame are fixedly connected with cold water pipes.

[0006] In the above-mentioned pre-oxidation furnace with a pressure monitoring structure, uniform temperature and rapid pre-oxidation treatment are achieved by electromagnetic heating, and the pressure in the furnace is monitored at the same time, so as to facilitate timely handling of pressure differences in the furnace.

[0007] As a further improvement of the present application, the upper ends of the exhaust furnace body 1 and the exhaust furnace body 2 are both rectangular parallelepiped, the middle parts are both isosceles trapezoidal, and the lower ends are both cubes.

[0008] As a further improvement of the present application, the main furnace body is composed of two rectangular blocks of different sizes, and the longitudinal section of the heat conducting plate is L-shaped.

[0009] As a further improvement of the present application, a gap is left between the jacket frame and the outlet furnace body, and the corresponding ends of the two cold water pipes are both connected to the jacket frame.

[0010] As another improvement of the present application, a micro vacuum pump and a cooling tank are fixedly connected to the upper end of the main furnace body, and the micro vacuum pump and the cooling tank are respectively located behind the temperature sensor and the pressure sensor. The air inlet pipe of the micro vacuum pump is fixedly connected to the upper end of the main furnace body, and the air outlet pipe of the micro vacuum pump is fixedly connected to the surface of the cooling tank. An exhaust pipe is fixedly connected to the upper end of the cooling tank, and one end of the exhaust pipe away from the cooling tank is fixedly connected to the lower front end of the main furnace body.

[0011] As another improved supplement of the present application, a vortex groove is opened inside the cooling tank, a cooling pipe is wrapped around the outer ring of the cooling tank, and one-way electric valves are fixedly installed on the outer rings of the exhaust pipe and the outlet pipe.

[0012] To sum up, in actual application, the main furnace body is heated by generating an alternating magnetic field for the electromagnetic coil so that its internal temperature reaches 200~300 degrees. At this time, the temperature and pressure in the furnace are monitored by the temperature sensor and the pressure sensor. As the temperature rises, the raw materials will produce volatiles, causing the pressure in the furnace to change. At this time, exhaust is carried out through the exhaust furnace body 1 and the exhaust furnace body 2. At the same time, cold water is discharged into the jacket frame through the cold water pipe at the upper end, and then discharged through the cold water pipe at the lower end to cool the furnace and reduce the pressure and temperature of the pre-oxidation furnace, thereby reducing the accident risk factor, reducing the amount of manual production physical work, and reducing the difficulty of operation and safety risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of the first implementation method of this application;

[0014] Figure 2 This is a schematic diagram of the flange structure of the first embodiment of the present application;

[0015] Figure 3 This is a structural schematic diagram of an exhaust furnace body according to a first embodiment of the present application;

[0016] Figure 4 This is a bottom view of the main furnace structure of the first embodiment of the present application;

[0017] Figure 5 This is a schematic diagram of the outlet furnace structure of the first embodiment of the present application;

[0018] Figure 6 This is a structural schematic diagram of the second implementation mode of the present application;

[0019] Figure 7 This is a schematic diagram of the cooling pipe structure of the second embodiment of the present application;

[0020] Figure 8 This is a cross-sectional view of the cooling tank structure of the second embodiment of the present application.

[0021] Description of the numbers in the figure:

[0022] 1 inlet furnace body, 2 exhaust furnace body 1, 3 main furnace body, 4 exhaust furnace body 2, 5 outlet furnace body, 6 flange, 7 heat conduction plate, 8 electromagnetic coil, 9 temperature sensor, 10 pressure sensor, 11 jacket frame, 12 reinforcement column, 13 cold water pipe, 14 micro vacuum pump, 15 cooling tank, 16 exhaust pipe, 17 vortex groove, 18 cooling pipe. DETAILED DESCRIPTION

[0023] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0024] The first implementation method:

[0025] Figure 1 and Figure 2 It shows: a pre-oxidation furnace with a pressure monitoring structure, including an inlet furnace body 1, an exhaust furnace body 2 is provided on the right side of the inlet furnace body 1, a main furnace body 3 is provided on the right side of the exhaust furnace body 2, an exhaust furnace body 2 is provided on the right side of the main furnace body 3, an exhaust furnace body 2 is provided on the right side of the main furnace body 3, and an outlet furnace body 5 is provided on the right side of the exhaust furnace body 24. The left and right ends of the inlet furnace body 1, the exhaust furnace body 2, the main furnace body 3, the exhaust furnace body 24 and the outlet furnace body 5 are fixedly connected with flanges 6, and two adjacent flanges 6 are fixedly connected by bolts. A temperature sensor 9 and a pressure sensor 10 are respectively fixedly installed on the upper end of the main furnace body 3. Those skilled in the art can select a suitable type of temperature sensor 9 according to actual needs, for example: WZP-231. Those skilled in the art can select a suitable type of pressure sensor 10 according to actual needs, for example: NJ-P1. The temperature and pressure in the pre-oxidation furnace can be monitored in real time by the temperature sensor 9 and the pressure sensor 10, which is convenient for the use of the staff.

[0026] Figure 3 It is shown that the upper ends of the exhaust furnace body 1 2 and the exhaust furnace body 2 4 are both rectangular parallelepiped, the middle parts are both isosceles trapezoidal, and the lower ends are both cubes, and the furnace bodies of the exhaust furnace body 1 2 and the exhaust furnace body 2 4 are connected.

[0027] Figure 4 It is shown that: a heat conducting plate 7 is fixedly connected to the lower end of the main furnace body 3, and an electromagnetic coil 8 is fixedly connected to the bottom of the heat conducting plate 7. The electromagnetic coil 8 can quickly heat up the inside of the main furnace body 3 and the temperature is uniform. The main furnace body 3 is composed of two rectangular blocks of different sizes, and the longitudinal section of the heat conducting plate 7 is L-shaped.

[0028] Figure 5 It is shown that: the outer ring of the outlet furnace body 5 is provided with a jacket frame 11, and a plurality of reinforcing columns 12 are fixedly penetrated on the surface of the jacket frame 11, and the inner ends of the reinforcing columns 12 are fixedly connected to the surface of the outlet furnace body 5, and the upper and lower ends of the jacket frame 11 are fixedly connected with cold water pipes 13, through which the cold water in the jacket frame 11 can flow, so as to cool the outlet furnace body 5, and a gap is left between the jacket frame 11 and the outlet furnace body 5, and the corresponding ends of the two cold water pipes 13 are connected to the jacket frame 11.

[0029] When in use, the main furnace body 3 is heated by generating an alternating magnetic field through the electromagnetic coil 8, so that its internal temperature reaches 200-300 degrees. At this time, the temperature and pressure in the furnace are monitored by the temperature sensor 9 and the pressure sensor 10. As the temperature rises, the raw materials will produce volatiles, which will change the pressure in the furnace. At this time, exhaust is carried out through the exhaust furnace body 1 2 and the exhaust furnace body 2 4, and at the same time, cold water is discharged into the jacket frame 11 through the cold water pipe 13 at the upper end, and then discharged through the cold water pipe 13 at the lower end to cool the furnace and reduce the pressure and temperature of the pre-oxidation furnace, thereby reducing the accident risk factor, reducing the amount of manual production physical work, and reducing the difficulty of operation and safety risks.

[0030] The second implementation method:

[0031] Based on the first embodiment, this embodiment adds a micro vacuum pump 14, a cooling tank 15, an exhaust pipe 16, a vortex groove 17 and a cooling pipe 18, and the rest of the parts are consistent with the first embodiment.

[0032] Figure 6 and Figure 7 As shown: the upper end of the main furnace body 3 is also fixedly connected with a micro vacuum pump 14 and a cooling tank 15. Those skilled in the art can select a suitable model of the micro vacuum pump 14 according to actual needs, for example: RS555. The micro vacuum pump 14 and the cooling tank 15 are respectively located behind the temperature sensor 9 and the pressure sensor 10. The air inlet pipe of the micro vacuum pump 14 is fixedly connected to the upper end of the main furnace body 3, and the air outlet pipe of the micro vacuum pump 14 is fixedly connected to the surface of the cooling tank 15. The upper end of the cooling tank 15 is fixedly connected with an exhaust pipe 16, and the exhaust pipe 16 discharges the cooled air into the main furnace body 3. At the lower end of the inner cavity of the furnace body 3, the micro vacuum pump 14 sucks the air from the upper end of the inner cavity of the main furnace body 3, so that the air inside the main furnace body 3 flows. The end of the exhaust pipe 16 away from the cooling tank 15 is fixedly connected to the lower front end of the main furnace body 3. The outer circle of the cooling tank 15 is wrapped with a cooling pipe 18. Cold water is introduced into the cooling pipe 18 to cool the air inside the cooling tank 15. The outer circles of the exhaust pipe 16 and the air outlet pipe are fixedly installed with one-way electric valves. Those skilled in the art can select a suitable type of one-way electric valve according to actual needs, for example: D341X-10C.

[0033] Figure 8 As shown, a vortex groove 17 is opened inside the cooling tank 15, and the vortex groove 17 can increase the movement path of the air, thereby improving the cooling rate of the air inside the cooling tank 15.

[0034] As the electromagnetic coil 8 heats the main furnace body 3, the temperature inside the main furnace body 3 also rises. When the temperature inside the main furnace body 3 is too high, the micro vacuum pump 14 can be started to pump the air inside the main furnace body 3 into the cooling tank 15, and cold water can be introduced into the cooling pipe 18 to cool the surface of the cooling tank 15, thereby cooling the air inside it. After the air enters the cooling tank 15, it moves along the path of the vortex groove 17 and then enters the main furnace body 3 through the exhaust pipe 16, so that the overall temperature inside the main furnace body 3 is within the standard temperature range, effectively avoiding the internal temperature of the main furnace body 3 being too high, thereby affecting the raw materials in the furnace. At the same time, the air inside the main furnace body 3 can flow, so that the electromagnetic coil 8 can evenly heat the air inside the main furnace body 3.

[0035] In view of current practical needs, the protection scope of the above-mentioned implementation mode adopted in this application is not limited to this. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the protection scope of this utility model.

Claims

1. A pre-oxidation furnace with a pressure monitoring structure, comprising an inlet furnace body (1), characterized in that: An exhaust furnace body (2) is provided on the right side of the inlet furnace body (1), a main furnace body (3) is provided on the right side of the exhaust furnace body (2), an exhaust furnace body (4) is provided on the right side of the main furnace body (3), an outlet furnace body (5) is provided on the right side of the exhaust furnace body (4), and the left and right ends of the inlet furnace body (1), the exhaust furnace body (2), the main furnace body (3), the exhaust furnace body (4) and the outlet furnace body (5) are fixedly connected with flanges (6), and two adjacent flanges (6) are fixedly connected by bolts; A heat conducting plate (7) is fixedly connected to the lower end of the main furnace body (3), an electromagnetic coil (8) is fixedly connected to the bottom of the heat conducting plate (7), and a temperature sensor (9) and a pressure sensor (10) are respectively fixedly mounted on the upper end of the main furnace body (3); The outer ring of the outlet furnace body (5) is provided with a jacket frame (11), and a plurality of reinforcing columns (12) are fixedly penetrated through the surface of the jacket frame (11), and the inner ends of the reinforcing columns (12) are fixedly connected to the surface of the outlet furnace body (5), and the upper and lower ends of the jacket frame (11) are fixedly connected to cold water pipes (13).

2. The pre-oxidation furnace with a pressure monitoring structure according to claim 1, characterized in that: The exhaust furnace body 1 (2) and the exhaust furnace body 2 (4) are both rectangular at the upper end, isosceles trapezoid in the middle, and cube at the lower end.

3. The pre-oxidation furnace with a pressure monitoring structure according to claim 1, characterized in that: The main furnace body (3) is composed of two rectangular blocks of different sizes, and the longitudinal section of the heat conducting plate (7) is L-shaped.

4. The pre-oxidation furnace with a pressure monitoring structure according to claim 1, characterized in that: A gap is left between the jacket frame (11) and the outlet furnace body (5), and corresponding ends of the two cold water pipes (13) are both connected to the jacket frame (11).

5. The pre-oxidation furnace with a pressure monitoring structure according to claim 1, characterized in that: The upper end of the main furnace body (3) is also fixedly connected to a micro vacuum pump (14) and a cooling tank (15), and the micro vacuum pump (14) and the cooling tank (15) are respectively located behind the temperature sensor (9) and the pressure sensor (10). The air inlet pipe of the micro vacuum pump (14) is fixedly connected to the upper end of the main furnace body (3), and the air outlet pipe of the micro vacuum pump (14) is fixedly connected to the surface of the cooling tank (15). The upper end of the cooling tank (15) is fixedly connected to an exhaust pipe (16), and the end of the exhaust pipe (16) away from the cooling tank (15) is fixedly connected to the lower front end of the main furnace body (3).

6. The pre-oxidation furnace with a pressure monitoring structure according to claim 5, characterized in that: A vortex groove (17) is provided inside the cooling tank (15), a cooling pipe (18) is wound around the outer ring of the cooling tank (15), and one-way electric valves are fixedly mounted on the outer rings of the exhaust pipe (16) and the outlet pipe.

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