CN-224199548-U - Pre-oxidation furnace

CN224199548UCN 224199548 UCN224199548 UCN 224199548UCN-224199548-U

Abstract

The embodiment of the application provides a pre-oxidation furnace, which comprises a furnace body and a protection component, wherein a pressure relief opening is formed in one side of the furnace body, the furnace body further comprises a pressure relief cover covered on the pressure relief opening, one end of the pressure relief cover is movably connected to the furnace body, so that the pressure relief cover can be opened relative to the furnace body in response to preset pressure in the furnace body, the protection component is arranged outside the furnace body and corresponds to the pressure relief opening, the protection component comprises a fixing frame and a fire-proof curtain, one end of the fire-proof curtain is connected to the fixing frame and can be switched between a first state and a second state relative to the fixing frame, when the fire-proof curtain is in the first state, the fire-proof curtain exposes the pressure relief opening, and when the fire-proof curtain is in the second state, the fire-proof curtain shields the pressure relief opening. According to the pre-oxidation furnace disclosed by the application, even if carbon fibers in the furnace body generate deflagration, the pressure relief cover is opened, flame is flushed out of the furnace body through the pressure relief opening and can be blocked by the fire-proof curtain, so that the personnel on one side of the fire-proof curtain, which is far away from the furnace body, are not hurt.

Inventors

FAN CHENGGONG
XU DONGWANG
FENG JIAN
GU ZHENGAN
LI ZIHAO

Assignees

中复神鹰碳纤维股份有限公司

Dates

Publication Date: 20260505
Application Date: 20250529

Claims (10)

1. A pre-oxidation oven, comprising: the device comprises a furnace body, wherein one side of the furnace body is provided with a pressure relief opening, the furnace body further comprises a pressure relief cover covered on the pressure relief opening, and one end of the pressure relief cover is movably connected with the furnace body so that the pressure relief cover can be opened relative to the furnace body in response to preset pressure in the furnace body; the protection component is arranged outside the furnace body and corresponds to the pressure relief opening, the protection component comprises a fixing frame and a fireproof curtain, one end of the fireproof curtain is connected to the fixing frame and can be switched between a first state and a second state relative to the fixing frame, when the fireproof curtain is in the first state, the fireproof curtain exposes out of the pressure relief opening, and when the fireproof curtain is in the second state, the fireproof curtain shields the pressure relief opening.
2. The pre-oxidation oven according to claim 1, wherein the shield assembly further comprises a spool rotatably connected to one side of the mount, the fire curtain being wound on the spool and configured to be rotatable therewith to switch between a first state and a second state.
3. The pre-oxidation oven according to claim 2, further comprising a pressure sensor, wherein the oven body is provided with a mounting hole communicated with the interior of the oven body, and the pressure sensor is mounted in the mounting hole.
4. A pre-oxidation oven according to claim 3, further comprising a motor in driving connection with the reel and a controller in electrical connection with the motor and the pressure sensor, respectively, the controller being configured to control the motor to rotate the reel to switch the fire curtain to the second state when the pressure value detected by the pressure sensor exceeds a preset pressure value.
5. A pre-oxidation oven according to claim 3, wherein the number of said mounting holes is plural, each of said mounting holes is provided on said oven body at equal intervals with each other, the number of said pressure sensors is plural, each of said pressure sensors is mounted in each of said mounting holes in one-to-one correspondence.
6. The pre-oxidation oven according to claim 1, wherein the fixing frame comprises two upright posts which are opposite to each other and are arranged at intervals, wherein sliding grooves are formed in the upright posts along the unfolding direction of the fire-resistant curtain, and the sliding grooves are used for allowing at least part of the fire-resistant curtain to pass through.
7. The pre-oxidation oven according to claim 6, wherein the fixing frame further comprises a blocking portion arranged on the upright post, and the blocking portion is located on one side of the fire-resistant curtain away from the oven body when the fire-resistant curtain is in the second state.
8. The pre-oxidation oven according to claim 7, wherein one end of the blocking portion is movably connected to one of the pillars, and the other end of the blocking portion is configured to be extendably disposed in a direction toward the other one of the pillars.
9. The pre-oxidation oven according to claim 1, wherein the fire-resistant curtain comprises a plurality of fire-resistant material layers connected to each other, and a gap is formed between two adjacent fire-resistant material layers, and the gap is filled with fire-resistant fluid.
10. The pre-oxidation oven according to claim 1, wherein the number of pressure relief openings is a plurality, and wherein the fire curtain shields each pressure relief opening when the fire curtain is in the second state.

Description

Pre-oxidation furnace Technical Field The application relates to the field of carbon fiber processing equipment, in particular to a pre-oxidation furnace. Background The main process for preparing the carbon fiber comprises links of precursor production, pre-oxidation, carbonization, surface treatment, filament winding and the like, and each process link has an important influence on the quality of the carbon fiber. Preoxidation refers to a preoxidation process that the carbon fiber precursor must undergo before carbonization, and a preoxidation furnace is a critical device in the preoxidation process. When the carbon fiber precursor is subjected to a pre-oxidation process in a pre-oxidation furnace, a series of chemical changes can be generated on the surface of the precursor so as to improve the performance of the precursor, if the precursor is not subjected to pre-oxidation, linear molecular chains of the precursor are thermally melted and broken, and are converted into resin carbon instead of carbon fiber carbon with certain strength, and the performance is extremely low, so that the pre-oxidation process is very important in the carbon fiber production process. However, carbon fibers are still inflammable in the pre-oxidation process, if the carbon fibers are burnt in an oxidation furnace, the furnace pressure in the oxidation furnace can be instantaneously increased, and flame rushes out of the furnace can cause injury to staff. Disclosure of utility model The embodiment of the application aims to provide a pre-oxidation furnace so as to improve the safety of the pre-oxidation furnace in the use process. The embodiment of the application provides a pre-oxidation furnace, which comprises a furnace body, wherein one side of the furnace body is provided with a pressure relief opening, the furnace body further comprises a pressure relief cover covered on the pressure relief opening, one end of the pressure relief cover is movably connected to the furnace body so that the pressure relief cover can be opened relative to the furnace body in response to preset pressure in the furnace body, a protection component is arranged outside the furnace body and corresponds to the pressure relief opening, the protection component comprises a fixing frame and a fire-proof curtain, one end of the fire-proof curtain is connected to the fixing frame and can be switched between a first state and a second state relative to the fixing frame, when the fire-proof curtain is in the first state, the fire-proof curtain exposes the pressure relief opening, and when the fire-proof curtain is in the second state, the fire-proof curtain shields the pressure relief opening. In the implementation process, through setting up the protective component corresponding to the pressure release mouth outside the furnace body, adopt the mount can conveniently set up the flame retardant coating, when the carbon fiber in the furnace body does not have the deflagration risk, can make the flame retardant coating be in first state, do not influence staff's normal operation, when the carbon fiber in the furnace body has the deflagration risk, can make the flame retardant coating be in the second state, make the flame retardant coating shelter from the pressure release mouth, at this moment, even the carbon fiber in the furnace body produces deflagration, the pressure release lid is opened, flame is outside the furnace body is washed out through the pressure release mouth, also can be blocked by the flame retardant coating and be unlikely to lead to the fact the injury to the staff that is located flame retardant coating and deviates from furnace body one side, staff's safety has been protected, the security of pre-oxidation furnace in the use has been improved. In one possible implementation, the protective assembly further includes a spool rotatably connected to one side of the mount, and the fire-blocking curtain is wound on the spool and configured to rotate with the spool to switch between the first state and the second state. In the implementation process, the winding shaft is arranged in the protection component, so that the fireproof curtain can be wound on the winding shaft to be in the first state, and can be put down from the winding shaft to be in the second state, and the fireproof curtain is simple in structure and convenient to switch between the first state and the second state. In one possible implementation manner, the pre-oxidation furnace further comprises a pressure sensor, the furnace body is provided with a mounting hole communicated with the interior of the furnace body, and the pressure sensor is mounted in the mounting hole. In the implementation process, the pressure sensor is arranged in the mounting hole of the furnace body, so that the pressure value in the furnace body can be detected in real time, and a worker can assist in judging the deflagration risk of the carbon fiber in the furnace body by means of the pressure valu