Cooling structure and pre-oxidation furnace flame detection device

Abstract

The utility model relates to the technical field of flame detection of a pre-oxidation furnace, in particular to a cooling structure and a flame detection device of a pre-oxidation furnace, the cooling structure comprises a shell, an accommodating space is arranged in the shell, and a camera is positioned in the accommodating space; the cooling water assembly is at least partially arranged in the accommodating space, and cooling water flows through the cooling water assembly; and the circulating fan is arranged in the accommodating space and blows air into the accommodating space, so that the air flow in the accommodating space circulates. According to the utility model, the normal working temperature of the camera and the components thereof can be maintained in a high-temperature environment, and the problem that the camera and the internal components thereof are overheated due to long-time working is effectively prevented. The good cooling effect can avoid the interference of the heat effect on the image quality, the flame detection accuracy is improved, the false detection rate is reduced, the long-term stable operation of the system is ensured by optimizing cooling and airflow circulation, and the failure rate caused by overheating of the camera is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of flame detection of a pre-oxidation furnace, in particular to a cooling structure and a flame detection device of a pre-oxidation furnace. Background Art

[0002] The oxidation and carbonization process of PAN-based carbon fibers includes pre-oxidation, low-temperature carbonization, high-temperature carbonization, surface treatment, sizing and drying, etc. Among them, pre-oxidation is an important intermediate process. The linear molecular chain of PAN precursor gradually forms a heat-resistant ladder structure in this process. PAN precursor needs to pass through multiple pre-oxidation furnaces with increasing temperatures in the oxidation furnace cluster. The main reactions of the pre-oxidation process are cyclization, oxidation and dehydrogenation, which are all exothermic reactions, which will cause heat storage and overheating inside the fiber. The temperature in the pre-oxidation furnace is high, and it is easy to catch fire due to excessive local temperature.

[0003] In the prior art, for example, a Chinese invention patent application with application publication number CN115035677A disclosed on September 9, 2022, a fire flame detection system and a fire extinguishing security system in an oxidation furnace. The system automatically identifies the flame through a long optical lens extended into the oxidation furnace, and then quickly extinguishes the flame after identifying the flame, which greatly improves the speed of fire extinguishing compared with traditional temperature sensors.

[0004] However, due to the high temperature of the pre-oxidation furnace, although the long optical lens extends into the pre-oxidation furnace and the camera body is located outside the pre-oxidation furnace, the camera will also heat up after working for a long time. When the camera heats up, the thermal effect will interfere with the pixels in the captured image. Once a false detection and automatic fire extinguishing measures are taken, great losses will be caused.

[0005] The information disclosed in this background technology section is only intended to deepen the understanding of the overall background technology of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to those skilled in the art. Utility Model Content

[0006] The utility model provides a cooling structure and a flame detection device for a pre-oxidation furnace, thereby effectively solving the problems in the background technology.

[0007] In order to achieve the above object, the technical solution adopted by the utility model is: a cooling structure, comprising:

[0008] A housing, wherein the housing includes a containing space, and the camera is located in the containing space;

[0009] A cooling water component, wherein the cooling water component is at least partially disposed in the accommodating space and cooling water flows through the cooling water component;

[0010] A circulation fan is disposed in the accommodating space to blow air into the accommodating space so as to circulate the airflow in the accommodating space.

[0011] Furthermore, the cooling water assembly comprises:

[0012] A cooling water inlet and a cooling water outlet, wherein the cooling water inlet and the cooling water outlet are respectively arranged on the shell;

[0013] A condenser, two ends of which are connected to the cooling water inlet and the cooling water outlet respectively, and the condenser is arranged in the accommodating space.

[0014] Furthermore, the condenser is at least partially configured as a grid structure.

[0015] Furthermore, the condenser is provided with two vertical sections at the cooling water inlet and the cooling water outlet respectively, the two vertical sections are vertically arranged, the grid structure is arranged between the two vertical sections, and the grid structure is arranged horizontally.

[0016] Furthermore, the circulation fan is arranged between the two vertical sections and blows air toward the grid-type structure.

[0017] Furthermore, a mounting seat is provided at the top of the shell, the cooling water assembly and the circulating fan are fixedly provided on the mounting seat, and the mounting seat is made of a material with a low thermal conductivity coefficient.

[0018] Furthermore, a heat-insulating layer is provided on the inner wall of the shell, and the heat-insulating layer is used to isolate the heat outside the shell.

[0019] The utility model also includes a pre-oxidation furnace flame detection device, including the cooling structure and a camera as described above, wherein the camera is arranged in the cooling structure.

[0020] The beneficial effects of the utility model are as follows: the utility model realizes efficient heat dissipation through the combination of cooling water components and circulating fans, ensuring that the camera and its components can maintain normal operating temperature even in high temperature environments, and continuous cooling water flow and air circulation effectively prevent the camera and its internal components from overheating due to long-term operation. Good cooling effect can avoid the interference of thermal effects on image quality, improve the accuracy of flame detection, reduce the false detection rate, and ensure the long-term stable operation of the system by optimizing cooling and airflow circulation, reducing the failure rate caused by camera overheating. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 is a schematic diagram of the cooling structure;

[0023] Figure 2 It is a schematic diagram of the structure of the cooling water component and the circulating fan;

[0024] Figure 3 is a top view of the cooling water component;

[0025] Figure 4 It is a schematic diagram of the structure of the shell. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0027] In the description of the present invention, it should be noted that the directions or positional relationships indicated by “center”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “inside” and “outside”, etc., are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] like Figures 1 to 4 Shown: A cooling structure comprising:

[0030] The housing 1 includes a housing space, and the camera 4 is located in the housing space;

[0031] A cooling water component 2, wherein the cooling water component 2 is at least partially disposed in the accommodating space, and cooling water flows through the cooling water component 2;

[0032] The circulation fan 3 is disposed in the accommodating space to blow air into the accommodating space so as to circulate the airflow in the accommodating space.

[0033] Through the combination of the cooling water component 2 and the circulating fan 3, an efficient heat dissipation effect is achieved, ensuring that the camera 4 and its components can maintain a normal operating temperature even in a high temperature environment. The continuous cooling water flow and air circulation effectively prevent the camera 4 and its internal components from overheating due to long-term operation. A good cooling effect can avoid the interference of thermal effects on image quality, improve the accuracy of flame detection, and reduce the false detection rate. By optimizing cooling and airflow circulation, the long-term stable operation of the system is ensured, and the failure rate caused by overheating of the camera 4 is reduced.

[0034] In this embodiment, the cooling water component 2 includes:

[0035] A cooling water inlet 21 and a cooling water outlet 22, the cooling water inlet 21 and the cooling water outlet 22 are respectively arranged on the housing 1;

[0036] The condenser 23 has two ends connected to the cooling water inlet 21 and the cooling water outlet 22 respectively. The condenser 23 is disposed in the accommodating space.

[0037] The design of the condenser 23 structure increases the contact area between the cooling water and the ambient air, improves the heat exchange efficiency, and allows the temperature around the camera 4 to drop rapidly. The setting of the cooling water inlet 21 and outlet allows the cooling water to circulate in the accommodating space, take away the heat and then be recycled, ensuring a continuous cooling effect. The use of condenser 23 materials with good thermal conductivity can further improve the cooling effect and ensure that the temperature in the accommodating space is always maintained within the range required for the normal operation of the camera 4.

[0038] The condenser tube 23 is at least partially configured as a grid structure 231 .

[0039] The condenser 23 is partially or completely set as a grid-type structure 231 in the accommodating space, that is, the condenser 23 is arranged in parallel in the space to form a structure similar to a fence. The condenser 23 of the grid-type structure 231 should be evenly distributed near the camera 4 and its heat source to ensure the uniformity of the cooling effect. The condenser 23 uses high thermal conductivity materials, such as copper or aluminum, to improve the heat conduction efficiency. The cooling water flows in the condenser 23 of the grid-type structure 231, and the water flow path is optimized to increase the contact time and area between the cooling water and the tube wall, thereby improving the heat exchange efficiency.

[0040] In this embodiment, the condenser 23 is provided with two vertical sections 232 at the cooling water inlet 21 and the cooling water outlet 22 respectively. The two vertical sections 232 are vertically arranged, and a grid structure 231 is arranged between the two vertical sections 232, and the grid structure 231 is arranged horizontally.

[0041] The circulation fan 3 is disposed between the two vertical sections 232 and blows air toward the grid structure 231 .

[0042] The circulating fan 3 blows air directly to the grid structure 231, which can effectively improve the heat dissipation efficiency of the condenser 23, allowing the cooling water to take away more heat, thereby better maintaining the low temperature environment in the accommodation space. The fan blowing makes the air flow on the surface of the condenser 23 more uniform, preventing local overheating, ensuring the stability and long life of the camera 4 and its components. The design of the grid structure 231 increases the surface area of ​​the condenser 23, and the role of the circulating fan 3 further improves the heat exchange efficiency, and the heat dissipation effect is better.

[0043] As a preferred embodiment of the above, a mounting seat 11 is provided at the top of the shell 1, and a cooling water assembly 2 and a circulating fan 3 are fixedly provided on the mounting seat 11. The mounting seat 11 is made of a material with a low thermal conductivity coefficient.

[0044] The material with low thermal conductivity effectively blocks the high temperature in the pre-oxidation furnace, reduces the heat transferred to the cooling water assembly 2 and the circulating fan 3, and maintains their normal working temperature. The cooling water assembly 2 and the circulating fan 3 fixed on the mounting base 11 have good stability, and are not easily affected by vibration or external force, thus ensuring the reliability of the system.

[0045] The inner wall of the shell 1 is provided with a heat-insulating layer 12 , and the heat-insulating layer 12 is used to isolate the shell 1 from external heat.

[0046] The thermal insulation layer 12 can effectively isolate the high-temperature heat outside the shell 1, reduce the heat conduction to the inside of the shell 1, maintain a low-temperature environment in the accommodating space, and reduce the external heat entering the inside of the shell 1. In conjunction with the work of the cooling water component 2 and the circulating fan 3, the overall cooling effect can be significantly improved to ensure the normal operation of the camera 4 and its related components.

[0047] The present embodiment also includes a pre-oxidation furnace flame detection device, including the cooling structure and camera 4 as described above, and the camera 4 is arranged in the cooling structure.

[0048] Through the above design and optimization, the cooling effect and system stability of the pre-oxidation furnace flame detection device can be significantly improved, ensuring the normal operation of camera 4 in a high temperature environment, reducing the false detection rate, and improving the safety and reliability of the production process.

[0049] Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the description are only for explaining the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A cooling structure, characterized in that: include: A housing, wherein the housing includes a containing space, and the camera is located in the containing space; A cooling water component, wherein the cooling water component is at least partially disposed in the accommodating space and cooling water flows through the cooling water component; A circulation fan is disposed in the accommodating space to blow air into the accommodating space so as to circulate the airflow in the accommodating space.

2. The cooling structure according to claim 1, characterized in that: The cooling water assembly comprises: A cooling water inlet and a cooling water outlet, wherein the cooling water inlet and the cooling water outlet are respectively arranged on the shell; A condenser, two ends of which are connected to the cooling water inlet and the cooling water outlet respectively, and the condenser is arranged in the accommodating space.

3. The cooling structure according to claim 2, characterized in that: The condenser tube is at least partially configured as a grid structure.

4. The cooling structure according to claim 3, characterized in that: The condenser is provided with two vertical sections at the cooling water inlet and the cooling water outlet respectively, the two vertical sections are vertically arranged, the grid structure is arranged between the two vertical sections, and the grid structure is arranged horizontally.

5. The cooling structure according to claim 4, characterized in that: The circulation fan is arranged between the two vertical sections and blows air toward the grid structure.

6. The cooling structure according to claim 1, characterized in that: A mounting seat is arranged at the top of the shell, the cooling water assembly and the circulating fan are fixedly arranged on the mounting seat, and the mounting seat is made of a material with a low thermal conductivity coefficient.

7. The cooling structure according to claim 1, characterized in that: The inner wall of the shell is provided with a heat-insulating layer, and the heat-insulating layer is used to isolate the heat outside the shell.

8. A flame detection device for a pre-oxidation furnace, characterized in that: The invention comprises a cooling structure and a camera as described in any one of claims 1 to 7, wherein the camera is arranged in the cooling structure.

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