A method for determining the opening position of a long lens of an oxidation furnace

Abstract

The present invention relates to the technical field of oxidation furnace fire extinguishing, and in particular to a method for determining the opening position of an oxidation furnace long lens, comprising the following steps: S10: hanging yarn in a pre-oxidation furnace, wherein at least three yarns are hung at intervals on the same layer; S20: adjusting the tension on each of the yarns to a set value; S30: determining a vertical line on one side of the oxidation furnace fixed long lens; S40: determining the projection lines of at least three yarns on the same layer on one side of the oxidation furnace fixed long lens; S50: taking the intersection of the projection line of each layer of yarn and the vertical line as the opening position of the long lens. The present invention first adjusts the yarn to a set tension value by hanging the yarn, and then determines the lens opening position by means of projection lines of at least three yarns on the same layer. Through the above-mentioned setting, one lens can realize flame recognition of three yarns, thereby improving the working efficiency of the long lens in flame recognition, and also reducing the production cost on the basis of ensuring normal operation.

Description

Technical Field

[0001] The invention relates to the technical field of oxidation furnace fire extinguishing, and in particular to a method for determining the opening position of a long lens of an oxidation furnace. Background Art

[0002] During the production process of carbon fiber, especially during the oxidation process in the oxidation furnace, high heat will be generated, which is very easy to explode when encountering open flames. Therefore, how to quickly identify the flames in the furnace and extinguish the fire has become a technical problem that needs to be solved urgently.

[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, which automatically visually identifies the flame through a long optical lens inserted into the oxidation furnace, and quickly extinguishes the flame after identifying the flame, greatly improving the speed of flame identification and extinguishing, and ensuring safe production;

[0004] However, when implementing the above solution, the inventors found that how to determine the fixed position of the long lens on the oxidation furnace has become a problem that needs to be solved urgently. Summary of the invention

[0005] In view of at least one of the above technical problems, the present invention provides a method for determining the opening position of a long lens of an oxidation furnace, which improves the monitoring efficiency by improving the process of the opening position of the long lens.

[0006] According to a first aspect of the present invention, there is provided a method for determining the opening position of a long lens of an oxidation furnace, comprising the following steps:

[0007] S10: Hanging yarns in a pre-oxidation furnace, wherein at least three yarns are hung at intervals on the same layer;

[0008] S20: adjusting the tension on each of the yarns to a set value;

[0009] S30: Determine a vertical line on one side of the oxidation furnace where the long lens is fixed;

[0010] S40: determining projection lines of at least three yarns on the same layer on one side of the oxidation furnace where the long lens is fixed;

[0011] S50: The intersection of the projection line of each layer of yarn and the vertical line is used as the opening position of the long lens.

[0012] In some embodiments of the present invention, in step S20, the set value of the tension is the tension on the yarn during production in the oxidation furnace.

[0013] In some embodiments of the present invention, in step S20, the tension is adjusted by hanging weights at both ends of the yarn.

[0014] In some embodiments of the present invention, the heavy object is a bucket.

[0015] In some embodiments of the present invention, in step S30, the side of the oxidation furnace that fixes the long lens is a side surface in a direction perpendicular to the yarn running direction.

[0016] In some embodiments of the present invention, in step S30, the vertical line is determined by using a level.

[0017] In some embodiments of the present invention, in step S40, the projection line is determined by irradiating at least three yarns on the same layer with a light source so that the projections of the three yarns overlap on the side of the oxidation furnace, and the overlapping projections are the projection line.

[0018] In some embodiments of the present invention, the light source is a high-intensity flashlight.

[0019] In some embodiments of the present invention, after the opening position is determined, the following steps are further included:

[0020] Drill holes at the opening positions of the side walls of the oxidation furnace and install sleeves at the holes.

[0021] The beneficial effects of the present invention are as follows: the present invention first adjusts the yarn to a set tension value by hanging the yarn, and then determines the lens opening position by means of projection lines of at least three yarns on the same layer. Through the above-mentioned setting, one lens can realize flame recognition of three yarns, thereby improving the working efficiency of the long lens in identifying flames, and at the same time reducing the production cost while ensuring normal operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention 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 present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a flowchart of the steps of the method for determining the opening position of the long lens of the oxidation furnace in an embodiment of the present invention;

[0024] Figure 2 A longitudinal cross-sectional view of an oxidation furnace for hanging yarn and determining vertical lines in an embodiment of the present invention;

[0025] Figure 3 It is a cross-sectional view of an oxidation furnace for hanging yarn and determining vertical lines in an embodiment of the present invention;

[0026] Figure 4 It is a structural schematic diagram of determining the projection line of the yarn in an embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of the structure of the sleeve installation in an embodiment of the present invention;

[0028] Figure 6 Schematic diagram of the structure after the long lens is fixed in the embodiment of the present invention. DETAILED DESCRIPTION

[0029] 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 the embodiments.

[0030] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0032] like Figure 1 The method for determining the opening position of the long lens of the oxidation furnace shown comprises the following steps:

[0033] S10: Hanging yarn 01 in the pre-oxidation furnace, at least three yarns 01 are hung at intervals on the same layer; Figure 2 and Figure 3 As shown in , when the yarn 01 is hung, both ends of the yarn 01 are wrapped around the traction rollers 02 at both ends of the oxidation furnace. The same layer here means that the yarn 01 between the two traction rollers 02 at approximately the same height at both ends of the oxidation furnace is the same layer;

[0034] S20: adjusting the tension on each yarn 01 to a set value; since the yarn 01 itself has a certain gravity, when it is wrapped around the two traction rollers 02, the middle part of the yarn 01 will bend downward to a certain extent. In order to better fit the state of the yarn 01 in the actual production process, in the embodiment of the present invention, traction is performed at both ends of the yarn 01 to apply a set traction force to reduce the bending of the yarn 01;

[0035] S30: Determine a vertical line 03 on the side of the oxidation furnace where the long lens is fixed; it should be pointed out here that, in the embodiment of the present invention, the illumination range of the long lens in the horizontal direction can cover the length of the oxidation furnace, so the vertical line 03 is provided to facilitate the installation of the long lens, and the specific position of the vertical line 03 is not limited.

[0036] S40: determining projection lines of at least three yarns 01 on the same layer on one side of the oxidation furnace fixed long lens; the projection line here refers to the line where the projections of the three yarns 01 on the side wall of the oxidation furnace overlap;

[0037] S50: The intersection of the projection line of each layer of yarn 01 and the vertical line 03 is used as the opening position of the long lens. Figure 5 As shown in , after determining the intersection of the projection line and the vertical line 03, it is the opening position of the long lens; of course, it should be pointed out here that Figure 5 In the figure, the yarn 01 is drawn as a straight line. In the actual process, the yarn 01 is in a curved state. By overlapping the three yarns 01 on the same layer with projection to determine the height position of the center hole, a single long lens can take into account at least three yarns 01 on the same layer during specific shooting. Figure 3 If any of the three yarns 01 on the same layer shown in FIG. 1 has a flame, it can be identified by a long lens.

[0038] In the above embodiment, the yarn 01 is first adjusted to a set tension value by hanging the yarn, and then the lens opening position is determined by projecting at least three yarns 01 on the same layer. Through the above-mentioned setting, one lens can realize flame recognition of three yarns 01, thereby improving the working efficiency of the long lens in identifying flames, and at the same time reducing the production cost while ensuring normal operation.

[0039] On the basis of the above embodiment, in order to simulate the state of the actual yarn 01 production process, in the embodiment of the present invention, in step S20, the setting value of the tension is the tension on the yarn 01 during the production in the oxidation furnace. When specifically adjusting the tension of the yarn 01, such as Figure 2As shown in FIG. 1 , in step S20, the tension is adjusted by hanging weights 04 at both ends of the yarn 01. The weights 04 here can have various forms, and the specific tension can be detected by a tension detector to detect the pulling force between the two weights 04 when hanging, and the pulling force is the tension. When the tension is determined, the weight of the weight 04 can also be determined, and then the tension can be determined by hanging the weight 04 of the weight; in some embodiments of the present invention, in order to facilitate adjustment, the weight 04 is a bucket, and through the setting of the bucket, the tension can be adjusted by adjusting the amount of water in the bucket.

[0040] On the basis of the above embodiment, in step S30, one side of the oxidation furnace fixed with the long lens is the side perpendicular to the wire running direction of the yarn 01. That is, the two side surfaces in the width direction of the oxidation furnace are arranged on the side surfaces, so that the yarn 01 passing through the oxidation furnace can be monitored during the operation of the oxidation furnace, thereby ensuring the monitoring range and improving the reliability of use.

[0041] Based on the above embodiments, Figure 3 As shown in FIG. 1 , in step S30, the vertical line 03 is determined by a level meter 05. The level meter 05 is a prior art, and the vertical line can be determined on the side wall of the oxidation furnace by emitting a laser on the level meter 05.

[0042] In some embodiments of the present invention, in step S40, the projection line is determined by irradiating at least three yarns 01 on the same layer with a light source so that the projections of the three yarns 01 overlap on the side of the oxidation furnace, and the overlapping projections are the projection lines. When irradiating with the light source, in order to reduce light scattering, in the embodiments of the present invention, Figure 4 As shown in , the light source is a strong flashlight 06. Through the illumination of the strong flashlight 06, the projection of the yarn 01 is displayed on the side wall of the oxidation furnace. By adjusting the height position of the strong flashlight 06, the projections of the three yarns 01 on the same layer overlap, and the overlapping projection line is the light collected by the long lens.

[0043] In some embodiments of the present invention, after the hole opening position is determined, the hole opening position of the side wall of the oxidation furnace is punched, and a sleeve 07 is installed at the punched position. The sleeve 07 is a structure for fixing a long lens, and the long lens passes through the sleeve 07 and extends into the oxidation furnace. After the sleeve 07 is fixed, when observing through the sleeve 07 from the outside of the oxidation furnace, it can be seen that the yarns 01 of the same layer are arranged in a line.

[0044] Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A method for determining the opening position of a long lens of an oxidation furnace, characterized in that: The following steps are involved: S10: Hanging yarns in a pre-oxidation furnace, wherein at least three yarns are hung at intervals on the same layer; S20: adjusting the tension on each of the yarns to a set value; S30: Determine a vertical line on one side of the oxidation furnace where the long lens is fixed; S40: determining a projection line of at least three yarns on the same layer on one side of the oxidation furnace fixed long lens, the projection line being a line where the projections of at least three yarns on the side wall of the oxidation furnace overlap; S50: The intersection of the projection line of each layer of yarn and the vertical line is used as the opening position of the long lens.

2. The method for determining the opening position of the oxidation furnace long lens according to claim 1, characterized in that: In step S20, the setting value of the tension is the tension on the yarn during production in the oxidation furnace.

3. The method for determining the opening position of the oxidation furnace long lens according to claim 2, characterized in that: In step S20, the tension is adjusted by hanging weights at both ends of the yarn.

4. The method for determining the opening position of the oxidation furnace long lens according to claim 3, characterized in that: The heavy object is a bucket.

5. The method for determining the opening position of the oxidation furnace long lens according to claim 1, characterized in that: In step S30, the side of the oxidation furnace that fixes the long lens is the side surface in a direction perpendicular to the yarn running direction.

6. The method for determining the opening position of the oxidation furnace long lens according to claim 1, characterized in that: In step S30 , the vertical line is determined by using a level meter.

7. The method for determining the opening position of the oxidation furnace long lens according to claim 1, characterized in that: In step S40, the projection line is determined by irradiating at least three yarns on the same layer with a light source so that the projections of the three yarns overlap on the side of the oxidation furnace, and the overlapping projections are the projection line.

8. The method for determining the opening position of the oxidation furnace long lens according to claim 7, characterized in that: The light source is a strong light flashlight.

9. The method for determining the opening position of the oxidation furnace long lens according to claim 1, characterized in that: After the hole location is determined, the following steps are also included: Drill holes at the opening positions of the side walls of the oxidation furnace and install sleeves at the holes.

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