System and method for safety control of cyliner combusting hydgren gas

Abstract

A hydrogen co-firing cylinder safety management system is provided, comprising: a camera for photographing a flame in a hydrogen co-firing cylinder in which a flame is generated according to hydrogen co-firing; a positioning unit for determining the position of the flame generated within the cylinder from an image input from the camera; a position storage unit in which a reference position of the flame within the hydrogen co-firing cylinder is stored; and a defect prediction unit for predicting a mechanical defect of the hydrogen co-firing cylinder based on the difference between the reference position and the determined position of the flame.

Description

Technology Field

[0001] The present invention relates to a hydrogen co-firing cylinder safety management system and method, and more specifically, to a hydrogen co-firing cylinder safety management system and method that can reduce the possibility of mechanical defects by monitoring the flame generated during co-firing within the cylinder to effectively monitor mechanical defects, thereby reducing time and economic costs. Background Technology

[0002] Hydrogen co-firing power generation is the process of producing electrical energy by mixing and burning hydrogen with other fuels in a gas turbine facility.

[0003] When hydrogen co-firing is carried out in existing gas turbine power facilities, the likelihood of mechanical defects caused by flashback and flame displacement increases as the hydrogen mixing ratio rises.

[0004] Therefore, if the flame is located at a position other than the center within the hydrogen co-firing cylinder, mechanical defects or safety issues may occur; however, currently, no safety management system or method has been developed to effectively detect mechanical defects in hydrogen co-firing cylinders by utilizing the actual location or temperature of the flame generated during co-firing. Prior art literature

[0005] 1. KR 10-2393978 ("Hydrogen flame detection device and hydrogen flame detection system") 2. KR 10-2300744 ("OT-based wireless flame detection system for hydrogen fires and general fires") The problem to be solved

[0006] Therefore, the problem that the present invention aims to solve is to provide a monitoring system and method for detecting mechanical defects in a hydrogen co-firing cylinder by utilizing the flame generated in the co-firing environment. means of solving the problem

[0007] To solve the above problem, the present invention provides a hydrogen co-firing cylinder safety management system comprising: a camera that photographs a flame in a hydrogen co-firing cylinder in which a flame is generated according to hydrogen co-firing; a positioning unit that determines the position of the flame generated within the cylinder from an image input from the camera; a position storage unit in which a reference position of the flame within the hydrogen co-firing cylinder is stored; and a defect prediction unit that predicts a mechanical defect of the hydrogen co-firing cylinder based on the difference between the reference position and the determined position of the flame.

[0008] In one embodiment of the present invention, the camera is a thermal imaging camera.

[0009] In one embodiment of the present invention, the defect prediction unit predicts a higher probability of the mechanical defect as the difference between the reference position and the determined flame position increases.

[0010] In one embodiment of the present invention, the hydrogen co-firing cylinder safety management system is, It further includes an information transmission unit that transmits information warning of the mechanical defect to an administrator when the probability of the mechanical defect exceeds a preset level.

[0011] In one embodiment of the present invention, the defect prediction unit predicts mechanical defects of the hydrogen co-firing cylinder by applying a Convolutional Neural Network (CNN) model.

[0012] The present invention also provides a method for managing the safety of a hydrogen co-firing cylinder, performed by a computational device, comprising the steps of: acquiring an image of a flame by the device in a hydrogen co-firing cylinder in which a flame is generated according to hydrogen co-firing; determining the position of the flame from the acquired image; and predicting a mechanical defect of the hydrogen co-firing cylinder based on the difference between the determined position of the flame and a preset reference position of the flame.

[0013] In one embodiment of the present invention, the camera is a thermal imaging camera.

[0014] In one embodiment of the present invention, the step of predicting the mechanical defect is such that the probability of the mechanical defect is predicted to be higher as the difference between the reference position and the determined flame position increases.

[0015] In one embodiment of the present invention, the step of determining the position of the flame from the acquired image includes: applying a YOLOv5 model to the flame image acquired by the camera and storing the image; and extracting flame labeling coordinate values ​​x1 and x2 on the stored flame image, and the step of predicting the mechanical defect includes calculating that the probability of the mechanical defect increases as the flame moves left or right away from the center of the image using the x_min and x_max coordinates of the image and the x1 and x2 coordinates of the flame labeling.

[0016] In one embodiment of the present invention, the hydrogen co-firing cylinder safety management method further includes the step of transmitting warning information to an administrator when the predicted mechanical defect probability exceeds a preset standard. Effects of the invention

[0017] The safety management system and method according to the present invention can be utilized for monitoring the flame location in gas turbine facilities in a zone, and has the effect of reducing time and economic costs by reducing the possibility of mechanical defects caused by hydrogen co-firing power generation. Therefore, it can be utilized as a safety management system for power companies, steel mills, etc., that intend to carry out hydrogen co-firing power generation. Brief explanation of the drawing

[0018] FIG. 1 is a block diagram of a hydrogen co-firing cylinder safety management system according to one embodiment of the present invention. Figure 2 is a step diagram of the method for managing the safety of a hydrogen co-firing cylinder through the system described above. FIG. 3 is an overall design drawing of a system according to one embodiment of the present invention. Figure 4 shows photographs of the results of prototypes that actually implement the safety management system according to the present invention. Figure 5 is a picture of the Raspberry Pi 5 used to implement the flame monitoring system. Figure 6 is a photograph of the MLX90640 thermal imaging sensor used as a camera. Figure 7 is a photograph of a touch screen used for system display in a prototype implemented using a thermal imaging sensor. Figures 8 to 11 are photographs showing the actual implemented flame temperature colorbar and the probability of mechanical defects occurring according to the flame position, Figure 9 is a photograph showing a warning message, and Figure 10 is a photograph of the UI system. Specific details for implementing the invention

[0019] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

[0020] Before describing the present invention in detail, the terms and words used in this specification should not be interpreted as being unconditionally limited to their ordinary or dictionary meanings, and the inventor of the present invention may appropriately define and use the concepts of various terms to best describe their invention.

[0021] Furthermore, it should be understood that these terms or words should be interpreted in a meaning and concept consistent with the technical spirit of the present invention.

[0022] In other words, the terms used in this specification are used merely to describe preferred embodiments of the present invention and are not intended to specifically limit the content of the present invention.

[0023] It should be noted that these terms are defined in consideration of the various possibilities of the present invention.

[0024] Additionally, in this specification, singular expressions may include plural expressions unless the context clearly indicates a different meaning.

[0025] In addition, you should be aware that even if it is expressed in the plural, it may contain a singular meaning.

[0026] Throughout this specification, where it is stated that a component "includes" another component, unless specifically stated otherwise, this may mean that it does not exclude any other component but may include any other component.

[0027] Furthermore, in cases where it is stated that a component "exists inside or is installed in connection with" another component, this component may be installed in direct connection with or in contact with the other component.

[0028] In addition, they may be installed spaced apart at a certain distance, and in the case where they are installed spaced apart at a certain distance, there may be a third component or means for fixing or connecting the component to another component.

[0029] Meanwhile, it should be noted that the description of the third component or means mentioned above may be omitted.

[0030] On the other hand, if it is stated that one component is "directly connected" or "directly connected" to another component, it should be understood that there is no third component or means.

[0031] Likewise, other expressions describing the relationship between each component, such as “between” and “right between”, or “adjacent to” and “directly adjacent to”, should be interpreted as having the same intent.

[0032] In addition, terms such as “one side,” “other side,” “one side,” “other side,” “first,” “second,” etc., in this specification are used to ensure that one component can be clearly distinguished from another component.

[0033] However, it should be noted that the meaning of the component is not used restrictively by such terminology.

[0034] In addition, positional terms such as "top," "bottom," "left," and "right" used in this specification should be understood as indicating the relative position of the corresponding component in the drawing.

[0035] Furthermore, unless an absolute location is specified regarding their positions, terms related to these locations should not be understood as referring to absolute locations.

[0036] Furthermore, in the specification of the present invention, terms such as “…part,” “…unit,” “module,” and “device,” if used, refer to a unit capable of handling one or more functions or operations.

[0037] You should be aware that this can be implemented in hardware, software, or a combination of hardware and software.

[0038] In the drawings attached to this specification, the size, position, connection relationships, etc., of each component constituting the present invention may be described in a partially exaggerated, reduced, or omitted manner for the convenience of explanation or to sufficiently clearly convey the concept of the present invention, and therefore, the proportions or scale may not be strictly accurate.

[0039] In addition, in describing the present invention below, detailed descriptions of components that are deemed to unnecessarily obscure the essence of the invention, such as known technologies including prior art, may be omitted.

[0040] To solve the aforementioned problem, the present invention provides a system for monitoring flame temperature and predicting and monitoring the probability of mechanical defects occurring according to flame position during the process of converting an existing gas turbine to hydrogen co-firing.

[0041] FIG. 1 is a block diagram of a hydrogen co-firing cylinder safety management system according to one embodiment of the present invention.

[0042] Referring to FIG. 1, a hydrogen co-firing cylinder safety management system according to one embodiment of the present invention includes a camera (100) that photographs the flame generated during combustion in a hydrogen co-firing cylinder in which a flame is generated according to hydrogen co-firing. In particular, in one embodiment of the present invention, the camera is a thermal imaging camera, and a thermal imaging sensor is used in consideration of an environment where the location of the flame cannot be visually confirmed because the color of the flame disappears as the mixing ratio of hydrogen increases.

[0043] A system according to one embodiment of the present invention includes a positioning unit (200) that determines the position of the flame generated within the cylinder from an image input from the camera.

[0044] The above positioning unit (200) performs labeling to distinguish between flames and others in an image, and extracts the coordinates of the point labeled as a flame. To this end, in one embodiment of the present invention, a YOLOv5 model was trained using image and coordinate data, which is due to its accuracy and fast computation speed.

[0045] Afterwards, the trained model was applied to the Raspberry Pi 5 using the YOLOv5 model to display the location.

[0046] A system according to one embodiment of the present invention includes a position storage unit (300) in which a reference position of the flame within the hydrogen co-firing cylinder is stored. This means that the flame generation position when the cylinder is in a stable state becomes the reference position, and the center of the cylinder can become the reference position.

[0047] A system according to one embodiment of the present invention includes a defect prediction unit (400) that predicts mechanical defects of the hydrogen mixed-fuel cylinder based on the difference between the reference position and the determined flame position. The defect prediction unit (400) calculates mechanical defects of the hydrogen mixed-fuel cylinder by applying a Convolutional Neural Network (CNN) model. In one embodiment of the present invention, using the x_min and x_max coordinates of the image and the x1 and x2 coordinates of the flame labeling, the probability of mechanical defects is calculated to be 0 to 100% as the flame moves further to the left and right from the center position of the image (i.e., the reference position).

[0048] To explain this more specifically, x1 and x2 are the x-axis coordinate values ​​of the two ends of the area box identified as a flame in the image. If we denote the two endpoints on the x-axis relative to the center of the image as x_min and x_max, respectively, the center of the image becomes the midpoint between x_min and x_max.

[0049] Subsequently, the probability of mechanical defects increases as the midpoint between x1 and x2 moves further to the left and right from the center of the image, and becomes 0 when the midpoint between x1 and x2 coincides with the center. In particular, the x-value of the flame center generated during the co-firing of the present invention is considered to be related to mechanical defects, and the probability of mechanical defects is predicted from this.

[0050] A system according to one embodiment of the present invention may further include an information transmission unit (500) for transmitting information indicating the risk to a manager's terminal when the predicted mechanical defect probability exceeds a preset threshold (e.g., 50%).

[0051] Figure 2 is a step diagram of the method for managing the safety of a hydrogen co-firing cylinder through the system described above.

[0052] Referring to FIG. 2, a method for managing the safety of a hydrogen fuel cylinder performed by a computationally capable device according to an embodiment of the present invention includes: a step of obtaining an image of a flame from a hydrogen fuel cylinder in which a flame is generated according to hydrogen fueling by the device; a step of determining the position of the flame from the obtained image; and a step of predicting a mechanical defect of the hydrogen fuel cylinder according to the difference between the determined position of the flame and a preset reference position of the flame.

[0053] At this time, the step of predicting the mechanical defect is such that the probability of the mechanical defect is predicted to be higher as the difference between the reference position and the determined position of the flame increases, and in particular, the step of determining the position of the flame from the acquired image includes the step of applying the YOLOv5 model to the flame image acquired by the camera and saving the image; and the step of extracting the flame labeling coordinate values ​​x1 and x2 on the saved flame image, and the step of predicting the mechanical defect calculates that the probability of the mechanical defect increases as the flame moves further to the left and right from the center of the image using the x_min and x_max coordinates of the image and the x1 and x2 coordinates of the flame labeling.

[0054] FIG. 3 is an overall design drawing of a system according to one embodiment of the present invention.

[0055] Referring to Figure 3, a Raspberry Pi system for observing the flame position of a combustion device was created and displayed on a touch screen. The system displayed on the touch screen includes a color-bar of the flame temperature, the probability of mechanical defects occurring according to the combustion position, and a warning message.

[0056] FIGS. 4 to 7 are photographs of the results of a prototype that actually implements the safety management system according to the present invention, FIG. 5 is a Raspberry Pi 5 used to implement the flame monitoring system, FIG. 6 is a photograph of an MLX90640 thermal imaging sensor used as a camera and a touch screen used for system display in the prototype implemented using the thermal imaging sensor.

[0057] Figures 8 to 11 are photographs showing the actual implemented flame temperature colorbar and the probability of mechanical defects occurring according to the flame position, Figure 9 is a photograph showing a warning message, and Figure 10 is a photograph of the UI system.

[0058] As explained above, the safety management system and method according to the present invention can be utilized for monitoring the flame location in gas turbine facilities in a zone, and has the effect of reducing the possibility of mechanical defects caused by hydrogen co-firing power generation, thereby saving time and economic costs. Therefore, it can be utilized as a safety management system for power companies, steel mills, etc., that intend to carry out hydrogen co-firing power generation.

Claims

Claim 1 A hydrogen mixing cylinder safety management system comprising: a camera for photographing a flame in a hydrogen mixing cylinder in which a flame is generated according to hydrogen mixing; a positioning unit for determining the position of the flame generated within the cylinder from an image input from the camera; a position storage unit for storing a reference position of the flame within the hydrogen mixing cylinder; and a defect prediction unit for predicting a mechanical defect of the hydrogen mixing cylinder based on the difference between the reference position and the determined position of the flame. Claim 2 A hydrogen co-firing cylinder safety management system according to claim 1, characterized in that the camera is a thermal imaging camera. Claim 3 In Article 1, A hydrogen co-firing cylinder safety management system characterized by the above-mentioned defect prediction unit predicting a higher probability of the mechanical defect as the difference between the above-mentioned reference position and the above-mentioned determined flame position increases. Claim 4 In Clause 2, the above hydrogen co-firing cylinder safety management system is, A hydrogen co-firing cylinder safety management system characterized by further including an information transmission unit that transmits information warning of the mechanical defect to an administrator when the probability of the mechanical defect exceeds a preset level. Claim 5 In Article 1, A hydrogen co-firing cylinder safety management system characterized by the above defect prediction unit predicting mechanical defects of the above hydrogen co-firing cylinder by applying a CNN (Convolutional Neural Network) model. Claim 6 A method for managing the safety of a hydrogen fuel cylinder performed by a computational device, comprising: a step of acquiring an image of a flame by the device in a hydrogen fuel cylinder in which a flame is generated according to hydrogen fuel; a step of determining the position of the flame from the acquired image; and a step of predicting a mechanical defect of the hydrogen fuel cylinder according to the difference between the determined position of the flame and a preset reference position of the flame. Claim 7 A method for safety management of a hydrogen co-firing cylinder, characterized in that, in claim 6, the camera is a thermal imaging camera. Claim 8 A method for safety management of a hydrogen co-firing cylinder according to claim 6, wherein the step of predicting the mechanical defect is characterized in that the probability of the mechanical defect is predicted to be higher as the difference between the reference position and the determined flame position increases. Claim 9 In Paragraph 5, The step of determining the position of the flame from the above-acquired image is, A step of applying the YOLOv5 model to the flame image acquired by the camera and saving the image; The method includes the step of extracting flame labeling coordinate values ​​x1 and x2 on the stored flame image, A method for managing the safety of a hydrogen co-firing cylinder, characterized in that the step of predicting the above mechanical defect includes the step of calculating that the probability of the above mechanical defect increases as the flame moves left or right away from the center of the image, using the x_min and x_max coordinates of the image and the x1 and x2 coordinates of the flame labeling. Claim 10 In Clause 6, the above-mentioned hydrogen co-firing cylinder safety management method is, A method for safety management of a hydrogen co-fueling cylinder, further comprising the step of transmitting warning information to an administrator when the above-mentioned predicted mechanical defect probability exceeds a preset standard.

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