Safety monitoring system for heating process of heating furnace
By installing a flame monitoring and alarm system during the heating furnace heating process, the flame status of the oven start-up heating burner is monitored in real time, which solves the safety hazards in the low temperature stage during the heating furnace heating process, and improves the work safety of operators and production safety.
Patent Information
- Application Number
- CN202420703915.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-07
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-04-07
AI Technical Summary
During the low temperature stage of the heating furnace, there are safety hazards such as burner defire and gas leakage. Due to the long heating cycle, the operators are invested heavily, which can easily lead to fatigue and safety accidents.
A safety monitoring system for heating furnace heating process is designed, including a flame monitoring system, a flame signal/image transmission system and a flame alarm system. The flame monitoring system installed outside the heating furnace is monitored in real time by real-time the flame status of the oven start-up heating burner, and is connected to the flame alarm system through the data hub system to achieve remote safety monitoring and alarm.
It effectively reduces the number of monitoring operators, reduces the working intensity and tension of operators, improves operating comfort, avoids the omission of manual monitoring, reduces the possibility of gas leakage, and ensures the safe use of gas and the safe operation of production.
Smart Images
Figure CN222670719U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of industrial heating furnaces and relates to a heating furnace heating process safety monitoring system. Background Art
[0002] After the heating furnace is built for the first time, the furnace body refractory materials will be baked to remove free water, crystal water, etc. in the refractory materials to ensure the performance of the refractory materials and increase the life of the heating furnace refractory materials. The baking cycle depends on the refractory materials used in the furnace body, and the baking cycle is usually 21 days.
[0003] The heating furnace is in normal production. In order to ensure the normal operation of the equipment or clean the iron oxide scale in the furnace, the furnace will be stopped regularly for maintenance and slag removal to ensure stable operation of the equipment, normal combustion of the burner, and uniform heating of the billet. The furnace is usually shut down for maintenance at an interval of about 6 months, and the shutdown time is generally fixed at 4-6 days. After the shutdown, the furnace will face the process of heating up, which usually takes 3-4 days to heat the heating furnace to ~1250℃.
[0004] The heating process of the heating furnace after the first construction or the heating process of the heating furnace after the shutdown and maintenance can usually be divided into three stages: low temperature stage, transition stage, and high temperature stage. The low temperature stage generally refers to the range from room temperature to ~600℃. This heating process requires the heating burner of the heating furnace to heat and heat up. Because the heating furnace is in a low temperature state, it is easy for the burner to be out of flame and gas leakage to occur, which poses a safety hazard. In addition, the heating furnace workshops of domestic steel enterprises use manual on-site duty observation during the low temperature heating process. Due to the long heating cycle, the number of operators involved is large, and it is easy to cause strong fatigue of operators. The safety risk factor of gas use is high, and safety accidents are more likely to occur. Utility Model Content
[0005] In view of this, the purpose of the utility model is to provide a heating furnace heating process safety monitoring system to solve the low-temperature stage safety monitoring problem of the heating process of the heating furnace after it is first built or the heating process of the heating furnace after it is shut down for maintenance.
[0006] In order to achieve the above object, the utility model provides the following technical solutions:
[0007] A heating furnace heating process safety monitoring system, the heating furnace comprises a heating furnace body, a furnace start-up heating burner installed in the heating furnace body, and a charging furnace door and a discharging furnace door located at both ends of the heating furnace body;
[0008] The safety monitoring system includes a flame monitoring system, a flame signal / image transmission system and a flame alarm system. The flame monitoring system is installed outside the heating furnace and monitors the flame state of the heating burner for starting the furnace through the door of the charging furnace door or the door of the discharging furnace door of the heating furnace.
[0009] The flame monitoring system is connected to the flame alarm system through a flame signal / image transmission system to transmit the flame status of the baking furnace startup heating burner to the flame alarm system through digital signals and flame image signals, so that the flame alarm system can safely monitor and alarm the flame status of the baking furnace startup heating burner.
[0010] Furthermore, a data center system is provided between the flame monitoring system and the flame alarm system.
[0011] Furthermore, the flame monitoring system includes a flame detector and a flame signal converter connected to the flame detector, the flame detector is used to monitor the flame state of the furnace start-up heating burner, the flame signal converter converts the flame image signal into a digital signal, and the flame detector and the flame signal converter are both connected to the flame signal / image transmission system to transmit both the digital signal and the flame image signal to the data center system.
[0012] Furthermore, the flame alarm system includes an operating console, and a flame operating console sound and light alarm system and a flame monitoring screen HMI alarm system arranged on the operating console, which are used to receive digital signals and flame image signals respectively.
[0013] Furthermore, the flame detector is a high-speed camera.
[0014] Furthermore, the furnace start-up heating burners are 2n sets, and are symmetrically arranged on the rolling mill side and the non-rolling mill side of the heating furnace;
[0015] There are two sets of flame monitoring systems, namely a rolling mill side flame monitoring system and a non-rolling mill side flame monitoring system. The rolling mill side flame monitoring system is arranged obliquely toward the non-rolling mill side of the heating furnace to monitor the flame state of the baking furnace startup heating burner on the non-rolling mill side. The non-rolling mill side flame monitoring system is arranged obliquely toward the rolling mill side of the heating furnace to monitor the flame state of the baking furnace startup heating burner on the rolling mill side.
[0016] Furthermore, the rolling mill side flame monitoring system and the non-rolling mill side flame monitoring system are both arranged outside the heating furnace near one end of the charging furnace door.
[0017] Furthermore, the flame alarm system has 2n flame alarm subsystems to perform safety monitoring and alarm on the flame states of the corresponding furnace startup heating burners.
[0018] The beneficial effects of the utility model are:
[0019] The utility model provides a heating furnace heating process safety monitoring system, which is used for the heating process of the heating furnace after it is first built or the low-temperature stage of the heating process of the heating furnace when it is restarted after being shut down for maintenance. It can effectively reduce the number of monitoring operators, reduce the work intensity and tension of the monitoring operators, improve their work comfort, avoid omissions in manual monitoring, eliminate the possibility of gas leakage, and effectively remind the operator of the flame state of the heating burner for heating when the heating furnace is started, so as to ensure safe use of gas and safe production operation.
[0020] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and research, or can be taught from the practice of the present invention to some extent. The objectives and other advantages of the present invention can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be described in detail below in conjunction with the accompanying drawings, in which:
[0022] Figure 1 The figure is a structural diagram of a heating furnace heating process safety monitoring system.
[0023] Figure markings: 1-heating furnace body; 2-continuous production heating system; 3-baking furnace start-up heating system; 3.1-first baking furnace start-up heating burner; 3.2-second baking furnace start-up heating burner; 3.3-third baking furnace start-up heating burner; 3.4-fourth baking furnace start-up heating burner; 3.5-fifth baking furnace start-up heating burner; 3.6-sixth baking furnace start-up heating burner; 4-flame monitoring system; 5-flame signal / image transmission system; 6-data central system; 7-operating console; 8-flame operating console sound and light alarm system; 9-flame monitoring screen HMI alarm system. DETAILED DESCRIPTION
[0024] The following describes the implementation of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner. The following embodiments and the features in the embodiments can be combined with each other without conflict.
[0025] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present utility model. In order to better illustrate the embodiments of the present utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.
[0026] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "back" and the like indicate directions or positional relationships, they are based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.
[0027] See also Figure 1 The existing heating furnace includes a heating furnace body 1, a continuous production heating system 2 and a furnace drying and starting heating system 3. The heating furnace body 1 includes an end wall steel structure, a furnace bottom steel structure, a side wall steel structure, a furnace top steel structure, furnace body refractory materials and furnace doors (charging furnace door and unloading furnace door) at both ends of the heating furnace body 1;
[0028] The continuous production heating system 2 includes a continuous production heating burner, an empty gas pipeline, a pipeline valve, a pipeline flow detection device, etc.; the schematic diagram only shows the continuous production heating burner, and does not show the empty gas pipeline, the pipeline valve, the pipeline medium flow detection device, etc.;
[0029] The oven start-up heating system 3 includes an oven start-up heating burner, an empty gas pipeline, a pipeline valve, a pipeline flow detection device, etc.; the schematic diagram only shows the oven start-up heating burner, and does not show the empty gas pipeline, the pipeline valve, the pipeline medium flow detection device and other related structures;
[0030] The heating furnace includes a conventional combustion heating furnace, a regenerative combustion heating furnace, and also includes a walking beam heating furnace and a pusher steel heating furnace.
[0031] The heating process of the heating furnace after the first construction or the heating process of the heating furnace after the shutdown and maintenance can usually be divided into three stages: low temperature stage, transition stage, and high temperature stage. The low temperature stage generally refers to the range from room temperature to ~600℃. In this heating process, the heating furnace adopts the heating burner of the heating system 3 to supply heat. The temperature in the furnace is ensured by adjusting the valve opening on the air gas pipeline connected to the heating burner. The valve opening is directly proportional to the temperature in the furnace. In this process, the charging furnace door and the discharging furnace door of the heating furnace are all opened. At this time, the flame state of the heating burner in the furnace can be directly observed through the charging furnace door and the discharging furnace door from the outside of the heating furnace. In the prior art, it is usually observed in real time by the naked eye by the operator.
[0032] The key point of this application is to provide a safety monitoring system for the heating furnace heating process, including a flame monitoring system 4 and a flame alarm system connected to the flame monitoring system. The flame monitoring system is installed outside the heating furnace and monitors the flame state of the furnace start-up heating burner through the door of the heating furnace loading furnace door or the door of the discharging furnace door.
[0033] A data central system 6 is also provided between the flame monitoring system 4 and the flame alarm system. The flame monitoring system 4 is connected to the data central system 6 via a flame signal / image transmission system 5, and the data central system 6 is further connected to the flame alarm system via a flame signal / image transmission system 5. By providing the data central system 6, remote safety monitoring of the heating furnace heating process and rapid data processing can be achieved.
[0034] Specifically, the flame monitoring system 4 includes a flame detector and a flame signal converter connected to the flame detector, the flame detector is used to monitor the flame state of the furnace start-up heating burner, and transmit the corresponding flame image signal to the flame signal converter, the flame signal converter converts the flame image into digital signals "0" and "1", respectively indicating that the flame is extinguished and the flame is normal;
[0035] The flame detector can be configured as a high-speed camera to monitor the flame state of the furnace start-up heating burner in real time.
[0036] The flame signal / image transmission system 5 includes a flame image transmission system and a flame signal transmission system, which are used to transmit the flame image signal and the digital signal of the flame detector and the flame signal converter to the data central system 6 respectively.
[0037] The flame alarm system comprises an operating console 7 , a flame operating console sound and light alarm system 8 and a flame monitoring screen HMI alarm system 9 arranged on the operating console 7 .
[0038] The data central system 6 transmits the digital signal and the flame image signal to the flame operating console sound and light alarm system 8 and the flame monitoring screen HMI alarm system 9 respectively through the flame signal / image transmission system 5 .
[0039] The flame operating console sound and light alarm system 8 comprises a flame signal identification program and a flame sound and light alarm system, and the flame monitoring screen HMI alarm system 9 comprises a flame screen HMI display system and a flame screen HMI alarm system.
[0040] In this embodiment, 6 sets of furnace startup heating burners 3 are provided, namely the first furnace startup heating burner 3.1, the second furnace startup heating burner 3.2, the third furnace startup heating burner 3.3, the fourth furnace startup heating burner 3.4, the fifth furnace startup heating burner 3.5 and the sixth furnace startup heating burner 3.6, wherein the first furnace startup heating burner 3.1, the second furnace startup heating burner 3.2 and the third furnace startup heating burner 3.3 are arranged on the rolling mill side of the heating furnace, and the fourth furnace startup heating burner 3.4, the fifth furnace startup heating burner 3.5 and the sixth furnace startup heating burner 3.6 are arranged on the non-rolling mill side of the heating furnace.
[0041] In other embodiments, the furnace start-up heating burners 3 may also be provided in 4 sets or 8 sets, which are respectively provided on the rolling mill side and the non-rolling mill side of the heating furnace.
[0042] The flame monitoring system 4 consists of two sets, namely a rolling mill side flame monitoring system and a non-rolling mill side flame monitoring system. The rolling mill side flame monitoring system is arranged obliquely toward the non-rolling mill side of the heating furnace to monitor the flame states of the fourth baking furnace startup heating burner 3.4, the fifth baking furnace startup heating burner 3.5 and the sixth baking furnace startup heating burner 3.6, and the non-rolling mill side flame monitoring system is arranged obliquely toward the rolling mill side of the heating furnace to monitor the flame states of the first baking furnace startup heating burner 3.1, the second baking furnace startup heating burner 3.2 and the third baking furnace startup heating burner 3.3.
[0043] Correspondingly, the flame operating console sound and light alarm system 8 and the flame monitoring screen HMI alarm system 9 respectively have multiple flame sound and light alarm subsystems and flame screen HMI display subsystems corresponding to the first furnace start-up heating burner 3.1, the second furnace start-up heating burner 3.2, the third furnace start-up heating burner 3.3, the fourth furnace start-up heating burner 3.4, the fifth furnace start-up heating burner 3.5 and the sixth furnace start-up heating burner 3.6.
[0044] The monitoring method of the heating furnace heating process safety monitoring system is as follows:
[0045] 1) When the heating furnace is in the process of heating up, the furnace start-up heating burners 3 on the rolling mill side and the non-rolling mill side operate normally, the flame monitoring system on the rolling mill side and the flame monitoring system on the non-rolling mill side will use the flame signal / image transmission system 5 to transmit the digital signal "1" and the normal flame combustion image to the data central system 6, and the data central system 6 will transmit the corresponding digital signal "1" and the normal flame combustion image to the operating console 7. The flame operating console sound and light alarm system 8 will remain silent after receiving the digital signal "1", and the flame monitoring screen HMI alarm system 9 will receive the flame combustion image and display the image in the flame screen HMI display system;
[0046] 2) When the heating furnace is in the process of heating up, one or more of the heating burners 3 on the rolling mill side and the non-rolling mill side go out, and the flame monitoring system 4 on the corresponding side transmits the digital signal "0" and the flame extinction image to the data central system 6 by means of the flame signal / image transmission system 5. The data central system 6 transmits the corresponding digital signal "0" and the flame extinction image to the operating console 7. The flame operating console sound and light alarm system 8 receives the digital signal "0" and makes a buzzing sound and keeps flashing red, continuously alarming. The flame monitoring screen HMI alarm system receives the flame extinction image and displays the image on the flame screen HMI display system. At the same time, the flame screen HMI alarm system is activated so that the flame screen HMI display system displays an "exclamation mark" alarm and other reminders.
[0047] It should be noted that the heating process includes the heating process after the heating furnace is first built and the heating process when the heating furnace is started after being shut down for maintenance. The heating process specifically refers to the range from room temperature to 600°C, excluding 600°C to 1250°C, and during the heating process, the charging furnace door and the discharging furnace door of the heating furnace are all open. The flame monitoring system 4 arranged outside the heating furnace can directly monitor the flame state of the heating burner 3 for starting up the baking furnace in the heating furnace, while the continuous production heating burner does not supply heat at this time (i.e., no flame is emitted, thereby not affecting the monitoring of the heating burner 3 for starting up the baking furnace by the flame monitoring system 4).
[0048] Secondly, the flame monitoring system 4, flame signal / image transmission system 5, data center system 6, operation console 7, flame operation console sound and light alarm system 8 and flame monitoring screen HMI alarm system 9 used in this application can all be purchased from mature systems on the market and adapted for use. The key to this application is to combine and configure each system to form a system for safety monitoring of the heating furnace heating process, rather than the specific structure or principle of each subsystem, so the specific working principle will not be repeated;
[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the utility model.
Claims
1. A heating furnace heating process safety monitoring system, the heating furnace comprises a heating furnace body, a furnace start-up heating burner installed in the heating furnace body, and a charging furnace door and a discharging furnace door located at both ends of the heating furnace body, characterized in that: The safety monitoring system includes a flame monitoring system, a flame signal / image transmission system and a flame alarm system. The flame monitoring system is installed outside the heating furnace and monitors the flame state of the heating burner for starting the furnace through the door of the charging furnace door or the door of the discharging furnace door of the heating furnace. The flame monitoring system is connected to the flame alarm system through a flame signal / image transmission system to transmit the flame status of the baking furnace startup heating burner to the flame alarm system through digital signals and flame image signals, so that the flame alarm system can safely monitor and alarm the flame status of the baking furnace startup heating burner.
2. The heating furnace heating process safety monitoring system according to claim 1 is characterized in that: A data center system is also provided between the flame monitoring system and the flame alarm system.
3. The heating furnace heating process safety monitoring system according to claim 2 is characterized in that: The flame monitoring system includes a flame detector and a flame signal converter connected to the flame detector, the flame detector is used to monitor the flame state of the furnace start-up heating burner, the flame signal converter converts the flame image signal into a digital signal, and the flame detector and the flame signal converter are both connected to the flame signal / image transmission system to transmit both the digital signal and the flame image signal to the data center system.
4. The heating furnace heating process safety monitoring system according to claim 3 is characterized in that: The flame alarm system comprises an operating console, and a flame operating console sound and light alarm system and a flame monitoring screen HMI alarm system arranged on the operating console, which are used to receive digital signals and flame image signals respectively.
5. The heating furnace heating process safety monitoring system according to claim 4 is characterized in that: The flame detector is a high-speed camera.
6. The heating furnace heating process safety monitoring system according to claim 1 is characterized in that: The heating burners for starting the drying furnace are 2n sets, and are symmetrically arranged on the rolling mill side and the non-rolling mill side of the heating furnace; There are two sets of flame monitoring systems, namely a rolling mill side flame monitoring system and a non-rolling mill side flame monitoring system. The rolling mill side flame monitoring system is arranged obliquely toward the non-rolling mill side of the heating furnace to monitor the flame state of the baking furnace startup heating burner on the non-rolling mill side. The non-rolling mill side flame monitoring system is arranged obliquely toward the rolling mill side of the heating furnace to monitor the flame state of the baking furnace startup heating burner on the rolling mill side.
7. The heating furnace heating process safety monitoring system according to claim 6 is characterized in that: The rolling mill side flame monitoring system and the non-rolling mill side flame monitoring system are both arranged outside the heating furnace near one end of the charging furnace door.
8. The heating furnace heating process safety monitoring system according to claim 6 is characterized in that: The flame alarm system has 2n flame alarm subsystems to perform safety monitoring and alarm on the flame states of the corresponding furnace start-up heating burners.