Automatic temperature measuring system for coking furnace carbonization chamber furnace wall

Abstract

The invention discloses a coking furnace carbonization chamber furnace wall automatic temperature measurement system, and particularly relates to the technical field of coking production equipment, the coking furnace carbonization chamber furnace wall automatic temperature measurement system comprises a plurality of temperature measurement optical fibers installed on a furnace wall of a coking furnace, the temperature measurement optical fibers are laid along a certain area of the surface of the furnace wall to form a distributed temperature measurement network, and temperature data T1, T2, T3,..., Tn of a plurality of temperature measurement points are obtained; collected temperature data are transmitted to a signal processing unit, the data are preprocessed, and temperature field reconstruction is carried out according to the temperature data. The temperature distribution information of the whole coking furnace wall can be obtained by performing system processing on the high-temperature-resistant photometric optical fiber in the furnace wall within a certain range according to the obtained temperature data, so that the temperature measurement in the high-temperature coke oven carbonization chamber is realized, the problems that a conventional method cannot measure and is limited in the temperature obtaining process are reduced, and the measurement efficiency is improved. And the temperature in the coke oven carbonization chamber can be conveniently monitored.

Description

Technical Field

[0001] The present invention relates to the technical field of coking production equipment, and more specifically, to an automatic temperature measurement system for the furnace wall of a coking chamber in a coking furnace. Background Art

[0002] The effective operation of a coke oven depends on the temperature distribution in the furnace. The temperature and its distribution in the coking chamber of the coke oven are crucial for coke production. Mastering the accurate temperature can effectively ensure the quality of coke, reduce costs, improve the production efficiency of the coke oven, and extend the service life of the coke oven. It would be ideal if the temperature of the side wall of the coking chamber in the coke oven could be directly measured. However, due to the extremely high temperature in the coking chamber of the coke oven and the limitations of the structure of the coking chamber, it is simply impossible to measure the temperature of the coking chamber in the coke oven using conventional methods. Whether using contact or non-contact temperature measurement methods, it is very difficult to measure the temperature of the coking chamber in the coke oven. Summary of the Invention

[0003] To achieve the above object, the present invention provides the following technical solution: An automatic temperature measurement system for the furnace wall of a coking chamber in a coking furnace, including a plurality of temperature measurement optical fibers installed on the furnace wall of the coking furnace. The temperature measurement optical fibers are laid along a certain area on the surface of the furnace wall to form a distributed temperature measurement network, obtaining temperature data T1, T2, T3,..., Tn at multiple temperature measurement points, transmitting the collected temperature data to a signal processing unit, preprocessing the data, and reconstructing the temperature field based on the temperature data.

[0004] In a preferred embodiment, the temperature measurement optical fiber is a fully solid-state high-temperature resistant optical fiber, fixed on the furnace wall of the furnace through a fixture, and the fixing points are evenly distributed. The surface of the temperature measurement optical fiber is coated with a high-temperature resistant coating.

[0005] In a preferred embodiment, the signal processing unit preprocesses the temperature data, including removing noise and outliers, correcting the temperature data, eliminating systematic errors, and using linear interpolation to fill in missing and damaged data points. Specifically:

[0006]

[0007] Among them, χ is the coordinate information of the point to be calculated, γ is the temperature value corresponding to the interpolation point χ, the temperature value obtained by linear interpolation calculation, γ0 is the temperature value of a known data point, γ1 is the temperature value of another known data point, χ0 is the coordinate information corresponding to a known data point, and χ1 is the coordinate information corresponding to another known data point.

[0008] In a preferred embodiment, the coordinate information corresponding to χ, χ0, and χ1 is one of position information or time information.

[0009] In a preferred embodiment, interpolation calculations are performed based on the acquired temperature data to obtain the temperature values at unknown points, and a three-dimensional temperature field within the furnace wall is constructed based on the interpolated and filled data.

[0010] In a preferred embodiment, the interpolation calculation performed is specifically as follows:

[0011]

[0012] Wherein, is the temperature value at the point to be calculated, λ i is the weight coefficient, representing the distance between the i-th known data point and the calculation point, Z(χ i ) is the temperature value of the i-th known data point, and n is the number of temperature measurement points.

[0013] Technical effects and advantages of the present invention:

[0014] By using high-temperature-resistant optical fibers for temperature measurement within a certain range in the furnace wall and performing system processing based on the acquired temperature data, the temperature distribution information of the entire coking furnace wall can be obtained, realizing temperature measurement in the high-temperature carbonization chamber of the coke oven, reducing problems that cannot be measured and are restricted by conventional methods during the temperature acquisition process, and facilitating temperature monitoring in the carbonization chamber of the coke oven. Specific embodiments

[0015] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0016] The present invention provides an automatic temperature measurement system for the carbonization chamber wall of a coking furnace, including a plurality of temperature measurement optical fibers installed on the furnace wall of the coking furnace. The temperature measurement optical fibers are laid along a certain area on the surface of the furnace wall to form a distributed temperature measurement network, obtaining temperature data T1, T2, T3,..., Tn at multiple temperature measurement points, transmitting the collected temperature data to a signal processing unit, preprocessing the data, and reconstructing the temperature field based on the temperature data.

[0017] Based on the above, the temperature measurement optical fibers only need to be laid in a certain area within the furnace wall, without covering the entire inner wall of the furnace wall, and only need to form a distributed temperature measurement network within the laid area.

[0018] Further, the temperature-measuring optical fiber is an all-solid high-temperature-resistant optical fiber, which is fixed on the furnace wall of the furnace wall through a fixture, and the fixing points are evenly distributed. The surface of the temperature-measuring optical fiber is coated with a high-temperature-resistant coating, such as polyimide or a metal coating. These materials can remain stable at high temperatures, protect the optical fiber from damage, and maintain good mechanical and chemical stability.

[0019] Further, the signal processing unit preprocesses the temperature data, including removing noise and outliers, correcting the temperature data to eliminate systematic errors, and using linear interpolation to fill in missing and damaged data points. Specifically:

[0020]

[0021] Among them, χ is the coordinate information of the point to be calculated, γ is the temperature value corresponding to the interpolation point χ, the temperature value obtained by linear interpolation, γ0 is the temperature value of a known data point, γ1 is the temperature value of another known data point, χ0 is the coordinate information corresponding to a known data point, and χ1 is the coordinate information corresponding to another known data point.

[0022] The coordinate information corresponding to χ, χ0, and χ1 is one of position information or time information.

[0023] Based on the above, when χ is position information, χ0 and χ1 also remain unified as position information. When χ is time information, χ0 and χ1 remain unified as time information.

[0024] Further, the position information is specifically that the temperature-measuring optical fiber is laid on the surface of the furnace wall to form a distributed temperature-measuring network. A single temperature-measuring point in the temperature-measuring network is a single position information. The position information is calculated based on the overall area inside the furnace wall, using a unified measurement unit to keep the units of the position information unified, which is convenient for subsequent calculations;

[0025] The time information is the system timestamp corresponding to each data when the corresponding temperature-measuring point obtains the corresponding temperature data such as T1, T2, T3,..., Tn.

[0026] Based on the above, after obtaining the temperature data T1, T2, T3,..., Tn corresponding to the corresponding temperature-measuring points, the temperature data at any position between two adjacent temperature-measuring points is obtained based on the known temperature data.

[0027] According to the above temperature data, three-dimensional temperature field data corresponding to the furnace wall is constructed to realize real-time temperature measurement of the coking furnace wall.

[0028] Based on the obtained temperature data, interpolation calculation is performed to obtain the temperature value of the unknown point, and a three-dimensional temperature field inside the furnace wall is constructed based on the data filled in by the above interpolation.

[0029] The specific interpolation calculation performed is as follows:

[0030]

[0031] Among them, is the temperature value at the point where the calculation is required, λ i is the weight coefficient, representing the distance between the known data point and the calculation point, Z(χ i ) is the temperature value of the known data point, and n is the number of temperature measurement points.

[0032] Based on the above, after offline interpolation to obtain data at different temperature points, and then through the overall temperature data, calculate the temperature data at other locations within the entire furnace wall to supplement the constructed three-dimensional temperature field data, so that the temperature measurement optical fiber only needs to be laid in some areas within the furnace wall. By performing system processing on the obtained temperature data, the temperature distribution information of the entire coking furnace wall can be obtained, realizing temperature measurement in the high-temperature coking chamber of the coke oven, reducing the problems that cannot be measured and are restricted by conventional methods during the temperature acquisition process, and facilitating the temperature monitoring of the coking chamber of the coke oven.

[0033] Finally, the following points should be noted: First, in the description of the present application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, which can be mechanical connection or electrical connection, or the communication inside two components, and can be directly connected. "Up", "down", "left", "right", etc. are only used to represent the relative position relationship. When the absolute position of the described object changes, the relative position relationship may change;

[0034] Second: In the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are involved. For other structures, reference can be made to the general design. Without conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0035] Finally: The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An automatic temperature measurement system for the wall of a coking furnace carbonization chamber, characterized in that: The method comprises a plurality of temperature measuring optical fibers installed on the furnace wall of the coking furnace. The temperature measuring optical fibers are laid along a certain area of ​​the furnace wall surface to form a distributed temperature measurement network, and the temperature data T1, T2, T3, ..., Tn of multiple temperature measuring points are obtained. The collected temperature data are transmitted to a signal processing unit, the data are preprocessed, and the temperature field is reconstructed according to the temperature data.

2. The automatic temperature measurement system for the wall of the coking furnace carbonization chamber according to claim 1 is characterized in that: The temperature measuring optical fiber is a fully solid-state high-temperature resistant optical fiber, which is fixed on the furnace wall by a clamp, with the fixing points evenly distributed, and the surface of the temperature measuring optical fiber is coated with a high-temperature resistant coating layer.

3. The automatic temperature measurement system for the wall of the coking furnace carbonization chamber according to claim 1 is characterized in that: The signal processing unit preprocesses the temperature data, including removing noise and outliers, correcting the temperature data, eliminating system errors, and using linear interpolation to fill in missing and damaged data points, specifically: Among them, χ is the coordinate information of the point to be calculated, γ is the temperature value corresponding to the interpolation point χ, the temperature value obtained by linear interpolation calculation, γ0 is the temperature value of a known data point, γ1 is the temperature value of another known data point, χ0 is the coordinate information corresponding to a known data point, and χ1 is the coordinate information of another known data point.

4. The automatic temperature measurement system for the wall of the coking furnace carbonization chamber according to claim 3 is characterized in that: The coordinate information corresponding to χ, χ0 and χ1 is one of position information and time information.

5. The automatic temperature measurement system for the wall of the coking furnace carbonization chamber according to claim 3 is characterized in that: Based on the acquired temperature data, interpolation calculation is performed to obtain the temperature value of the unknown point, and based on the above interpolated data, the three-dimensional temperature field in the furnace wall is constructed.

6. The automatic temperature measurement system for the wall of the coking furnace carbonization chamber according to claim 5 is characterized in that: The interpolation calculation is as follows: in, is the temperature value at the point to be calculated, λ i is the weight coefficient, which represents the distance between the i-th known data point and the calculation point, Z(χ i ) is the temperature value of the i-th known data point, and n is the number of temperature measurement points.

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