A method, system and device for monitoring the curvature of coke oven columns

Abstract

The present invention provides a method, a system and a curvature monitoring device for monitoring the curvature of coke oven columns, which relates to the technical field of coke oven maintenance; the method for monitoring the curvature of coke oven columns includes: setting a plurality of monitoring points according to the upper middle line part and the lower line part of the column; obtaining the initial distance between each monitoring point and the corresponding calibration wire in the horizontal direction according to the plurality of monitoring points on the upper middle line part and the calibration wire corresponding to the monitoring points; obtaining the three-dimensional deformation value of each monitoring point according to the initial distance between the monitoring points on the upper middle line part and the calibration wire in the horizontal direction and the initial positions of the monitoring points on the lower line part; and obtaining the curvature of the column according to the three-dimensional deformation value of each monitoring point and the distance between each monitoring point in the vertical direction. The present invention can detect the curvature of the column in real time by detecting the changes of the monitoring points, simplifies the manual operation, improves the measurement accuracy of the column curvature, and also improves the measurement efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of coke oven maintenance, and more particularly, to a method and system for monitoring the curvature of coke oven columns and a curvature monitoring device. Background Art

[0002] Currently, in the entire oven protection ironware system, the oven column is the most critical component and is extremely important for protecting the furnace body. However, production conditions at the coke oven site, such as temperature, etc., can cause the performance of the oven column to continuously change. Since the oven column is a rigid member, therefore, on the basis of regularly monitoring and maintaining the deformation of the oven column, in most cases, the deformation of the oven column is reversible. However, if it is not maintained and adjusted in time, the oven column will not be able to return to its normal state, that is, permanent deformation will occur.

[0003] In the prior art, a laser rangefinder is usually fixedly installed on the coke pusher car, and the movement of the coke pusher car is manually controlled to measure the curvature of the oven column. However, since the amount of deformation of the oven column is very small in the short term, problems such as vibration, deviation, and deflection during the startup process of the coke pusher car will have a greater impact on the measurement accuracy. At the same time, due to the existence of manual control, the measurement accuracy of the oven column curvature is greatly reduced. Summary of the Invention

[0004] The problem solved by the present invention is how to improve the measurement accuracy of the curvature of coke oven columns.

[0005] To solve the above problems, the present invention provides a method and system for monitoring the curvature of coke oven columns and a curvature monitoring device.

[0006] In a first aspect, the present invention provides a method for monitoring the curvature of coke oven columns, including:

[0007] Setting a plurality of monitoring points according to the upper middle line part and the lower line part of the oven column;

[0008] Obtaining the initial distance between each monitoring point and the corresponding calibration wire in the horizontal direction according to the plurality of monitoring points on the upper middle line part and the calibration wires corresponding to the monitoring points; wherein, the calibration wires corresponding to the monitoring points on the upper middle line part are arranged parallel to the horizontal plane, and each calibration wire is in the same vertical plane. The monitoring points are arranged at the intersection position of the horizontal plane where the calibration wire is located and the oven column, and the horizontal plane is perpendicular to the oven column;

[0009] Obtaining the three-dimensional deformation value of each monitoring point according to the initial distance between the monitoring points on the upper middle line part and the calibration wire in the horizontal direction and the initial positions of the monitoring points on the lower line part;

[0010] Obtaining the curvature of the oven column according to the three-dimensional deformation value of each monitoring point and the distance between each monitoring point in the vertical direction.

[0011] Optionally, the monitoring points include an upper monitoring point, a middle monitoring point, and a lower monitoring point; setting a plurality of monitoring points according to the upper middle part and the lower part of the furnace column includes:

[0012] Obtaining the positions of the upper monitoring point and the middle monitoring point according to the preset positions of the upper middle part of the furnace column.

[0013] Obtaining the position of the lower monitoring point according to the preset position of the lower part of the furnace column.

[0014] Wherein, the upper monitoring point, the middle monitoring point, and the lower monitoring point are sequentially arranged on the furnace column.

[0015] Optionally, obtaining the initial distance between each monitoring point and the corresponding calibration wire in the horizontal direction according to the plurality of monitoring points on the upper middle part and the calibration wire corresponding to the monitoring point includes:

[0016] By the traditional three-wire method, obtaining the vertical distances between the upper monitoring point and the middle monitoring point of the furnace column and the corresponding calibration wires in the horizontal direction respectively.

[0017] Taking the vertical distances between the upper monitoring point and the middle monitoring point and the corresponding calibration wires respectively as the initial distances between each monitoring point and the calibration wire in the horizontal direction.

[0018] Optionally, the three-dimensional deformation value includes a horizontal deformation value.

[0019] Obtaining the three-dimensional deformation value of each monitoring point according to the initial distance between the monitoring point on the upper middle part and the calibration wire in the horizontal direction and the initial position of the monitoring point on the lower part includes:

[0020] When the furnace column is working, obtaining the three-dimensional coordinates of the upper monitoring point and the middle monitoring point of the furnace column in a preset coordinate system and the three-dimensional coordinates of the lower monitoring point in the preset coordinate system.

[0021] According to the three-dimensional coordinates of the upper monitoring point and the middle monitoring point, obtaining the current distances between the upper monitoring point and the middle monitoring point and the calibration wire in the horizontal direction.

[0022] According to the current distances and the initial distances between the upper monitoring point and the middle monitoring point and the calibration wire, respectively obtaining the horizontal deformation values of the upper monitoring point and the middle monitoring point.

[0023] According to the initial position and the three-dimensional coordinates of the lower monitoring point in the preset coordinate system, obtaining the horizontal deformation value of the lower monitoring point.

[0024] Optionally, obtaining the three-dimensional coordinates of the upper monitoring point and the middle monitoring point of the furnace column in a preset coordinate system and the three-dimensional coordinates of the lower monitoring point in the preset coordinate system includes:

[0025] Obtaining the three-dimensional coordinates of the upper monitoring point and the middle monitoring point of the furnace column in a preset coordinate system by means of a total station set on the furnace column;

[0026] Obtaining the three-dimensional coordinates of the lower monitoring point in the preset coordinate system by means of a distance measuring sensor of a coke pusher set on the furnace column.

[0027] Optionally, obtaining the curvature of the furnace column according to the three-dimensional deformation values of each monitoring point and the spacing between each pair of monitoring points in the vertical direction includes:

[0028] Obtaining the monitoring ratio of the furnace column according to the spacing between the upper monitoring point and the middle monitoring point in the vertical direction and the spacing between the upper monitoring point and the lower monitoring point in the vertical direction;

[0029] Obtaining the curvature of the furnace column according to the monitoring ratio and the horizontal deformation values of the upper monitoring point, the middle monitoring point and the lower monitoring point.

[0030] Optionally, obtaining the curvature of the furnace column according to the monitoring ratio and the horizontal deformation values of the upper monitoring point, the middle monitoring point and the lower monitoring point includes:

[0031] Respectively taking the sum of the horizontal deformation value of the upper monitoring point and the middle monitoring point and the initial spacing as the current spacing between the upper monitoring point and the middle monitoring point in the horizontal direction and the corresponding calibration wire;

[0032] Taking the sum of the horizontal deformation value of the lower monitoring point and the vertical distance between the initial position and the calibration wire in the horizontal direction as the current spacing of the lower monitoring point;

[0033] Obtaining the curvature of the furnace column according to the monitoring ratio and the current spacings of the upper monitoring point, the middle monitoring point and the lower monitoring point.

[0034] Optionally, obtaining the curvature of the furnace column according to the monitoring ratio and the current spacings of the upper monitoring point and the middle monitoring point and the current position of the lower monitoring point includes:

[0035] Obtaining the curvature of the furnace column according to the monitoring ratio and the current spacings of the upper monitoring point and the middle monitoring point and the current position of the lower monitoring point by means of a curvature calculation formula;

[0036] The curvature calculation formula is as follows:

[0037]

[0038] Wherein, a' is the current spacing of the upper monitoring point, b' is the current spacing of the middle monitoring point, c' is the current spacing of the lower monitoring point, is the monitoring ratio, e is the vertical spacing between the upper monitoring point and the middle monitoring point, and E is the vertical spacing between the upper monitoring point and the lower monitoring point.

[0039] In a second aspect, the present invention provides a coke oven column curvature monitoring system, including a computer-readable storage medium storing a computer program and a processor. When the computer program is read and run by the processor, the coke oven column curvature monitoring method as described above is implemented.

[0040] In a third aspect, the present invention provides a curvature monitoring device, including the coke oven column curvature monitoring system as described above.

[0041] For the coke oven column curvature monitoring method, system and curvature monitoring device of the present invention, by setting a calibration wire on the column, the calibration wire is always perpendicular to the column, making the calibration wire a calibration reference. Using multiple monitoring points of the column, when the column is not stressed, the initial spacing of the monitoring points in the upper middle part relative to the corresponding calibration wire and the initial position of the lower line part are obtained, which is convenient for subsequent monitoring of the curvature change of the column. When the column is stressed and deformed, through the initial spacing, the change of the monitoring points of the column itself can be obtained, including the three-dimensional deformation value. According to the three-dimensional deformation value and the vertical spacing between each monitoring point, the curvature change of the column caused by the change of each monitoring point can be calculated. The present invention realizes real-time detection of the curvature of the column by detecting the change of the monitoring points, simplifies the manual operation, improves the measurement accuracy of the column curvature, and also improves the measurement efficiency. Description of the Drawings

[0042] Figure 1 is one of the flowcharts of the coke oven column curvature monitoring method according to an embodiment of the present invention;

[0043] Figure 2 is a schematic diagram of the principle of the three-line method according to an embodiment of the present invention;

[0044] Figure 3 is a schematic diagram of the coke oven column curvature monitoring according to an embodiment of the present invention;

[0045] Figure 4 is the second flowchart of the coke oven column curvature monitoring method according to an embodiment of the present invention;

[0046] Figure 5 It is the third flowchart of the coke oven column curvature monitoring method according to the embodiment of the present invention;

[0047] Figure 6 It is the fourth flowchart of the coke oven column curvature monitoring method according to the embodiment of the present invention;

[0048] Figure 7 It is the relationship diagram of the coke oven column curvature monitoring points and the calibration wire and the column position according to the embodiment of the present invention. Detailed implementation manners

[0049] To make the above objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific embodiments of the present invention will be given with reference to the accompanying drawings.

[0050] In the first aspect, in combination with Figure 1 As shown, a coke oven column curvature monitoring method according to an embodiment of the present invention is applied to a column curvature measurement system. The column curvature measurement system includes an upper middle line column curvature measurement system and a lower line column curvature measurement system, which respectively measure the curvatures of the upper middle line part and the lower line part of the column. The coke oven column curvature monitoring method includes:

[0051] Set a plurality of monitoring points according to the upper middle line part and the lower line part of the column.

[0052] Specifically, in combination with Figure 7 As shown, corresponding monitoring points are set in the upper middle line part of the column to detect the curvature change of the upper middle line part of the column, and corresponding monitoring points are set in the lower line part of the column to detect the curvature change of the lower line part of the column.

[0053] Obtain the initial distance between each of the monitoring points and the corresponding calibration wire in the horizontal direction according to the plurality of monitoring points in the upper middle line part and the calibration wire corresponding to the monitoring points;

[0054] Among them, the calibration wire corresponding to the monitoring points in the upper middle line part is arranged parallel to the horizontal plane, each of the calibration wires is in the same vertical plane, the monitoring points are arranged at the intersection position of the horizontal plane where the calibration wire is located and the column, and the horizontal plane is perpendicular to the column.

[0055] Specifically, in combination with Figure 7 As shown, a calibration wire is set for each monitoring point in the upper middle line part. The calibration wire corresponding to the monitoring point is arranged parallel to the horizontal plane, and each calibration wire is in the same vertical plane, indicating that the calibration wires are arranged in the same plane in the direction perpendicular to the horizontal plane. The monitoring points are arranged at the intersection position of the horizontal plane where the calibration wire is located and the column, and the horizontal plane is perpendicular to the column, which is convenient for measuring the horizontal distance between the monitoring points in the upper middle line part of the column and the calibration wire. In combination with Figure 2As shown, in a preferred embodiment of the present invention, monitoring points are respectively arranged on the upper cross iron and the middle cross iron of the furnace column to monitor the above-mentioned areas respectively, so as to determine the curvature of the furnace column. After setting the calibration wire, multiple measurements are carried out by the traditional three-wire method to obtain the accurate initial distance between each monitoring point and the calibration wire in the horizontal direction.

[0056] According to the initial distance between the monitoring point in the upper middle line part and the calibration wire in the horizontal direction and the initial positions of the monitoring points in the lower line part, the three-dimensional deformation values of each monitoring point are obtained.

[0057] Specifically, in combination with Figure 3 As shown, a communication connection is established between the monitoring station (which can be a monitoring robot) and the computer (which can be an expert diagnosis management system). The monitoring station monitors the monitoring points 1... monitoring point m of the furnace column and the reference benchmark stations 1... reference benchmark stations n (as the reference system of the furnace column) respectively. When the furnace column is stressed, the curvature of the furnace column itself will change. Therefore, the change in the curvature of the furnace column itself can be obtained by monitoring the monitoring points. The monitoring station of the furnace column curvature upper middle line measurement system is used to monitor the monitoring points on the upper line and the middle line of the furnace column. Among them, the monitoring station can set up an intelligent measuring robot to automatically search, automatically identify and aim at all monitoring points and automatically measure and obtain the three-dimensional space coordinates of the monitoring points on the upper line and the middle line of the furnace column. It is worth noting that the observation pier of the monitoring station is composed of a concrete casting base and a precast steel pipe column and is installed with a forced centering plate, which is used for the position adjustment of the measuring robot during installation and to ensure horizontal measurement during the measurement process. The monitoring system of the monitoring station is configured with a lighting device and a video camera to monitor the surrounding environment of the monitoring points during each measurement operation when the measuring robot is performing measurement operations. For the monitoring points on the lower line of the furnace column, they can be monitored by the furnace column lower line curvature measurement system. The furnace column lower line curvature measurement system includes multiple laser rangefinders. The laser rangefinders are installed opposite to the lower line of the furnace column, and each rangefinder corresponds to one furnace column. The rangefinder measures the initial positions of the monitoring points on the lower line of the furnace column in real time.

[0058] In a preferred embodiment of the present invention, taking a 2×55-hole 6m coke oven as an example, the upper centerline measurement system for the curvature of the oven columns includes a monitoring station, a reference benchmark station, and monitoring points. The monitoring station consists of a measuring robot, an observation pier, an automatic lifting rain cover, and a monitoring system. Among them, the measuring robot uses the most advanced intelligent total station, with a measurement accuracy reaching the millimeter level, which can automatically search, automatically identify and aim at all monitoring points, and automatically measure and obtain the three-dimensional space coordinates of the monitoring points. The monitoring station is set outside the coal tower, and one monitoring station is set on each side of the coke side and the machine side. The horizontal distance between the monitoring station and the monitoring points is not less than 11m. The observation pier is composed of a concrete-cast base and a prefabricated steel pipe column and is installed with a forced centering plate, which is used for the position adjustment of the intelligent total station during installation and to ensure horizontal measurement during the measurement process. An intelligent total station lifting protection cover is used to protect the total station in the field, and a monitoring system is equipped. When the intelligent total station is performing measurement operations, the surrounding environment of the monitoring points during each measurement operation, as well as the working status of the intelligent total station and the automatic lifting rain cover, are monitored.

[0059] For the reference benchmark station and monitoring points of the upper centerline measurement system for the curvature of the oven columns, professional monitoring prisms are installed at specific measurement positions to monitor and locate their space coordinates. The reference benchmark station is composed of installing benchmark point professional prisms on the front of the coal tower and the coke side and the machine side respectively. Three monitoring benchmark points are set on each side of the coke side and the machine side. The professional monitoring prisms of the benchmark points are fixed using steel brackets, and prism connection screws are installed on the brackets for forced centering to ensure good visibility for observation. The installation of the monitoring points is to install upper-line and center-line professional deformation monitoring prisms at the corresponding positions of the upper cross iron and the lower cross iron of the oven column. The space position of the oven column is monitored through the intelligent total station to determine the deformation of the oven column. Two monitoring points are arranged on each oven column, that is, there is one monitoring point at the corresponding position of the upper and lower cross irons of each oven column. Taking the 2×55-hole coke oven as an example, a total of 448 monitoring points are arranged. If there is a problem with the resolution of the prisms in a small field of view, when installing the prisms at a relatively long distance, they can be staggered from each other by a certain distance. L-shaped prisms are used, with an effective diameter of the prism of 25.4mm, a prism constant of -25.30mm, and a prism accuracy of 5″. The prisms are firmly installed on the oven column, and the prism surface faces the measuring station. In order to prevent dust pollution of the prisms, improve the measurement accuracy, and extend the service life, the present invention is equipped with a professional prism protection cover and an automatic cleaning system.

[0060] The furnace column lower line curvature measurement system uses multiple explosion-proof rangefinders to form a rangefinder group to measure the monitoring points of the furnace column lower line. Taking a 2×55-hole coke oven as an example, a total of 224 explosion-proof rangefinders are arranged. The measurement accuracy of the explosion-proof rangefinder is <±1mm, the working temperature is -10°C - 70°C, and it is applicable to hazardous locations in Zone 1 or Zone 2, Group IIC, T6 and below in an explosive gas environment. Using the steel column on the regenerator operation walkway as the support point, adjacent steel columns are connected with channel steel. The explosion-proof laser rangefinder is installed on the channel steel opposite the regenerator furnace column, and the bracket is fixedly installed. One rangefinder is installed corresponding to each furnace column, and the red laser point is aligned with the lower line monitoring point. Spraying white paint on the monitoring point is more conducive to measurement. The rangefinder measures the distance between the column and the rangefinder in real time. The rangefinder data is output through Modbus485 RTU (Remote Terminal Unit). Two of the four-core cables supply power to the rangefinder, and two cores transmit data. The four-core cable is laid through pipes along the regenerator corridor. An explosion-proof junction box is fixed at each rangefinder installation point for cable docking to supply power and transmit signals. The instrument control box and the computer are installed in the furnace room operation room.

[0061] According to the three-dimensional deformation value of each of the monitoring points and the vertical distance between each of the monitoring points, the curvature of the furnace column is obtained.

[0062] Specifically, according to the three-dimensional deformation values of each monitored point detected, combined with the vertical distance of each monitored point itself, through geometric analysis, the curvature of the furnace column is obtained, realizing the monitoring of the curvature of the furnace column.

[0063] In the coke oven furnace column curvature monitoring method of the present invention, by setting a calibration wire on the furnace column, the calibration wire is always perpendicular to the furnace column, making the calibration wire a calibration reference. Using multiple monitoring points of the furnace column, when the furnace column is not stressed, the initial distance between the monitoring points in the upper middle part relative to the corresponding calibration wire and the initial position of the lower part are obtained, which is convenient for subsequent monitoring of the curvature change of the furnace column. When the furnace column is stressed and deformed, through the initial distance, the change of the monitoring points of the furnace column itself can be obtained, including the three-dimensional deformation value. According to the three-dimensional deformation value and the vertical distance between each monitoring point, the curvature change of the furnace column caused by the change of each monitoring point can be calculated through calculation. The present invention realizes the real-time detection of the curvature of the furnace column by detecting the change of the monitoring points, simplifies the manual operation, improves the measurement accuracy of the curvature of the furnace column, and also improves the measurement efficiency.

[0064] Optionally, the monitoring points include upper monitoring points, middle monitoring points and lower monitoring points; setting a plurality of monitoring points according to the upper middle part and the lower part of the furnace column includes:

[0065] According to the preset positions of the upper middle part of the furnace column, the positions of the upper monitoring points and the middle monitoring points are obtained;

[0066] Obtain the position of the lower monitoring point according to the preset position of the lower line part of the furnace column;

[0067] Wherein, the upper monitoring point, the middle monitoring point and the lower monitoring point are sequentially arranged on the furnace column.

[0068] Specifically, in a preferred embodiment of the present invention, the preset position of the upper middle line part can be the positions of the upper cross iron and the middle cross iron. The upper monitoring point and the middle monitoring point are respectively arranged at the positions of the upper cross iron and the middle cross iron. At the same time, the preset position of the lower line part of the furnace column can be the bottom end of the furnace column, and the lower monitoring point is arranged at the bottom end of the furnace column, so as to realize the monitoring of the curvature change of the whole furnace column.

[0069] In this embodiment, three monitoring points are respectively set on the upper line, the middle line and the lower line of the furnace column at the initial time, which is convenient for timely obtaining the curvature change of the furnace column when the furnace column is stressed and deformed.

[0070] Optionally, in combination with Figure 4 As shown, obtaining the initial distance between each monitoring point and the corresponding calibration wire in the horizontal direction according to the multiple monitoring points of the upper middle line part and the calibration wire corresponding to the monitoring point includes:

[0071] By the traditional three-wire method, obtain the vertical distances between the upper monitoring point and the middle monitoring point of the furnace column and the corresponding calibration wires in the horizontal direction respectively;

[0072] Take the vertical distances between the upper monitoring point and the middle monitoring point and the corresponding calibration wires respectively as the initial distances between each monitoring point and the calibration wire in the horizontal direction.

[0073] Specifically, three monitoring points are set on the furnace column, namely the upper monitoring point, the middle monitoring point and the lower monitoring point, which are respectively located on the upper line, the middle line and the lower line of the furnace column. The vertical distances between the upper monitoring point and the middle monitoring point of the furnace column and the calibration wires in the horizontal direction are manually obtained by the traditional three-wire method. In combination with Figure 2 and Figure 7 As shown, a and b are three distances as the vertical distances. At the same time, take the above vertical distances as the initial distances. When the furnace column is stressed and generates curvature, the values of a and b will change. At this time, compare the changed distances with the initial distances, and the curvature of the furnace column stressed and bent can be obtained through geometric operations.

[0074] In this embodiment, three monitoring points are respectively set on the upper line, the middle line and the lower line of the furnace column at the initial time, and the initial distances between the monitoring points and the calibration wires are obtained, which is convenient for timely obtaining the changes of the monitoring points in the horizontal direction when the furnace column is stressed and deformed.

[0075] Optionally, combine Figure 5 As shown, the three-dimensional deformation value includes a horizontal deformation value;

[0076] The three-dimensional deformation value of each monitoring point obtained according to the initial spacing between the monitoring point on the upper middle line part and the calibration wire in the horizontal direction and the initial position of the monitoring point on the lower line part includes:

[0077] When the furnace column is working, obtain the three-dimensional coordinates of the upper monitoring point and the middle monitoring point of the furnace column in a preset coordinate system and the three-dimensional coordinates of the lower monitoring point in the preset coordinate system;

[0078] According to the three-dimensional coordinates of the upper monitoring point and the middle monitoring point, obtain the current spacing between the upper monitoring point and the middle monitoring point and the corresponding calibration wire in the horizontal direction;

[0079] According to the current spacing and the initial spacing of the upper monitoring point and the middle monitoring point, respectively obtain the horizontal deformation values of the upper monitoring point and the middle monitoring point;

[0080] According to the initial position and the three-dimensional coordinates of the lower monitoring point in the preset coordinate system, obtain the horizontal deformation value of the lower monitoring point.

[0081] Specifically, the three-dimensional deformation value includes the displacement of the monitoring point in the horizontal direction. Therefore, for the acquisition of the three-dimensional deformation value, it is necessary to obtain the current spacing between the upper monitoring point, the middle monitoring point, and the lower monitoring point of the furnace column and the calibration wire in the horizontal direction according to the three-dimensional coordinates of the upper monitoring point, the middle monitoring point, and the lower monitoring point of the furnace column in a preset coordinate system; in a preferred embodiment of the present invention, the upper monitoring point and the middle monitoring point can be positioned by the reference base station of the furnace column curvature upper middle line measurement system, and their spatial three-dimensional coordinates can be obtained. The three-dimensional coordinates of the lower detection point are obtained by the laser rangefinder of the furnace column lower line curvature measurement system. At the same time, according to the three-dimensional coordinates of the upper, middle, and lower monitoring points, the horizontal deformation values of the upper, middle, and lower monitoring points can be obtained.

[0082] In this embodiment, by obtaining the actual three-dimensional coordinates of the upper, middle, and lower monitoring points of the furnace column and the current distance relative to the calibration wire, the deformation values of the upper, middle, and lower monitoring points in the horizontal direction are accurately calculated. The change of the furnace column curvature at different positions can be accurately and real-time understood.

[0083] Optionally, the obtaining of the three-dimensional coordinates of the upper monitoring point and the middle monitoring point of the furnace column in a preset coordinate system and the three-dimensional coordinates of the lower monitoring point in the preset coordinate system includes:

[0084] By setting a total station on the oven column, the three-dimensional coordinates of the upper monitoring point and the middle monitoring point of the oven column in a preset coordinate system are obtained;

[0085] By setting a ranging sensor on the coke pusher of the oven column, the three-dimensional coordinates of the lower monitoring point in the preset coordinate system are obtained.

[0086] Specifically, the three-dimensional coordinates of the upper and middle monitoring points of the oven column in the preset coordinate system are monitored by a total station, and the three-dimensional coordinates of the lower monitoring point in the preset coordinate system are monitored by a ranging sensor. Among them, the monitoring prisms of the total station are respectively set on the same horizontal plane as the upper and middle monitoring points, that is, at the same height as the monitoring points, so as to obtain the change of the horizontal position of the monitoring points in turn; the ranging sensor can be an explosion-proof rangefinder, and the measurement accuracy of the explosion-proof rangefinder is <±1mm, the working temperature is -10°C to 70°C, and it is applicable to dangerous places in Zone 1 or Zone 2, Group II C, T6 and below in an explosive gas environment. Therefore, the lower part of the oven column can be monitored.

[0087] In this embodiment, the curvature of the upper, middle and lower parts of the oven column is monitored by a total station and a ranging sensor, and the deformation values of the upper, middle and lower monitoring points in the horizontal direction are accurately calculated to understand the change of the oven column curvature at different positions in real time.

[0088] Optionally, in combination with Figure 6 As shown, obtaining the curvature of the oven column according to the three-dimensional deformation value of each monitoring point and the distance between each monitoring point in the vertical direction includes:

[0089] According to the distance between the upper monitoring point and the middle monitoring point in the vertical direction and the distance between the upper monitoring point and the lower monitoring point in the vertical direction, the monitoring ratio of the oven column is obtained;

[0090] According to the monitoring ratio and the horizontal deformation values of the upper monitoring point, the middle monitoring point and the lower monitoring point, the curvature of the oven column is obtained.

[0091] Specifically, in combination with Figure 2 As shown, when measuring the initial distance, the distance between the upper monitoring point and the middle monitoring point in the vertical direction and the distance between the upper monitoring point and the lower monitoring point in the vertical direction are also measured, which respectively represent Figure 2 e and E in. According to the two vertical distances, the monitoring ratio of the oven column can be calculated, and according to the monitoring ratio and the horizontal deformation value of the monitoring point, through geometric operations, the current curvature of the corresponding oven column can be obtained.

[0092] In this embodiment, by measuring the vertical distances between the upper monitoring point and the middle monitoring point and between the upper monitoring point and the lower monitoring point, the monitoring ratio of the furnace column curvature is obtained. Combining with the horizontal deformation value, more comprehensive curvature information is obtained, which helps to comprehensively understand the deformation of the furnace column.

[0093] Optionally, obtaining the curvature of the furnace column according to the monitoring ratio and the horizontal deformation values of the upper monitoring point, the middle monitoring point, and the lower monitoring point includes:

[0094] Taking the sum of the horizontal deformation values of the upper monitoring point and the middle monitoring point and the initial distance as the current distances of the upper monitoring point and the middle monitoring point from the corresponding calibration wire in the horizontal direction respectively;

[0095] Taking the sum of the horizontal deformation value of the lower monitoring point and the perpendicular distance between the initial position and the calibration wire in the horizontal direction as the current distance of the lower monitoring point;

[0096] Obtaining the curvature of the furnace column according to the monitoring ratio and the current distances of the upper monitoring point, the middle monitoring point, and the lower monitoring point.

[0097] Specifically, the sum of the horizontal deformation values of the upper monitoring point, the middle monitoring point, and the lower monitoring point and the initial distance, that is, adding the horizontal deformation value of each monitoring point and the initial distance, to obtain the current distance of the monitoring point in the horizontal direction. Then, through the monitoring ratio, this current distance is converted into a distance value in the vertical direction.

[0098] In this embodiment, the curvature information of the furnace column is obtained through calculation and conversion relationships, providing an important reference for the deformation of the furnace column.

[0099] Optionally, obtaining the curvature of the furnace column according to the monitoring ratio and the current distances of the upper monitoring point and the middle monitoring point and the current position of the lower monitoring point includes:

[0100] Obtaining the curvature of the furnace column through a curvature calculation formula according to the monitoring ratio and the current distances of the upper monitoring point and the middle monitoring point and the current position of the lower monitoring point;

[0101] The curvature calculation formula is:

[0102]

[0103] where a' is the current distance of the upper monitoring point, b' is the current distance of the middle monitoring point, and c' is the current distance of the lower monitoring point, is the monitoring ratio, e is the vertical distance between the upper monitoring point and the middle monitoring point, and E is the vertical distance between the upper monitoring point and the lower monitoring point.

[0104] Specifically, through the curvature calculation formula, according to the monitoring ratio and the current distances of the upper monitoring point, the middle monitoring point, and the lower monitoring point, the curvature of the furnace column is obtained; for example, as shown in Table 1 and Table 2 (where Table 1 represents the measurement data of some furnace columns on the pusher side, and Table 2 represents the measurement data of some furnace columns on the coke side), where a, b, and c respectively represent the initial distances of the upper monitoring point, the middle monitoring point, and the lower monitoring point, and a′, b′, and c′ respectively represent the current distances of the upper monitoring point, the middle monitoring point, and the lower monitoring point. By combining the current distances and the initial distances of the upper monitoring point, the middle monitoring point, and the lower monitoring point, and using the curvature calculation formula, the current curvature of the furnace column can be accurately obtained.

[0105] Table 1

[0106]

[0107]

[0108] Table 2

[0109]

[0110] In this embodiment, the curvature of the furnace column is calculated through the curvature calculation formula, and more accurate curvature is obtained according to the actually monitored data, which helps to comprehensively understand the deformation of the furnace column.

[0111] Optionally, the method for monitoring the curvature of the coke oven furnace column further includes:

[0112] When the curvature of the furnace column is greater than or equal to a preset threshold, a warning is given according to a preset operation.

[0113] Specifically, by setting a preset threshold, it can be judged whether the curvature of the furnace column exceeds the maximum limit. In a preferred embodiment of the present invention, the preset threshold of the curvature of the furnace column can be set to 20. When the curvature exceeds the threshold, it means that the curvature is too large at this time, and the furnace column is prone to damage due to excessive deformation. At this time, a warning is given.

[0114] In this embodiment, by setting a preset threshold, the normal use of the furnace column is ensured, and at the same time, the phenomenon of permanent deformation caused by excessive curvature of the furnace column is avoided.

[0115] In a second aspect, the present invention provides a system for monitoring the curvature of a coke oven furnace column, including a computer-readable storage medium storing a computer program and a processor. When the computer program is read and run by the processor, the method for monitoring the curvature of the coke oven furnace column as described above is implemented.

[0116] In the coke oven column curvature monitoring system according to an embodiment of the present invention, by setting a calibration wire, the distance between each monitoring point on the column and the calibration wire in the horizontal direction is obtained as the initial distance, which facilitates subsequent monitoring of the change in the column curvature. When the column is deformed under force, through the initial distance, the change of the monitoring points on the column itself can be obtained, including the three-dimensional deformation value. According to the three-dimensional deformation value and the distance between each monitoring point in the vertical direction, the curvature change of the column caused by the change of each monitoring point can be calculated. The present invention can perform real-time detection of the column curvature by detecting the change of the monitoring points, simplifies the manual operation, improves the measurement accuracy of the column curvature, and also improves the measurement efficiency.

[0117] In a third aspect, the present invention provides a curvature monitoring device, including the above-mentioned coke oven column curvature monitoring system.

[0118] In the curvature monitoring device according to an embodiment of the present invention, by setting a calibration wire, the distance between each monitoring point on the column and the calibration wire in the horizontal direction is obtained as the initial distance, which facilitates subsequent monitoring of the change in the column curvature. When the column is deformed under force, through the initial distance, the change of the monitoring points on the column itself can be obtained, including the three-dimensional deformation value. According to the three-dimensional deformation value and the distance between each monitoring point in the vertical direction, the curvature change of the column caused by the change of each monitoring point can be calculated. The present invention can perform real-time detection of the column curvature by detecting the change of the monitoring points, simplifies the manual operation, improves the measurement accuracy of the column curvature, and also improves the measurement efficiency.

[0119] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will all fall within the protection scope of the present invention.

Claims

1. A method for monitoring the curvature of coke oven columns, characterized in that, Including: According to the upper middle line part and the lower line part of the furnace column, a plurality of monitoring points are set, where the monitoring points include upper monitoring points, middle monitoring points and lower monitoring points; According to the plurality of monitoring points on the upper middle line part and the calibration wires corresponding to the monitoring points, the initial distance between each monitoring point and the corresponding calibration wire in the horizontal direction is obtained; Among them, the calibration wires corresponding to the monitoring points on the upper middle line part are arranged parallel to the horizontal plane, and each calibration wire is in the same vertical plane. The monitoring points are set at the intersection position of the horizontal plane where the calibration wire is located and the furnace column, and the horizontal plane is perpendicular to the furnace column; According to the initial distance between the monitoring points on the upper middle line part and the calibration wire in the horizontal direction and the initial positions of the monitoring points on the lower line part, the three-dimensional deformation values of each monitoring point are obtained, where the three-dimensional deformation values include horizontal deformation values; The obtaining of the three-dimensional deformation values of each monitoring point according to the initial distance between the monitoring points on the upper middle line part and the calibration wire in the horizontal direction and the initial positions of the monitoring points on the lower line part includes: When the furnace column is working, obtain the three-dimensional coordinates of the upper monitoring point and the middle monitoring point of the furnace column in a preset coordinate system and the three-dimensional coordinates of the lower monitoring point in the preset coordinate system; According to the three-dimensional coordinates of the upper monitoring point and the middle monitoring point, obtain the current distances between the upper monitoring point and the middle monitoring point and the corresponding calibration wires in the horizontal direction; According to the current distances and the initial distances between the upper monitoring point and the middle monitoring point and the corresponding calibration wires, respectively obtain the horizontal deformation values of the upper monitoring point and the middle monitoring point; According to the initial position and the three-dimensional coordinates of the lower monitoring point in the preset coordinate system, obtain the horizontal deformation value of the lower monitoring point; According to the three-dimensional deformation values of each monitoring point and the distances between each monitoring point in the vertical direction, obtain the curvature of the furnace column.

2. The method for monitoring the curvature of the coke oven column according to claim 1, characterized in that The setting of a plurality of monitoring points according to the upper middle line part and the lower line part of the furnace column includes: According to the preset positions of the upper middle line part of the furnace column, obtain the positions of the upper monitoring point and the middle monitoring point; According to the preset positions of the lower line part of the furnace column, obtain the position of the lower monitoring point; Among them, the upper monitoring point, the middle monitoring point and the lower monitoring point are sequentially arranged on the furnace column.

3. The coke oven furnace column curvature monitoring method according to claim 2, characterized in that, The obtaining of the initial distance between each monitoring point and the corresponding calibration wire in the horizontal direction according to the plurality of monitoring points on the upper middle line part and the calibration wires corresponding to the monitoring points includes: By the traditional three-line method, obtain the vertical distances between the upper monitoring point and the middle monitoring point of the furnace column and the corresponding calibration wires in the horizontal direction respectively; Take the vertical distances between the upper monitoring point and the middle monitoring point and the corresponding calibration wires as the initial distances between each monitoring point and the calibration wire in the horizontal direction.

4. The coke oven furnace column curvature monitoring method according to claim 3, characterized in that, Obtaining the three-dimensional coordinates of the upper monitoring point and the middle monitoring point of the oven column in a preset coordinate system and the three-dimensional coordinates of the lower monitoring point in the preset coordinate system includes: Obtaining the three-dimensional coordinates of the upper monitoring point and the middle monitoring point of the oven column in the preset coordinate system through a total station set on the oven column; Obtaining the three-dimensional coordinates of the lower monitoring point in the preset coordinate system through a ranging sensor of a coke pusher set on the oven column.

5. The coke oven column curvature monitoring method according to claim 4, characterized in that, Obtaining the curvature of the oven column according to the three-dimensional deformation values of each monitoring point and the spacing between each pair of monitoring points in the vertical direction includes: Obtaining the monitoring ratio of the oven column according to the spacing in the vertical direction between the upper monitoring point and the middle monitoring point and the spacing in the vertical direction between the upper monitoring point and the lower monitoring point; Obtaining the curvature of the oven column according to the monitoring ratio and the horizontal deformation values of the upper monitoring point, the middle monitoring point, and the lower monitoring point.

6. The coke oven column curvature monitoring method according to claim 5, characterized in that, Obtaining the curvature of the oven column according to the monitoring ratio and the horizontal deformation values of the upper monitoring point, the middle monitoring point, and the lower monitoring point includes: Respectively taking the sum of the horizontal deformation value of the upper monitoring point and the middle monitoring point and the initial spacing as the current spacing between the upper monitoring point and the middle monitoring point in the horizontal direction and the corresponding calibration wire; Taking the sum of the horizontal deformation value of the lower monitoring point and the vertical distance between the initial position and the calibration wire in the horizontal direction as the current spacing of the lower monitoring point; Obtaining the curvature of the oven column according to the monitoring ratio and the current spacings of the upper monitoring point, the middle monitoring point, and the lower monitoring point.

7. The coke oven furnace column curvature monitoring method according to claim 6, characterized in that, Obtaining the curvature of the oven column according to the monitoring ratio and the current spacings of the upper monitoring point and the middle monitoring point and the current position of the lower monitoring point includes: Obtaining the curvature of the oven column through a curvature calculation formula according to the monitoring ratio and the current spacings of the upper monitoring point and the middle monitoring point and the current position of the lower monitoring point; The curvature calculation formula is: ； wherein, is the current spacing of the upper monitoring point, is the current spacing of the middle monitoring point, is the current spacing of the lower monitoring point, is the monitoring ratio, e is the vertical spacing between the upper monitoring point and the middle monitoring point, and E is the vertical spacing between the upper monitoring point and the lower monitoring point.

8. A coke oven furnace column curvature monitoring system, characterized in that, Including a computer-readable storage medium storing a computer program and a processor, when the computer program is read and run by the processor, the method for monitoring the curvature of a coke oven column according to any one of claims 1 to 7 is implemented.

9. A curvature monitoring device, characterized in that, Including the coke oven column curvature monitoring system according to claim 8.

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