Converter valve heating fault detection and positioning system

Abstract

The invention relates to a converter valve heating fault detection and positioning system. The system comprises an infrared detector array converter valve tower, a data acquisition device and a local data processing module. Two rows of infrared detector units with uniform gaps and the same number are arranged on the outer side of the converter valve tower to form an infrared detection array. The specific arrangement of the infrared detection array comprises the following steps: converter valve towers are arranged in parallel, two columns of infrared detector units are arranged on the outer side of the converter valve towers, namely, the infrared detector units are arranged at four corners of each converter valve tower, the number of the converter valve towers is one less than that of the infrared detector units in each column, and infrared detector unit detection groups are vertically arranged on a rigid bracket; in the vertical direction, the height of each layer of infrared detector unit detection group is in one-to-one correspondence with the height of the converter valve tower. Compared with the prior art, the method has the advantages of high real-time performance, accurate positioning, high robustness and the like.

Description

Technical Field

[0001] The present invention relates to the field of converter station equipment, and particularly to a detection and location system for the heating fault of a converter valve. Background Art

[0002] Infrared diagnosis technology can predict potential faults and defects inside the converter valve equipment and the working state of components inside the valve body, enabling early identification of problems and preventive maintenance. Thus, it upgrades the traditional regular test and maintenance mode to a predictive maintenance based on fault prediction, which can not only improve the reliability and effectiveness of the converter valve equipment, but also significantly enhance the operating economic benefits, reduce the maintenance cost, and has important practical significance.

[0003] Currently, the commonly used converter valve temperature monitoring methods mainly rely on installing infrared thermometers that can move along fixed guide rails in the converter valve hall, or detecting by using hand-held infrared thermometers during the patrol of staff. However, the space in the valve hall is limited, and the layout of the fixed guide rails cannot be too dense. At the same time, under normal operating conditions, the staff can only patrol on the gallery bridge, which limits the viewing range of the two monitoring methods, resulting in the measurement depth and range not meeting the requirements. When detecting the temperature of the converter valve by the rail-mounted or hand-held infrared thermometer, although some temperature data can be obtained, this method can only reflect the local temperature change and cannot accurately locate the specific component or device with abnormal high temperature inside the converter valve. Therefore, the measurement results cannot be applied to temperature protection and fault warning in real time. Therefore, how to realize the real-time detection and location of the heating fault occurrence point in the converter valve equipment and improve the accuracy is a technical problem to be solved. Summary of the Invention

[0004] The purpose of the present invention is to overcome the above-mentioned defects existing in the prior art and provide a detection and location system for the heating fault of a converter valve. Through an infrared detector array, each converter valve tower is detected by four infrared detectors, and the heating fault is detected and the fault location is carried out by comparing the detected infrared energy.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] According to one aspect of the present invention, a detection and location system for the heating fault of a converter valve is provided. The system includes: an infrared detector array, a converter valve tower, a data acquisition device, and a local data processing module;

[0007] Two columns of infrared detector units with uniform gaps and equal numbers are arranged outside the converter valve tower to form an infrared detection array; the data acquisition device is installed at the center point of each infrared detector unit, and the installation height is the same as the height of the center point of the converter valve tower; the local data processing module is connected to the data acquisition device to calculate and obtain the determination of converter valve failure heating and the positioning of the heating point.

[0008] The specific arrangement of the infrared detection array is as follows: the converter valve towers are arranged side by side, and two columns of infrared detector units are arranged outside, that is, infrared detector units are provided at the four corners of each converter valve tower, and the number of converter valve towers is one less than that of each column of infrared detector units; the infrared detector unit consists of a rigid bracket and multiple layers of infrared detector unit detection groups, and the infrared detector unit detection groups are vertically arranged on the rigid bracket; in the vertical direction, the distance between adjacent two layers of infrared detector unit detection groups is equal to the distance between adjacent two layers of the converter valve tower in the vertical direction, that is, the height of each layer of infrared detector unit detection group corresponds one by one to the height of the converter valve tower.

[0009] Further, on the infrared detector units at the four endpoints of the infrared detection array, the installed infrared detector unit detection group is a single infrared detector facing the converter valve tower, and the rest are double infrared detectors.

[0010] Further, the infrared detector unit detection group includes an infrared detector and an infrared filter lens, and the infrared filter lens covers in front of the infrared detector.

[0011] Further, the temperature range obtained by the infrared detector is from 80°C to 105°C, and the corresponding infrared wavelength range is from 8.2μm to 7.66μm.

[0012] Further, the infrared detector unit detection group further includes an infrared detector partition, and the infrared detector partition is arranged on the side of the infrared detector to limit the orientation and detection range of the infrared detector.

[0013] According to the arrangement of the infrared detection array, there are four types of orientations of the infrared detectors, and the infrared detectors on the infrared detector units all face the corresponding converter valve tower.

[0014] Further, in the same layer and in the same monitoring environment, if there is no heating failure, the infrared energy detected by the infrared detectors with the same orientation in different infrared detector units is the same; otherwise, there is an infrared energy difference.

[0015] Further, the steps for the local server to perform heating failure detection include:

[0016] Receive the signals transmitted by the data acquisition device, add up the infrared energies detected by the infrared detectors on the same layer to obtain the first infrared energy. If the first infrared energy of a certain layer is greater than that of other layers and the first infrared energies of other layers are approximately equal, it indicates that there is a heating fault in the current layer of the corresponding converter valve tower, that is, the layer where the heating fault is located is located; in the layer where the heating fault is located, add up the infrared energies detected by the four infrared detectors corresponding to each converter valve tower as the second infrared energy, and judge the second infrared energy of the current layer. If the second infrared energy of a certain converter valve tower is greater than that of other converter valve towers and the second infrared energies of other converter valve towers are approximately equal, it indicates that there is a heating fault in this converter valve tower, that is, the corresponding converter valve tower in the layer where the heating fault is located is located; by calculating the second infrared energies of each layer of the converter valve tower with heating faults, verify the location of the heating fault and confirm whether there are faults in other layers of the current converter valve tower.

[0017] Further, the center height of the infrared detector unit and the converter valve tower from the ground is 4000mm, the distance between the central axis of the converter valve tower and each column of infrared detector units is 5000mm, and the distance between the centers of adjacent converter valve towers is 8000mm.

[0018] Further, the system further includes a remote data display module connected to the local data processing module through an optical fiber transmission module.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] (1) Realize the comprehensive and real-time accurate positioning of the heating points of converter valve faults: Through the converter valve heating fault detection and positioning system proposed by the present invention, it is possible to accurately locate the occurrence points of heating faults in converter valve equipment. Install multi-layer infrared detectors at the four corners of each converter valve to be monitored to form an infrared detector array, which can simultaneously cover and accurately detect the temperature distribution inside the converter valve. When a fault heating occurs somewhere, the system can detect and locate the specific heating point in real time, improving the accuracy and efficiency of fault detection; in addition, the use of infrared filter lenses further improves the detection accuracy of the system by filtering out part of the environmental noise and reducing the system error.

[0021] (2) The system has high robustness, low requirement for the accuracy of a single device, and low operation and maintenance costs: In the present invention, through the array arrangement of infrared detectors, the center point of each infrared detector unit is at the same height from the ground as that of the converter valve tower and at an appropriate distance, ensuring the best monitoring effect. At the same time, through the array arrangement, when a certain infrared detector fails, the measurement data of the remaining infrared detectors can still be used for fault judgment and positioning. Moreover, the function of fault judgment and positioning has a low requirement for the accuracy of a single infrared detector, and its accurate positioning is achieved through the array and comparison judgment. Therefore, the system can meet the high-robustness and high-accuracy requirements of fault judgment and positioning at low cost, that is, the operation and maintenance costs of the detection and positioning system are relatively low. In addition, compared with the existing manual inspection and fixed guide rails, the equipment and labor costs are reduced.

[0022] (3) Improve the reliability and real-time performance of the monitoring of converter valve equipment: The data acquisition device collects the infrared energy data detected by the infrared detector array group in real time and transmits it to the local server for processing to obtain the fault heating determination and the positioning result of the heating point. At the same time, the positioning result is transmitted to the remote server through the optical fiber transmission module to realize the remote storage and rapid access of data, further improving the real-time performance and convenience of equipment monitoring. Brief Description of the Drawings

[0023] Figure 1 It is a side view of the spatial position of the converter valve heating fault detection and positioning system;

[0024] Figure 2 It is a top view of the converter valve heating fault detection and positioning system;

[0025] Figure 3 It is a top view of the spatial position of the converter valve heating fault detection and positioning system;

[0026] Figure 4 It is a structural diagram of a dual infrared detector;

[0027] Figure 5 It is a structural diagram of a single infrared detector in one orientation;

[0028] Figure 6 It is a structural diagram of a single infrared detector in another orientation;

[0029] Figure 7 It is a connection schematic diagram of the data acquisition and processing structure.

[0030] Description of reference numerals in the figure: 1. Infrared detector array; 2. Converter valve tower; 3. Rigid support; 4. Infrared detector unit detection group; 5. Data acquisition device; 6. Local data processing module; 7. Optical fiber transmission module; 8. Remote data display module; 1-1. First infrared detector unit; 1-2. Second infrared detector unit; 1-3. Third infrared detector unit; 1-4. Fourth infrared detector unit; 1-5. Fifth infrared detector unit; 1-6. Sixth infrared detector unit; 1-7. Seventh infrared detector unit; 1-8. Eighth infrared detector unit; 1-9. Ninth infrared detector unit; 1-10. Tenth infrared detector unit; 1-11. Eleventh infrared detector unit; 1-12. Twelfth infrared detector unit; 1-13. Thirteenth infrared detector unit; 1-14. Fourteenth infrared detector unit; 2-1. First converter valve tower; 2-2. Second converter valve tower; 2-3. Third converter valve tower; 2-4. Fourth converter valve tower; 2-5. Fifth converter valve tower; 2-6. Sixth converter valve tower; 1-1-1. First detection group of the first layer of the first infrared detector unit; 1-1-2. Second detection group of the first layer of the first infrared detector unit; 1-1-3. Third detection group of the first layer of the first infrared detector unit; 1-1-4. Fourth detection group of the first layer of the first infrared detector unit; 1-1-5. Fifth detection group of the first layer of the first infrared detector unit; 1-1-6. Sixth detection group of the first layer of the first infrared detector unit; 1-1-7. Seventh detection group of the first layer of the first infrared detector unit; 1-1-8. Eighth detection group of the first layer of the first infrared detector unit; 4-1. Infrared detector; 4-2. Infrared filter lens; 4-3. Infrared detector partition; 5-1. First data acquisition device; 5-2. Second data acquisition device; 5-3. Third data acquisition device; 5-12. Twelfth data acquisition device; 5-13. Thirteenth data acquisition device; 5-14. Fourteenth data acquisition device. Detailed implementation mode

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] Embodiment 1

[0033] In the context of the continuous increase in the power rating of the converter valve, the demand for on-line real-time monitoring is particularly urgent, and there are many limitations in the existing on-line monitoring methods for the temperature of the converter valve. At the same time, in order to reduce the labor burden, improve the operation and management efficiency, and improve the monitoring accuracy, there is an urgent need for a system and method that can quickly, accurately and real-time detect and locate potential fault heating points, so as to realize more efficient and reliable fault monitoring and fault location of the converter valve equipment.

[0034] As Figure 1 shown, a converter valve heating fault detection and location system includes: an infrared detector array 1, a converter valve tower 2, a data acquisition device 5 and a local data processing module 6. Two columns of infrared detector units with uniform gaps and equal numbers are arranged outside the converter valve tower 2 to form the infrared detection array 1; the data acquisition device 5 is installed at the center point position of each infrared detector unit, and the installation height is the same as the height of the center point of the converter valve tower 2; the local data processing module 6 is connected to the data acquisition device 5 to calculate and obtain the determination of the converter valve fault heating and the location of the heating point.

[0035] The specific layout of the infrared detection array 1 includes: the converter valve towers 2 are arranged in parallel, and two columns of infrared detector units are arranged outside, that is, infrared detector units are provided at the four corners of each converter valve tower 2, and the number of converter valve towers 2 is one less than the number of each column of infrared detector units, as Figure 2 shown. The infrared detector unit consists of a rigid bracket 3 and a multi-layer infrared detector unit detection group 4, and the infrared detector unit detection group 4 is vertically arranged on the rigid bracket 3; in the vertical direction, the distance between adjacent two layers of the infrared detector unit detection group 4 is equal to the distance between adjacent two layers of the converter valve tower 2 in the vertical direction, that is, the height of each layer of the infrared detector unit detection group 4 corresponds to the height of the converter valve tower 2 one by one. As Figure 3 shown, the center height of the infrared detector unit and the converter valve tower 2 from the ground is 4000 mm, the distance between the central axis of the converter valve tower 2 and each column of infrared detector units is 5000 mm, and the distance between the center points of adjacent converter valve towers 2 is 8000 mm.

[0036] As Figure 4 , Figure 5 and Figure 6As shown in the figure, on the infrared detector units at the four endpoints of the infrared detection array 1, the infrared detector unit detection group 4 is a single infrared detector facing the converter valve tower 2, and the rest are dual infrared detectors. The infrared detector unit detection group 4 includes an infrared detector 4-1 and an infrared filter lens 4-2, and the infrared filter lens 4-2 covers in front of the infrared detector 4-1. The temperature range obtained by the infrared detector 4-1 is from 80°C to 105°C, corresponding to an infrared wavelength range of 8.2 μm to 7.66 μm. The infrared detector unit detection group 4 also includes an infrared detector partition 4-3, and the infrared detector partition 4-3 is arranged on the side of the infrared detector 4-1 to limit the orientation and detection range of the infrared detector 4-1. According to the arrangement of the infrared detection array 1, there are four types of orientations of the infrared detector 4-1, and the infrared detectors 4-1 on the infrared detector units all face the corresponding converter valve tower 2.

[0037] In the same layer and under the same monitoring environment, if there is no heating fault, the infrared energy detected by the infrared detectors 4-1 with the same orientation in different infrared detector units is the same; otherwise, there is an infrared energy difference. Therefore, heating faults can be detected by calculating and comparing the infrared energy.

[0038] The steps for the local server 6 to detect heating faults include: receiving the signals transmitted by the data acquisition device 5, adding up the infrared energy detected by the infrared detectors 4-1 in the same layer to obtain the first infrared energy. If the first infrared energy of a certain layer is greater than that of other layers and the first infrared energies of other layers are approximately equal, then there is a heating fault in the current layer corresponding to the converter valve tower 2, that is, the layer where the heating fault is located is located; in the layer where the heating fault is located, adding up the infrared energy detected by the four infrared detectors 4-1 corresponding to each converter valve tower 2 as the second infrared energy, and judging the second infrared energy of the current layer. If the second infrared energy of a certain converter valve tower 2 is greater than that of other converter valve towers 2 and the second infrared energies of other converter valve towers 2 are approximately equal, then there is a heating fault in that converter valve tower 2, that is, the corresponding converter valve tower 2 in the layer where the heating fault is located is located; by calculating the second infrared energy of each layer of the converter valve tower 2 with a heating fault, verifying the location of the heating fault, and confirming whether there are faults in other layers of the current converter valve tower 2. In addition, when a certain infrared detector 4-1 in the infrared detection array 1 fails, based on the first infrared energy measured by the infrared detectors in the same layer and the second infrared energy measured by the infrared detectors in the same unit, comprehensive judgment can still be made to detect and locate the heating fault, improving the robustness of the system.

[0039] As Figure 5 shown, the system also includes a remote data display module 8 connected to the local data processing module 6 through an optical fiber transmission module 7.

[0040] Embodiment 2

[0041] As shown Figure 1 in the figure, in this embodiment, six parallel converter valve towers 2 are provided, including a first converter valve tower 2-1, a second converter valve tower 2-2, a third converter valve tower 2-3, a fourth converter valve tower 2-4, a fifth converter valve tower 2-5, and a sixth converter valve tower 2-6. The first column of infrared detector arrays 1 is from the first infrared detector unit 1-1 to the seventh infrared detector unit 1-7, and the second column of infrared detector arrays 1 is from the eighth infrared detector unit 1-8 to the fourteenth infrared detector unit 1-14. Among them, taking the first converter valve tower 2-1 as an example, the infrared detector units corresponding to the four corners include: the first infrared detector unit 1-1, the second infrared detector unit 1-2, the eighth infrared detector unit 1-8, and the ninth infrared detector unit 1-9.

[0042] Each layer of each infrared detector unit corresponds to the converter valve tower and is eight layers. Among them: in the first infrared detector unit 1-1 and the eighth infrared detector unit 1-8 at the beginning of each column, and in the seventh infrared detector unit 1-7 and the fourteenth infrared detector unit 1-14 at the end of each column, the infrared detector unit detection group 4 of each layer is a single infrared detector facing the corresponding converter valve tower 2, and the rest in the middle are double infrared detectors. The orientation arrangement of the infrared detectors is as Figure 2 shown, and there are a total of four orientations. Among them, the infrared detector 4-1 of the first infrared detector unit 1-1 is the second orientation B, the infrared detectors 4-1 of the second infrared detector unit 1-2 to the sixth infrared detector unit 1-6 are the first orientation A and the second orientation B, the infrared detector 4-1 of the seventh infrared detector unit 1-7 is the first orientation A, the infrared detector 4-1 of the eighth infrared detector unit 1-8 is the fourth orientation D, the infrared detectors 4-1 of the ninth infrared detector unit 1-9 to the thirteenth infrared detector unit 1-13 are the third orientation C and the fourth orientation D, and the infrared detector 4-1 of the fourteenth infrared detector unit 1-14 is the third orientation C.

[0043] In the same layer and in the same monitoring environment, the infrared background noise is mutually removed between the infrared detectors. If there is no heating failure, the infrared energy detected by the infrared detectors 4-1 of the same orientation in different infrared detector units is consistent; otherwise, there is an infrared energy difference. When the energy is inconsistent, if it is only a tiny difference and the difference is inconvenient, it is also regarded as no heating failure occurring.

[0044] As Figure 5As shown in the figure, the infrared analog signal collected by the infrared detector unit is transmitted to the corresponding data acquisition device 5. The data acquisition device 5 performs analog-to-digital conversion on the infrared analog signal and outputs it to the local server 6. The local server 6 performs basic calculations on the valve tower fault heating for the digital signal. When there is a fault heating in the converter valve tower, the fault heating can be judged and the location of the heating point can be located according to the basic calculation. The location of the heating point is stored and transmitted through the optical fiber transmission module 7. The remote data display module 8 is used to receive and store the basic data after the fault heating signal is sensed and the formed location result, so as to quickly and accurately search and trace the historical data of the fault heating point, which is convenient for further research and analysis. In addition, the remote data display module 8 presents the processing result to the operator in a visual form, provides intuitive and clear information about the location of the converter valve fault heating point, and gives a real-time warning, which is convenient for the operator to make corresponding decisions quickly.

[0045] The local server 6 calculates and makes judgments based on the infrared signals detected by the infrared detectors at each layer. Taking the first layer of the converter valve tower 2 as an example, define the total infrared energy measured by each infrared detector 4-1 corresponding to the first layer facing the first converter valve tower 2-1 as E2-1-1, and the total infrared energy measured by each infrared probe of the first layer facing the second converter valve tower 2-2 as E2-2-1. Therefore, the infrared energy of the first layer of the first converter valve tower 2-1 is E2-1-1 = E1-1-1-B + E1-2-1-A + E1-8-1-D + E1-9-1-C; the infrared energy of the first layer of the second converter valve tower 2-2 is E2-2-1 = E1-2-1-B + E1-3-1-A + E1-9-1-D + E1-10-1-C; similarly, the infrared energy of the first layer of the third converter valve tower 2-3 is E2-3-1 = E1-3-1-B + E1-4-1-A + E1-10-1-D + E1-11-1-C, ……, and the infrared energy of the first layer of the sixth converter valve tower 2-6 is E2-6-1 = E1-6-1-B + E1-7-1-A + E1-13-1-D + E1-14-1-C.Among them, E1-1-1-B is the infrared ray energy collected by the second infrared detector facing B in the first layer detection group 1-1-1 of the first infrared detector unit, E1-2-1-A is the infrared ray energy collected by the first infrared detector facing A in the first layer detection group 1-2-1 of the second infrared detector unit, E1-8-1-D is the infrared ray energy collected by the fourth infrared detector facing D in the first layer detection group 1-8-1 of the eighth infrared detector unit, E1-9-1-C is the infrared ray energy collected by the third infrared detector facing C in the first layer detection group 1-9-1 of the ninth infrared detector unit, E1-2-1-B is the infrared ray energy collected by the second infrared detector facing B in the first layer detection group 1-2-1 of the second infrared detector unit, E1-3-1-A is the infrared ray energy collected by the third infrared detector facing A in the first layer detection group 1-3-1 of the third infrared detector unit, E1-9-1-D is the infrared ray energy collected by the fourth infrared detector facing D in the first layer detection group 1-9-1 of the ninth infrared detector unit, E1-10-1-C is the infrared ray energy collected by the third infrared detector facing C in the first layer detection group 1-10-1 of the tenth infrared detector unit, E1-3-1-B is the infrared ray energy collected by the fourth infrared detector facing B in the first layer detection group 1-3-1 of the third infrared detector unit, E1-4-1-A is the infrared ray energy collected by the first infrared detector facing A in the first layer detection group 1-4-1 of the fourth infrared detector unit, E1-10-1-D is the infrared ray energy collected by the fourth infrared detector facing D in the first layer detection group 1-10-1 of the tenth infrared detector unit, E1-11-1-C is the infrared ray energy collected by the third infrared detector facing C in the first layer detection group 1-11-1 of the eleventh infrared detector unit, E1-6-1-B is the infrared ray energy collected by the second infrared detector facing B in the first layer detection group 1-6-1 of the sixth infrared detector unit, E1-7-1-A is the infrared ray energy collected by the first infrared detector facing A in the first layer detection group 1-7-1 of the seventh infrared detector unit, E1-13-1-D is the infrared ray energy collected by the fourth infrared detector facing D in the first layer detection group 1-13-1 of the thirteenth infrared detector unit, E1-14-1-C is the infrared ray energy collected by the third infrared detector facing C in the first layer detection group 1-14-1 of the fourteenth infrared detector unit.

[0046] If E2-1-1 > E2-2-1, and E2-2-1 ≈ E2-3-1 ≈ E2-4-1 ≈ E2-5-1 ≈ E2-6-1, it indicates that there is a heating fault in the first layer of the first converter valve tower 2-1. Similarly, if E2-1-1 > E2-1-2, and E2-1-2 ≈ E2-1-3 ≈... ≈ E2-1-8, it can be verified that there is a heating fault in the first layer of the first converter valve tower 2-1, while the other layers are normal. Similarly, it is also possible to determine whether there are heating faults in other layers of other converter valves. Among them, E2-1-2 is the infrared energy of the second layer of the first converter valve tower 2-1, E2-1-2 is the infrared energy of the second layer of the first converter valve tower 2-1, E2-1-3 is the infrared energy of the third layer of the first converter valve tower 2-1, and E2-1-8 is the infrared energy of the eighth layer of the first converter valve tower 2-1.

[0047] As described above, it is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A converter valve heating fault detection and positioning system, characterized in that: The system comprises: an infrared detector array (1), a converter valve tower (2), a data acquisition device (5) and a local data processing module (6); Two rows of infrared detector units with uniform spacing and equal number are arranged outside the converter valve tower (2) to form an infrared detection array (1); the data acquisition device (5) is installed at the center point of each infrared detector unit, and the installation height is consistent with the height of the center point of the converter valve tower (2); the local data processing module (6) is connected to the data acquisition device (5) to calculate and obtain the converter valve fault heating judgment and the location of the heating point; The specific arrangement of the infrared detection array (1) includes: the converter valve towers (2) are arranged in parallel, and two rows of infrared detector units are arranged on the outside, that is, infrared detector units are arranged at the four corners of each converter valve tower (2), and the number of converter valve towers (2) is one less than the number of infrared detector units in each row; the infrared detector unit is composed of a rigid support (3) and a multi-layer infrared detector unit detection group (4), and the infrared detector unit detection group (4) is vertically arranged on the rigid support (3); in the vertical direction, the distance between two adjacent layers of the infrared detector unit detection group (4) is equal to the distance between two adjacent layers of the converter valve tower (2) in the vertical direction, that is, the height of each layer of the infrared detector unit detection group (4) and the converter valve tower (2) corresponds one to one.

2. A converter valve heating fault detection and positioning system according to claim 1, characterized in that: The infrared detector unit detection group (4) installed on the infrared detector units at the four ends of the infrared detection array (1) is a single infrared detector facing the converter valve tower (2), and the rest are double infrared detectors.

3. A converter valve heating fault detection and positioning system according to claim 1, characterized in that: The infrared detector unit detection group (4) comprises an infrared detector (4-1) and an infrared filter lens (4-2), wherein the infrared filter lens (4-2) covers the front of the infrared detector (4-1).

4. A converter valve heating fault detection and positioning system according to claim 3, characterized in that: The temperature range acquired by the infrared detector (4-1) is 80°C to 105°C, corresponding to the infrared wavelength range of 8.2 μm to 7.66 μm.

5. A converter valve heating fault detection and positioning system according to claim 3, characterized in that: The infrared detector unit detection group (4) also includes an infrared detector partition (4-3), which is arranged on the side of the infrared detector (4-1) to limit the direction and detection range of the infrared detector (4-1).

6. A converter valve heating fault detection and positioning system according to claim 3, characterized in that: According to the arrangement of the infrared detection array (1), there are four types of orientations of the infrared detectors (4-1), and the infrared detectors (4-1) on the infrared detector units all face the corresponding converter valve towers (2).

7. A converter valve heating fault detection and positioning system according to claim 6, characterized in that: In the same layer and under the same monitoring environment, if no heating failure occurs, the infrared energy detected by the infrared detectors (4-1) of the same direction in different infrared detector units is consistent; Otherwise there will be an infrared energy difference.

8. A converter valve heating fault detection and positioning system according to claim 1, characterized in that: The steps of the local server (6) performing heating fault detection include: The signal transmitted by the data acquisition device (5) is received, and the infrared energies detected by the infrared detectors (4-1) on the same layer are added to obtain the first infrared energy. If the first infrared energy of a certain layer is greater than the first infrared energy of other layers, and the first infrared energies of other layers are approximately equal, then a heating fault occurs in the current layer of the corresponding converter valve tower (2), and the layer where the heating fault occurs is located. In the layer where the heating fault occurs, the infrared energies detected by the four infrared detectors (4-1) corresponding to each converter valve tower (2) are added to form the second infrared energy, and the second infrared energy of the current layer is determined. If the second infrared energy of a certain converter valve tower (2) is greater than the second converter valve towers (2), and the second infrared energies of other converter valve towers (2) are approximately equal, then a heating fault occurs in the converter valve tower (2), and the corresponding converter valve tower (2) on the layer where the heating fault occurs is located. By calculating the second infrared energy of each layer of the converter valve tower (2) with the heating fault, the location of the heating fault is verified, and it is confirmed whether other layers of the current converter valve tower (2) have faults.

9. A converter valve heating fault detection and positioning system according to claim 1, characterized in that: The center points of the infrared detector units and the converter valve tower (2) are 4000 mm above the ground, the distance between the central axis of the converter valve tower (2) and each column of infrared detector units is 5000 mm, and the distance between the center points of adjacent converter valve towers (2) is 8000 mm.

10. A converter valve heating fault detection and positioning system according to claim 1, characterized in that: The system further comprises a remote data display module (8) connected to the local data processing module (6) via an optical fiber transmission module (7).

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