Infrared temperature measurement system based on slip ring chamber

Abstract

The utility model provides an infrared temperature measurement system based on a slip ring chamber. Comprising a thermal imaging temperature measurement card machine, a front-end box of which the input end is connected with the output end of the thermal imaging temperature measurement card machine, an optical splitter of which the input end is connected with the output end of the front-end box, and an optical fiber terminal of which the input end is connected with the output end of the optical splitter, the input end of the switch is connected with the output end of the optical fiber terminal; the input end of the background monitoring host is connected with the output end of the switch; the thermal imaging temperature measurement card machine is installed on the inner wall of the slip ring chamber and used for obtaining temperature data and image data of a slip ring and a carbon brush in the slip ring chamber in real time, and the thermal imaging temperature measurement card machine is installed on the inner wall of the slip ring chamber and used for obtaining temperature data and image data of the slip ring and the carbon brush in the slip ring chamber at different angles in real time. And the temperature data and the image data are transmitted to the background monitoring host through a networking mode of the front-end box, the optical splitter, the optical fiber terminal, the switch and the background monitoring host, so that the on-line real-time monitoring requirement on the temperature of the slip ring chamber of the power plant is met.

Description

Technical Field

[0001] The utility model relates to the technical field of online monitoring of power plants, in particular to an infrared temperature measurement system based on a slip ring chamber. Background Art

[0002] The carbon brushes and slip rings in the slip ring chamber of a power plant are devices for dynamic and static contact and energy exchange in the generator. The slip ring is a rotating contact, usually made of metal material, installed on the shaft of the generator rotor. Its main function is to transmit the rotating electrical energy to the external circuit. The slip ring contacts the stationary carbon brushes, allowing the current to flow from the rotor to the external circuit, thereby realizing the electrical energy output of the generator. The carbon brush is a device made of conductive material, usually composed of a carbon block or carbon fiber containing carbon powder. The carbon brush contacts the slip ring and applies a certain pressure to ensure good electrical contact. It is a device for dynamic and static contact and energy exchange in the generator.

[0003] The Chinese patent application with the announcement number CN203984091U discloses a high-voltage switch infrared thermal imaging online monitoring integrated processing unit, including a high-voltage switch and a power supply, an infrared thermal imaging monitoring sensor and a visible light imaging monitoring sensor that can monitor the high-voltage switch; and a signal detection device pan / tilt, a signal collector, an integrated processing unit, a display, a printer and a data switch that are sequentially connected by wires. However, since the temperature monitoring points in the slip ring chamber are generally in an environment of high voltage, high current and strong magnetic field, and some monitoring points are even in a closed space, due to strong electromagnetic noise, high-voltage insulation, space limitations and other problems, it is impossible to detect the temperature status of the slip ring and carbon brush in the slip ring chamber at different angles in real time. Therefore, it is very necessary to provide an infrared temperature measurement system based on the slip ring chamber, which can realize the online monitoring of the temperature status of the slip ring and carbon brush in the slip ring chamber at different angles. Utility Model Content

[0004] The purpose of this utility model is to provide an infrared temperature measurement system based on a slip ring chamber. The thermal imaging temperature measurement card machine is installed on the inner wall of the slip ring chamber to obtain the temperature data and image data of the slip ring and carbon brush in the slip ring chamber at different angles in real time, and transmit the temperature data and image data to the background monitoring host through the networking mode of the front-end box, splitter, optical fiber terminal, switch and background monitoring host, so as to realize the online real-time monitoring demand for the temperature of the slip ring chamber of the power plant. In order to realize the above technical features, the purpose of this utility model is realized as follows:

[0005] An infrared temperature measurement system based on a slip ring chamber, comprising a thermal imaging temperature measurement card machine, a front-end box whose input end is connected to the output end of the thermal imaging temperature measurement card machine, an optical splitter whose input end is connected to the output end of the front-end box, an optical fiber terminal whose input end is connected to the output end of the optical splitter, a switch whose input end is connected to the output end of the optical fiber terminal, and a background monitoring host whose input end is connected to the output end of the switch;

[0006] The thermal imaging temperature measuring card machine is installed on the inner wall of the slip ring chamber, and is used to obtain the temperature data and image data of the slip ring and the carbon brush in the slip ring chamber in real time.

[0007] The plurality of thermal imaging temperature measuring card machines are distributed in a circular array with the axis of the slip ring chamber as the center.

[0008] The thermal imaging temperature measuring card machine is equipped with an infrared thermal imaging lens, a visible light imaging lens and a field of view lens.

[0009] The front-end box includes multiple optical network units, which are arranged in a one-to-one correspondence with the thermal imaging temperature measurement card machine. The output end of the thermal imaging temperature measurement card machine is connected to the input end of the optical network unit, and the output end of the optical network unit is connected to the input end of the splitter.

[0010] The field of view of the field of view lens is 90°, and the spatial resolution of the field of view lens is 5.71 mrad.

[0011] The inner wall of the slip ring chamber is provided with a base, the base is connected to a universal bracket, and the thermal imaging temperature measuring card machine is connected to the base via the universal bracket.

[0012] The background monitoring host is an infrared imaging analyzer or a host computer.

[0013] The utility model has the following beneficial effects:

[0014] 1. By setting up multiple thermal imaging temperature measuring card machines, the thermal imaging temperature measuring card machines can be deployed in all directions to monitor the temperature status of the slip ring and carbon brush in the slip ring chamber at different angles. In addition, through the networking mode of the front-end box, splitter, optical fiber terminal, switch and background monitoring host, the online real-time monitoring demand for the temperature of the slip ring chamber of the power plant can be realized;

[0015] 2. By improving the traditional binocular infrared thermal imaging technology, a 90° wide field of view lens is specially customized to achieve all-round and accurate monitoring of narrow and closed spaces. The specially designed temperature monitoring points can achieve accurate monitoring of slip rings and carbon brushes, making up for the problems that are prone to occur during the inspection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 A point setting diagram of the thermal imaging temperature measurement card machine provided in the embodiment of the utility model;

[0018] Figure 2 A schematic diagram of a framework of an infrared temperature measurement system based on a slip ring chamber provided in an embodiment of the utility model;

[0019] Figure 3 This is a schematic diagram of the installation of the thermal imaging temperature measurement card machine provided by the utility model;

[0020] In the figure: thermal imaging temperature measuring card machine 1, front end box 2, splitter 3, optical fiber terminal 4, switch 5, background monitoring host 6, slip ring room 7, slip ring 8, carbon brush 9, base 10, universal bracket 11, head cover 12, conductive plate 13. DETAILED DESCRIPTION

[0021] The embodiments of the present utility model are further described below in conjunction with the accompanying drawings.

[0022] See attached Figure 1-3 In order to realize the above technical features, the purpose of the utility model is achieved as follows:

[0023] An infrared temperature measurement system based on a slip ring chamber comprises a thermal imaging temperature measurement card machine 1, a front end box 2 whose input end is connected to an output end of the thermal imaging temperature measurement card machine 1, an optical splitter 3 whose input end is connected to an output end of the front end box 2, an optical fiber terminal 4 whose input end is connected to an output end of the optical splitter 3, a switch 5 whose input end is connected to an output end of the optical fiber terminal 4, and a background monitoring host 6 whose input end is connected to an output end of the switch 5; the thermal imaging temperature measurement card machine 1 is installed on an inner wall of a slip ring chamber 7, and is used for obtaining temperature data and image data of a slip ring 8 and a carbon brush 9 in the slip ring chamber 7 in real time.

[0024] In this embodiment, the thermal imaging temperature measuring card machine is a dual-spectrum network temperature measuring thermal imager that integrates infrared thermal imaging and visible light. The thermal imaging temperature measuring card machine is small in size and flexible in deployment. It is very suitable for deployment in narrow and confined spaces such as power distribution cabinets and data rooms. It can continuously monitor and collect temperature of key electrical equipment online and analyze the temperature. If the temperature setting threshold is exceeded, an alarm can be triggered. The infrared thermal imaging technology used belongs to the array temperature measurement technology. There are 49152 pixels in a single picture. Each pixel contains temperature information and corresponds to a point on the monitoring target. The thermal imaging temperature measuring card machine 1 is installed on the inner wall of the slip ring chamber 7, and is used to obtain the temperature data and image data of the slip ring and carbon brush in the slip ring chamber at different angles in real time, and transmit the temperature data and image data to the background monitoring host through the networking mode of the front-end box, splitter, optical fiber terminal, switch and background monitoring host, so as to realize the online real-time monitoring demand for the temperature of the slip ring chamber of the power plant.

[0025] In this embodiment, the thermal imaging temperature measurement card machine is equipped with an aviation plug and supports POE power supply. A single device only needs to lay one network cable to meet the communication and power supply requirements. Considering the convenience of the slip ring room maintenance and hoisting, a three-section cable is used, and a quick-release plug is set at the same length as the slip ring room bracket to facilitate quick plugging and unplugging when the bracket is hoisted as a whole, and the three network ports need to be sealed.

[0026] Furthermore, a plurality of thermal imaging temperature measuring card machines 1 are distributed in a circular array with the axis of the slip ring chamber 7 as the center.

[0027] In this embodiment, if Figure 1 , Figure 3 As shown in the figure, in order to realize 360° real-time temperature monitoring of the slip ring chamber without blind spots, a total of 8 thermal imaging temperature measuring card machines are installed around the inner wall of the slip ring chamber. The installation height of each thermal imaging temperature measuring card machine is flush with the conductive plate between the two layers of carbon brushes. In this way, each thermal imaging temperature measuring card machine can realize real-time temperature monitoring and alarm of the slip ring, all carbon brushes, and conductive plates at the same time.

[0028] By installing multiple thermal imaging temperature measuring card machines in the slip ring room, the slip rings and carbon brushes in all areas of the slip ring room can be monitored. Through the full coverage of the thermal imaging temperature measuring card machine, any abnormal situation, fault or potential safety hazard can be discovered in time, and appropriate measures can be taken quickly to ensure the safety of equipment and personnel. Comprehensive monitoring of the slip ring room can provide more information and data, which is helpful for fault diagnosis and maintenance work.

[0029] Furthermore, the thermal imaging temperature measurement card machine 1 is equipped with an infrared thermal imaging lens, a visible light imaging lens and a field of view lens.

[0030] Furthermore, the front-end box 2 includes multiple optical network units, which are arranged in a one-to-one correspondence with the thermal imaging temperature measuring card machine 1. The output end of the thermal imaging temperature measuring card machine 1 is connected to the input end of the optical network unit, and the output end of the optical network unit is connected to the input end of the splitter 3.

[0031] In this embodiment, the optical network unit is an ONU (Optical Network Unit), and the optical splitter can be an OBD secondary optical splitter, which has the ability to distribute an input optical signal to multiple output optical fiber channels, and these output channels can be connected to the optical fiber line terminal. Through the OBD secondary optical splitter, the optical signal can be effectively distributed in the network to achieve multi-channel signal transmission. The optical line terminal (OLT) works in conjunction with the optical network unit (ONU) located in the front-end box to achieve bidirectional data transmission.

[0032] The front-end box in the slip ring room provides working power for the thermal imaging temperature measurement card machine. The power supply method is POE (network cable). Multiple front-end box signals are combined into one output optical signal through the OBD secondary optical splitter. The OLT board can receive and process multiple ODB secondary optical splitter optical signal data. Finally, the infrared temperature measurement data is aggregated through the switch and input into the background monitoring host, and connected to the temperature measurement platform through the customized software and hardware platform.

[0033] Furthermore, the field of view of the field of view lens is 90°, and the spatial resolution of the field of view lens is 5.71 mrad.

[0034] Furthermore, a base 10 is installed on the inner wall of the slip ring chamber 7, and the base 10 is connected to the universal bracket 11. The thermal imaging temperature measuring card machine 1 is connected to the base 10 through the universal bracket 11. The setting of the universal bracket facilitates the adjustment of the installation angle of the thermal imaging temperature measuring card machine.

[0035] Furthermore, the background monitoring host 6 is an infrared imaging analyzer or a host computer. The infrared imaging analyzer or the host computer can realize the temperature display, thermal imaging display and visible light video display of the infrared thermal imaging card machine. The thermal imaging temperature measurement card machine is equipped with a high-sensitivity infrared detector and a high-resolution visible light detector, which can perform all-weather real-time temperature monitoring of the slip rings and carbon brushes in the slip ring chamber, detect the temperature changes of the slip rings and carbon brushes, and realize accurate temperature measurement. When the temperature is abnormal, a sound alarm reminder is issued to assist the user to quickly locate the hidden danger point, reduce property loss, and reduce safety hazards. The thermal imaging information and temperature information of the thermal imaging temperature measurement card machine can be transmitted to the background monitoring host through the switch for display. The background monitoring host supports dual-light fusion, picture-in-picture and other image processing technologies to realize the fusion and superposition of thermal imaging and visible light images, and improve the recognition of image details.

Claims

1. An infrared temperature measurement system based on a slip ring chamber, characterized in that: It comprises a thermal imaging temperature measuring card machine (1), a front end box (2) whose input end is connected to the output end of the thermal imaging temperature measuring card machine (1), an optical splitter (3) whose input end is connected to the output end of the front end box (2), an optical fiber terminal (4) whose input end is connected to the output end of the optical splitter (3), a switch (5) whose input end is connected to the output end of the optical fiber terminal (4), and a background monitoring host (6) whose input end is connected to the output end of the switch (5); The thermal imaging temperature measuring card machine (1) is installed on the inner wall of the slip ring chamber (7) and is used to obtain temperature data and image data of the slip ring (8) and the carbon brush (9) in the slip ring chamber (7) in real time.

2. According to claim 1, an infrared temperature measurement system based on a slip ring chamber is characterized in that: The plurality of thermal imaging temperature measuring card machines (1) are distributed in a circular array with the axis of the slip ring chamber (7) as the center.

3. The infrared temperature measurement system based on the slip ring chamber according to claim 2 is characterized in that: The thermal imaging temperature measurement card machine (1) is equipped with an infrared thermal imaging lens, a visible light imaging lens and a field of view lens.

4. The infrared temperature measurement system based on the slip ring chamber according to claim 3 is characterized in that: The front-end box (2) comprises a plurality of optical network units, the optical network units and the thermal imaging temperature measurement card machines (1) are arranged in a one-to-one correspondence, the output end of the thermal imaging temperature measurement card machine (1) is connected to the input end of the optical network unit, and the output end of the optical network unit is connected to the input end of the optical splitter (3).

5. The infrared temperature measurement system based on the slip ring chamber according to claim 4 is characterized in that: The field of view of the field of view lens is 90°, and the spatial resolution of the field of view lens is 5.71 mrad.

6. The infrared temperature measurement system based on the slip ring chamber according to claim 5 is characterized in that: A base (10) is installed on the inner wall of the slip ring chamber (7), the base (10) is connected to a universal bracket (11), and the thermal imaging temperature measurement card machine (1) is connected to the base (10) via the universal bracket (11).

7. The infrared temperature measurement system based on the slip ring chamber according to claim 6 is characterized in that: The background monitoring host (6) is an infrared imaging analyzer or a host computer.

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