Temperature and flow monitoring system for power plant boilers

Abstract

This utility model discloses a temperature and flow monitoring system for a power plant boiler. The system includes: a thermocouple temperature measuring device with its probe in contact with the water-cooled wall pipes of the power plant boiler; an infrared temperature measuring device with its probe positioned opposite the observation port of the power plant boiler; a flow measuring device installed in the inlet and outlet header pipes of the water-cooled wall of the power plant boiler; and a data processing device for receiving and processing the measurement data transmitted by the thermocouple temperature measuring device, the infrared temperature measuring device, and the flow measuring device. Compared with related technologies, the temperature and flow monitoring system of this utility model integrates contact and non-contact temperature measuring devices and flow measuring devices, achieving synchronous acquisition of water-cooled wall temperature, furnace temperature, and flow parameters, ensuring that data can be transmitted and processed reliably in real time.

Description

Technical Field

[0001] This utility model relates to the field of safety monitoring technology for pulverized coal boilers in power plants, and in particular to a temperature and flow monitoring system for power plant boilers. Background Technology

[0002] Water-cooled walls are an important component of power plant boilers, and their operating condition directly affects the safety and efficiency of the power plant. Water-cooled walls typically consist of a series of closely arranged metal pipes that cover the inner wall of the boiler furnace, absorbing heat from the furnace and providing initial heating to the boiler feedwater.

[0003] During the operation of power plant boilers, the wall temperature of the water-cooled wall, the flow rate of the working fluid, and the temperature inside the boiler are key parameters to ensure the safe and efficient operation of the boiler. In related technologies, the wall temperature and flow rate monitoring of the water-cooled wall usually use separate equipment and systems, which can lead to problems such as data transmission lag. Utility Model Content

[0004] To address the shortcomings of related technologies, this utility model proposes a temperature and flow monitoring system for a power plant boiler, the system comprising:

[0005] Thermocouple temperature measuring device, whose temperature measuring probe is in contact with the water-cooled wall pipes of power plant boiler;

[0006] The infrared temperature measuring device has its temperature probe positioned opposite the observation hole of the power plant boiler.

[0007] A flow measuring device is installed in the inlet and outlet header pipes of the water-cooled wall of the power plant boiler.

[0008] A data processing unit is used to receive and process measurement data transmitted by thermocouple temperature measuring devices, infrared temperature measuring devices, and flow measuring devices.

[0009] Furthermore, the thermocouple temperature measuring device includes:

[0010] The first magnetic base is attached to the water-cooled wall fins between two adjacent water-cooled wall pipes;

[0011] The K-type thermocouple forms the temperature measuring probe of the thermocouple temperature measuring device. One end of the K-type thermocouple is connected to the first magnetic base, and the other end of the K-type thermocouple is in contact with the water-cooled wall pipe.

[0012] Furthermore, the thermocouple temperature measuring device also includes a transmission rod and a damper. One end of the transmission rod is connected to a K-type thermocouple, and the other end of the transmission rod is connected to one end of the damper. The other end of the damper is connected to the first magnetic base.

[0013] Furthermore, the infrared temperature measurement device includes:

[0014] The second magnetic base has a first connecting surface and a second connecting surface. The second magnetic base is attached to the furnace wall around the observation hole through the first connecting surface.

[0015] A movable bracket is located on the second connecting surface and can move relative to the second magnetic base;

[0016] The main body is mounted on the movable support frame;

[0017] An infrared temperature sensor, which constitutes the temperature probe of an infrared temperature measuring device, is connected to the main body and is positioned opposite the observation hole.

[0018] Furthermore, the system also includes a display device connected to the data processing device for displaying measurement data received by the data processing device from the thermocouple temperature measuring device, the infrared temperature measuring device, and the flow measuring device.

[0019] Compared with related technologies, the temperature and flow monitoring system of this utility model integrates contact and non-contact temperature measuring devices and flow measuring devices, realizing the synchronous acquisition of water-cooled wall temperature, furnace temperature and flow parameters, ensuring that the data can be transmitted and processed in real time and reliably. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the temperature and flow monitoring system for a power plant boiler according to an embodiment of the present utility model;

[0021] Figure 2 This is a schematic diagram of the thermocouple temperature measuring device according to an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of the infrared temperature measuring device according to an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the flow measuring device according to an embodiment of the present invention.

[0024] Explanation of icon numbers:

[0025] Thermocouple temperature measuring device 100; first magnetic base 110; K-type thermocouple 120; transmission rod 130; damper 140; infrared temperature measuring device 200; second magnetic base 210; movable bracket 220; main body 230; infrared temperature sensor 240; flow measuring device 300; data processing device 400; display device 500; water-cooled wall pipe 600; observation hole 700; water-cooled wall inlet and outlet header pipe 800.

[0026] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0027] The solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0028] It should be noted that all directional indicators (such as up, down, left, right, front, back, top, bottom, side, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0029] It should also be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component present. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component present.

[0030] Furthermore, the descriptions involving "first," "second," etc., in the embodiments of this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.

[0031] To address the technical deficiencies in related technologies, this embodiment provides a temperature and flow monitoring system for a power plant boiler. Combined with... Figures 1 to 4 As shown, the temperature and flow monitoring system for the power plant boiler in this embodiment includes a thermocouple temperature measuring device 100, an infrared temperature measuring device 200, a flow measuring device 300, and a data processing device 400.

[0032] The thermocouple temperature measuring device 100 has its temperature probe in contact with the water-cooled wall pipe 600 of the power plant boiler to detect the temperature of the water-cooled wall. Multiple thermocouple temperature measuring devices 100 can be installed as needed. The infrared temperature measuring device 200 has its temperature probe positioned opposite the observation port 700 of the power plant boiler to detect the internal temperature of the boiler. The flow measuring device 300 is installed in the inlet and outlet header pipes 800 of the water-cooled wall of the power plant boiler to detect the flow parameters within the pipes.

[0033] The data processing device 400 has three data interfaces, which are respectively connected to the thermocouple temperature measuring device 100, the infrared temperature measuring device 200, and the current measuring device 300. The data processing device 400 is used to receive and process the measurement data transmitted by the thermocouple temperature measuring device 100, the infrared temperature measuring device 200, and the current measuring device 300.

[0034] Compared with related technologies, the temperature and flow monitoring system in this embodiment integrates contact and non-contact temperature measuring devices and flow measuring device 300 to achieve synchronous acquisition of water-cooled wall temperature, furnace temperature and flow parameters, ensuring that the data can be transmitted and processed reliably in real time.

[0035] Furthermore, to facilitate disassembly and replacement of the detection position, the thermocouple temperature measuring device 100 of this embodiment includes a first magnetic base 110, which can be made of an iron-chromium-cobalt permanent magnet alloy. To prevent slippage, the adsorption surface of the first magnetic base 110 can be formed with anti-slip textures. The first magnetic base 110 is adsorbed onto the water-cooled wall fins between two adjacent water-cooled wall pipes 600. The thermocouple temperature measuring device 100 of this embodiment also includes a K-type thermocouple 120, which constitutes the temperature measuring probe of the thermocouple temperature measuring device 100. One end of the K-type thermocouple 120 is connected to the first magnetic base 110, and the other end of the K-type thermocouple 120 is in contact with the water-cooled wall pipe 600.

[0036] Furthermore, the thermocouple temperature measuring device 100 also includes a transmission rod 130 and a damper 140. One end of the transmission rod 130 is connected to the K-type thermocouple 120, and the other end of the transmission rod 130 is connected to one end of the damper 140. The other end of the damper 140 is connected to the first magnetic base 110. The position of the K-type thermocouple 120 can be adjusted via the transmission rod 130, thereby adjusting the contact pressure of the K-type thermocouple 120 and ensuring tight contact between the K-type thermocouple 120 and the water-cooled wall tube.

[0037] Furthermore, the infrared temperature measuring device 200 includes a second magnetic base 210, a movable support 220, a main body 230, and an infrared temperature sensor 240. The second magnetic base 210 has a first connecting surface and a second connecting surface, and is attached to the furnace wall around the observation hole 700 via the first connecting surface. The second magnetic base 210 can also be made of an iron-chromium-cobalt permanent magnet alloy. The movable support 220 is disposed on the second connecting surface and is movable relative to the second magnetic base 210. The main body 230 is disposed on the movable support 220, and the infrared temperature sensor 240 is connected to the main body 230 and disposed opposite to the observation hole 700. The main body 230 has an adjustable direction function, enabling horizontal rotation and pitch adjustment to adjust the position of the infrared temperature sensor 240. The infrared temperature sensor 240 constitutes the temperature measuring probe of the infrared temperature measuring device 200.

[0038] Furthermore, the temperature and flow monitoring system for the power plant boiler in this embodiment also includes a display device 500, which is connected to the data processing device 400 to display the measurement data received by the data processing device 400 from the thermocouple temperature measuring device 100, the infrared temperature measuring device 200, and the flow measuring device 300. Exemplarily, the display device 500 and the data processing device 400 can be integrated into a tablet computer form.

[0039] The above description is only a part or preferred embodiment of this utility model. Neither the text nor the drawings should limit the scope of protection of this utility model. All equivalent structural transformations made using the content of this utility model specification and drawings under the overall concept of this utility model, or direct / indirect applications in other related technical fields, are included within the scope of protection of this utility model.

Claims

1. A temperature and flow monitoring system for a utility boiler, characterized by, include: Thermocouple temperature measuring device, whose temperature measuring probe is in contact with the water-cooled wall pipes of power plant boiler; The infrared temperature measuring device has its temperature probe positioned opposite the observation hole of the power plant boiler. A flow measuring device is installed in the inlet and outlet header pipes of the water-cooled wall of the power plant boiler. A data processing device is used to receive and process measurement data transmitted by the thermocouple temperature measuring device, the infrared temperature measuring device, and the flow measuring device.

2. The temperature and flow monitoring system of a power plant boiler according to claim 1, characterized in that, The thermocouple temperature measuring device includes: The first magnetic base is attached to the water-cooled wall fins between two adjacent water-cooled wall pipes; A K-type thermocouple, which constitutes the temperature measuring probe of the thermocouple temperature measuring device, has one end connected to the first magnetic base and the other end in contact with the water-cooled wall pipe.

3. The temperature and flow monitoring system of a power plant boiler according to claim 2, characterized in that, The thermocouple temperature measuring device further includes a transmission rod and a damper. One end of the transmission rod is connected to the K-type thermocouple, and the other end of the transmission rod is connected to one end of the damper. The other end of the damper is connected to the first magnetic base.

4. The temperature and flow monitoring system of a utility boiler according to claim 1, characterized in that, The infrared temperature measuring device includes: The second magnetic base has a first connecting surface and a second connecting surface, and the second magnetic base is attached to the furnace wall around the observation hole through the first connecting surface. A movable bracket is disposed on the second connecting surface and is movable relative to the second magnetic base; The main body is disposed on the movable support; An infrared temperature sensor constitutes the temperature probe of the infrared temperature measuring device. The infrared temperature sensor is connected to the main body and is positioned opposite to the observation hole.

5. The temperature and flow monitoring system of a power plant boiler according to any one of claims 1 to 4, characterized in that, It also includes a display device connected to the data processing device for displaying measurement data received by the data processing device from the thermocouple temperature measuring device, the infrared temperature measuring device, and the flow measuring device.

Images