Low nitrogen oxide combustion system based on multi-point online monitoring

Abstract

The utility model discloses a low-nitrogen-oxide combustion system based on multi-point online monitoring, and relates to the field of boilers, the low-nitrogen-oxide combustion system comprises a boiler, four monitoring mechanisms installed on the boiler and a monitoring box, the four monitoring mechanisms are symmetrically installed on the outer wall of the boiler, the four monitoring mechanisms are all electrically connected to the monitoring box, and the monitoring box is electrically connected to the boiler. A smoke pipe is fixedly connected to the outer wall of the top of the boiler, a mounting opening is formed in the outer wall of the smoke pipe, a temperature sensor is fixedly connected to the inner wall of the mounting opening, and the temperature sensor is electrically connected to the monitoring box. The four monitoring mechanisms are arranged on the boiler, the oxygen sensors in the monitoring mechanisms can monitor the oxygen concentration in the boiler in real time, the temperature sensor is arranged on the smoke pipe, and coal in the boiler can be conveniently assisted to be fully combusted according to the oxygen concentration in the boiler and the temperature sensor on the smoke pipe; the problem that the combustion condition in an existing coal-fired boiler is inconvenient to monitor is solved.

Description

Technical Field

[0001] This application relates to the field of boilers, and more particularly to a low-NOx combustion system based on multi-point online monitoring. Background Technology

[0002] Nitrogen oxides (NOx) are one of the major pollutants that my country needs to reduce emissions of at present. In coal-fired power plants, it is a key component of ultra-low emission retrofitting. Low-NOx combustion technology has certain environmental advantages, but it also has some impact on boiler operation, creating a conflict between safe operation and boiler efficiency. Resolving this conflict is not only a technical requirement for safe production in power plants, but will also significantly improve overall social benefits.

[0003] Existing boilers only monitor the temperature during combustion. However, the oxygen content in the boiler is crucial for the complete combustion of coal, and existing boilers lack a dedicated system for monitoring combustion, thus failing to monitor the combustion process. Utility Model Content

[0004] To address the problem of inconvenient monitoring of combustion in existing coal-fired boilers, this application provides a low-NOx combustion system based on multi-point online monitoring.

[0005] The low-NOx combustion system based on multi-point online monitoring provided in this application adopts the following technical solution:

[0006] A low-NOx combustion system based on multi-point online monitoring includes a boiler, four monitoring mechanisms installed on the boiler, and a monitoring box. The four monitoring mechanisms are symmetrically installed on the outer wall of the boiler, and each of the four monitoring mechanisms is electrically connected to the monitoring box. A flue is fixedly connected to the outer wall of the top of the boiler, and an installation port is opened on the outer wall of the flue. A temperature sensor is fixedly connected to the inner wall of the installation port, and the temperature sensor is electrically connected to the monitoring box.

[0007] By adopting the above technical solution, four monitoring devices are set on the boiler. The four monitoring devices facilitate the monitoring of oxygen concentration in the boiler, and the temperature sensor on the flue pipe facilitates the monitoring of exhaust gas temperature in the boiler. When the coal in the boiler is fully burned, the exhaust gas temperature in the flue pipe is higher, and vice versa. The electrical components in the monitoring box facilitate the real-time analysis of the data collected by each sensor.

[0008] Preferably, two detection ports are provided on each of the two outer walls of the boiler, and four monitoring mechanisms are respectively installed on the inner walls of the four detection ports.

[0009] By adopting the above technical solution, the monitoring device can be easily installed through the detection port in the boiler.

[0010] Preferably, the monitoring mechanism includes an installation sleeve fixedly connected to the inner wall of the detection port, and an installation post is inserted into the inner wall of the installation sleeve.

[0011] By adopting the above technical solution, the installation sleeve facilitates the assembly and disassembly of the mounting column.

[0012] Preferably, an oxygen sensor is fixedly connected to one end of the mounting column, and a mounting base is fixedly connected to the other end of the mounting column.

[0013] By adopting the above technical solution, the oxygen concentration in the boiler can be easily detected by installing an oxygen sensor on the column. When the oxygen concentration in the boiler is within a certain range, the coal in the boiler will be fully burned.

[0014] Preferably, the inner wall of the mounting sleeve has two symmetrically arranged mounting grooves, and the outer wall of the mounting column is equipped with two mounting components that match the mounting grooves.

[0015] By adopting the above technical solution, the mounting column can be easily fixed in the mounting sleeve through the setting of the mounting components, and the mounting groove and the mounting components are matched.

[0016] Preferably, the mounting assembly includes a mounting base fixedly connected to the mounting column, and the specifications of the mounting base match the specifications of the mounting groove. An opening is provided on one inner wall of the mounting base, and a clamping seat is slidably connected to the inner wall of the opening. The clamping seat has a T-shaped cross-section.

[0017] By adopting the above technical solution, the clamping seat can be easily slidably installed by setting the mounting base. The clamping seat extends out and presses against the mounting groove, so that the mounting column can be installed in the mounting sleeve.

[0018] Preferably, the inner walls of both sides of the mounting base are rotatably connected to the same bidirectional screw, and the outer wall of the bidirectional screw is screwed with two symmetrically arranged threaded sleeves. The outer walls of the two threaded sleeves are rotatably connected to connecting plates, and one end of each connecting plate is rotatably connected to the clamping seat.

[0019] By adopting the above technical solution, the rotation of the bidirectional screw directly drives the two threaded sleeves to move towards or away from each other. When the two threaded sleeves move, they directly cooperate with the connecting plate to drive the clamping seat to move.

[0020] Preferably, the outer wall of one side of the fixed base has two symmetrically arranged circular grooves, and the inner walls of the two circular grooves are rotatably connected to rotating parts, one end of the drive shaft of the rotating part is fixedly connected to a bidirectional screw.

[0021] By adopting the above technical solution, the rotation of the rotating part directly drives the bidirectional screw to rotate, thereby facilitating the adjustment of the position of the clamping seat.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. This application solves the problem of inconvenient monitoring of combustion in existing coal-fired boilers by setting up four monitoring mechanisms on the boiler. The oxygen sensor in the monitoring mechanism can monitor the oxygen concentration in the boiler in real time, and the temperature sensor on the flue pipe can be set up to facilitate the full combustion of coal in the boiler based on the oxygen concentration in the boiler and the temperature sensor on the flue pipe.

[0024] 2. This application provides two mounting components on the mounting column, and the cooperation between the mounting components and the mounting slot facilitates quick assembly and disassembly of the mounting column, thereby facilitating the regular disassembly and maintenance of the oxygen sensor in the future. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of a low-NOx combustion system based on multi-point online monitoring, according to an embodiment of this application.

[0026] Figure 2 This is a schematic diagram illustrating the main structure of the monitoring mechanism in the embodiments of this application;

[0027] Figure 3 This is a schematic diagram illustrating the cross-sectional structure of the mounting components, which is the main feature of this application.

[0028] Reference numerals: 1. Monitoring box; 2. Boiler; 3. Monitoring mechanism; 4. Flue; 5. Temperature sensor; 6. Mounting sleeve; 7. Mounting groove; 8. Mounting column; 9. Fixing seat; 10. Rotating part; 11. Oxygen sensor; 12. Mounting assembly; 13. Mounting seat; 14. Bidirectional screw; 15. Threaded sleeve; 16. Connecting plate; 17. Clamping seat. Detailed Implementation

[0029] The following is in conjunction with the appendix Figures 1-3 This application will be described in further detail.

[0030] This application discloses a low-NOx combustion system based on multi-point online monitoring.

[0031] Reference Figure 1-3 A low-NOx combustion system based on multi-point online monitoring includes a boiler 2, four monitoring units 3 installed on the boiler 2 and a monitoring box 1. The four monitoring units 3 are symmetrically installed on the outer wall of the boiler 2, and all four monitoring units 3 are electrically connected to the monitoring box 1.

[0032] Reference Figure 1A flue pipe 4 is fixedly connected to the top outer wall of the boiler 2, and an installation port is opened on the outer wall of the flue pipe 4. A temperature sensor 5 is fixedly connected to the inner wall of the installation port, and the temperature sensor 5 is electrically connected to the monitoring box 1. Two detection ports are opened on both sides of the outer wall of the boiler 2, and four monitoring mechanisms 3 are respectively installed on the inner wall of the four detection ports. The monitoring mechanism 3 can be conveniently installed through the detection ports in the boiler 2.

[0033] In use, four monitoring mechanisms 3 are set on the boiler 2. The four monitoring mechanisms 3 facilitate the monitoring of the oxygen concentration in the boiler 2. The temperature sensor 5 on the flue pipe 4 facilitates the monitoring of the exhaust gas temperature in the boiler 2. When the coal in the boiler 2 is fully burned, the exhaust gas temperature in the flue pipe 4 is higher, and vice versa. The electrical components in the monitoring box 1 facilitate the real-time analysis of the data collected by each sensor.

[0034] Reference Figure 1-2 The monitoring mechanism 3 includes an installation sleeve 6 fixedly connected to the inner wall of the detection port, and an installation column 8 is inserted into the inner wall of the installation sleeve 6. An oxygen sensor 11 is fixedly connected to one end of the installation column 8, and a fixing seat 9 is fixedly connected to the other end of the installation column 8. Two symmetrically arranged installation slots 7 are opened on the inner wall of the installation sleeve 6. Two installation components 12 that match the installation slots 7 are installed on the outer wall of the installation column 8. The installation sleeve 6 facilitates the installation and disassembly of the installation column 8. The oxygen sensor 11 on the installation column 8 facilitates the detection of the oxygen concentration in the boiler 2. When the oxygen concentration in the boiler 2 is within a certain range, the coal in the boiler 2 is fully burned. The installation components 12 facilitate the fixing of the installation column 8 in the installation sleeve 6. The installation slots 7 and the installation components 12 are matched.

[0035] Reference Figure 2-3 The mounting assembly 12 includes a mounting base 13 fixedly connected to the mounting column 8, and the specifications of the mounting base 13 match the specifications of the mounting groove 7. An opening is provided on one inner wall of the mounting base 13, and a clamping seat 17 is slidably connected to the inner wall of the opening. The clamping seat 17 has a T-shaped cross-section. The same bidirectional screw 14 is rotatably connected to the inner walls of both sides of the mounting base 13, and two symmetrically arranged threaded sleeves 15 are screwed to the outer wall of the bidirectional screw 14. A connecting plate 16 is rotatably connected to the outer wall of both threaded sleeves 15, and one end of both connecting plates 16 is rotatably connected to the clamping seat 17. Two symmetrically arranged circular grooves are provided on one outer wall of the fixed base 9, and a rotating part 10 is rotatably connected to the inner wall of both circular grooves. One end of the drive shaft of the rotating part 10 is fixedly connected to the bidirectional screw 14.

[0036] In use, the rotation of the rotating part 10 directly drives the bidirectional screw 14 to rotate. The rotation of the bidirectional screw 14 directly drives the two threaded sleeves 15 to move towards or away from each other. When the two threaded sleeves 15 move, they directly cooperate with the connecting plate 16 to drive the clamping seat 17 to move. The mounting seat 13 is designed to facilitate the sliding installation of the clamping seat 17. The clamping seat 17 extends out and presses into the mounting groove 7, so that the mounting post 8 can be installed in the mounting sleeve 6.

[0037] The implementation principle of a low-NOx combustion system based on multi-point online monitoring in this application embodiment is as follows: In use, four monitoring mechanisms 3 are installed on the boiler 2. The setting of the monitoring mechanisms 3 facilitates real-time monitoring of the oxygen concentration in the boiler 2. Only when the oxygen concentration in the boiler 2 is within a certain range can the coal in the boiler 2 be fully combusted. The temperature sensor 5 monitors the flue gas in the flue pipe 4 in real time. When the coal is fully combusted, the temperature of the flue gas is within a certain range and is relatively high. Conversely, when the coal is not fully combusted, the temperature is relatively low. The electrical components in the monitoring box 1 are connected to the oxygen sensor 11 and the temperature sensor 5, so as to facilitate real-time analysis of the collected data and facilitate the full combustion of coal in the boiler 2. When the oxygen sensor 11 needs to be disassembled and maintained, the rotating part 10 is rotated to drive the bidirectional screw 14 to rotate. When the bidirectional screw 14 rotates, it directly drives the two threaded sleeves 15 to move towards or away from each other. When the two threaded sleeves 15 move away from each other, the clamping seat 17 is directly driven into the mounting seat 13 through the connecting plate 16. When the clamping seat 17 is not in contact with the mounting groove 7, the mounting column 8 can be directly pulled out.

[0038] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A low-NOx combustion system based on multi-point online monitoring, comprising a boiler (2), four monitoring devices (3) installed on the boiler (2), and a monitoring box (1), characterized in that: The four monitoring devices (3) are symmetrically installed on the outer wall of the boiler (2). All four monitoring devices (3) are electrically connected to the monitoring box (1). A flue (4) is fixedly connected to the top outer wall of the boiler (2), and an installation port is opened on the outer wall of the flue (4). A temperature sensor (5) is fixedly connected to the inner wall of the installation port, and the temperature sensor (5) is electrically connected to the monitoring box (1).

2. The low-NOx combustion system based on multi-point online monitoring according to claim 1, characterized in that: Two detection ports are opened on both sides of the outer wall of the boiler (2), and four monitoring mechanisms (3) are installed on the inner wall of the four detection ports respectively.

3. The low-NOx combustion system based on multi-point online monitoring according to claim 2, characterized in that: The monitoring mechanism (3) includes an installation sleeve (6) fixedly connected to the inner wall of the detection port, and an installation post (8) is inserted into the inner wall of the installation sleeve (6).

4. A low-NOx combustion system based on multi-point online monitoring according to claim 3, characterized in that: One end of the mounting column (8) is fixedly connected to an oxygen sensor (11), and the other end of the mounting column (8) is fixedly connected to a mounting base (9).

5. A low-NOx combustion system based on multi-point online monitoring according to claim 4, characterized in that: The inner wall of the mounting sleeve (6) has two symmetrically arranged mounting grooves (7), and the outer wall of the mounting column (8) is equipped with two mounting components (12) that match the mounting grooves (7).

6. A low-NOx combustion system based on multi-point online monitoring according to claim 5, characterized in that: The mounting assembly (12) includes a mounting base (13) fixedly connected to the mounting column (8), and the specifications of the mounting base (13) match the specifications of the mounting groove (7). An opening is provided on one side of the inner wall of the mounting base (13), and a clamping seat (17) is slidably connected to the inner wall of the opening. The clamping seat (17) has a T-shaped cross-section.

7. A low-NOx combustion system based on multi-point online monitoring according to claim 6, characterized in that: The inner walls of both sides of the mounting base (13) are rotatably connected to the same bidirectional screw (14), and the outer wall of the bidirectional screw (14) is screwed with two symmetrically arranged threaded sleeves (15). The outer walls of the two threaded sleeves (15) are rotatably connected to connecting plates (16), and one end of the two connecting plates (16) is rotatably connected to the clamping seat (17).

8. A low-NOx combustion system based on multi-point online monitoring according to claim 7, characterized in that: The outer wall of the fixed base (9) has two symmetrically opened circular grooves, and the inner walls of the two circular grooves are rotatably connected to rotating parts (10). One end of the drive shaft of the rotating part (10) is fixedly connected to the bidirectional screw (14).

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