一种火电厂大流量无尘氨逃逸激光检测装置
By designing a high-flow-rate, dust-free laser detection device for ammonia escape in thermal power plants, the problems of unreasonable equipment layout and dust blockage were solved, enabling accurate measurement of ammonia escape and stable operation of the equipment, thereby improving denitrification efficiency and the economic benefits of the power plant.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUANENG ANYUAN POWER GENERATION CO LTD
- Filing Date
- 2025-06-13
- Publication Date
- 2026-07-17
AI Technical Summary
Existing ammonia slip analysis equipment for thermal power plants suffers from problems such as unreasonable equipment layout, easy blockage of sampling pipelines, untimely sampling, high levels of flue gas dust, and easy reaction at low temperatures. Furthermore, foreign equipment is expensive, has long delivery cycles, and lacks timely after-sales service.
A high-flow-rate, dust-free ammonia escape laser detection device for thermal power plants was designed, including a dust removal component and a laser detector. The dust removal component removes dust, and the laser detector measures ammonia gas, ensuring the accuracy of the measurement and the stability of the equipment.
It achieves accurate and stable measurement of low-concentration ammonia escape, improves the operating efficiency of denitrification units, reduces ammonia consumption and operating costs, reduces environmental pollution, meets environmental protection requirements, and helps power plants achieve green development.
Smart Images
Figure CN224518255U_ABST
Abstract
Claims
1. A large flow dust-free ammonia escape laser detection device for a thermal power plant, characterized in that: include, At least two primary circulation channels (1); The second flow channel (2) is vertically connected to the first flow channel (1); The dust removal assembly (3) includes a pressing member (31), an adjusting member (32), and a striking member (33). The pressing member (31) is installed on the first flow pipe (1) and can move up and down along the pipe. The adjusting member (32) is installed on the second flow pipe (2) and moves with the pressing member (31) up and down. The striking member (33) is connected to the pressing member (31) and strikes the outer surface of the second flow pipe (2) by the movement of the adjusting member (32) to remove the attached dust. Ammonia gas flows into the second flow pipe (2) through the first flow pipe (1) for subsequent ammonia gas measurement. The dust carried by the ammonia gas adheres to the second flow pipe (2). The dust removal component (3) knocks off the dust adhering to the pipes in the first flow pipe (1) and the second flow pipe (2) to prevent the dust carried by the ammonia gas from forming scale and clogging the pipes.
2. The device according to claim 1, characterized in that: The first flow channel (1) has three equidistant and vertically installed on the second flow channel (2), and the diameter of the second flow channel (2) is larger than that of the first flow channel (1).
3. The device according to claim 2, characterized in that: The pressing component (31) includes a sliding block (311) slidably connected to the first flow channel (1), a follower rod (312) fixedly connected to one side of the sliding block (311), a receiving shell (313) fixedly connected to the second flow channel (2), a pressing block (314) movably connected to the upper side of the receiving shell (313), and the upper side of the pressing block (314) fixedly connected to the follower rod (312).
4. The device according to claim 3, characterized in that: The adjusting component (32) includes a spring telescopic rod (321) fixedly connected between the pressing block (314) and the receiving shell (313). A plurality of adjusting blocks (322) are fixedly connected at equal intervals on the spring telescopic rod (321), and an adjusting surface (323) is provided on one side of the adjusting block (322).
5. The device according to claim 4, characterized in that: The striking component (33) includes fixed shafts (331) fixed at the four corners of the housing (313), a rotating groove (332) is opened on the fixed shaft (331), a tension spring (333) is fixedly connected to one side of the rotating groove (332), a striking block (334) is fixedly connected to one side of the tension spring (333), and a control block (335) is fixedly connected to one side of the striking block (334).
6. The device for detecting ammonia escape of large flow rate without dust in a thermal power plant according to any one of claims 3 to 5, characterized in that: A sampler (4) is connected to one side of the first flow pipe (1), and the second flow pipe (2) is connected to the bag filter (5). An economizer (6) is connected to one side of the bag filter (5), and a laser detector (7) is connected to the other side of the bag filter (5). Ammonia enters the bag filter (5) through the second flow pipe (2) for dust filtration. Then, the ammonia after dust removal is detected and analyzed by the laser detector (7). The amount of ammonia injected is controlled by the feedback of real-time ammonia measurement data, thereby improving the denitrification operation efficiency.
7. The device according to claim 6, characterized in that: The sampler (4) includes a cylinder (41) fixedly connected to the sampler (4), a drive shaft (42) connected to the cylinder (41), one side of the drive shaft (42) fixedly connected to the lower slider (311), and a sampling control valve (43) installed on the first flow pipe (1).
8. The high-flow-rate dust-free ammonia escape laser detection device for thermal power plants according to claim 7, characterized in that: The bag filter (5) includes an air compression pipe (51) and a fan pipe (52) connected to one side of the bag filter (5), and an outlet detection pipe (53) connected to the fan pipe (52).
9. The device according to claim 8, characterized in that: The bag filter (5) also includes a dust collection pipe (54) connected to the other side of the bag filter (5), and a pneumatic ash discharge valve (55) and a manual valve (56) are installed on the dust collection pipe (54).
10. The device according to claim 9, wherein the device is a device for detecting ammonia escape from a large flow of flue gas in a thermal power plant. A temperature pipe (57) connects the bag filter (5) and the dust collection pipe (54), a temperature regulating valve (58) is installed on the temperature pipe (57), and an inlet detection pipe (59) is connected to one side of the second flow pipe (2).