Device for measuring carbon content in fly ash

Abstract

The utility model discloses a fly ash carbon content measuring device, and belongs to the technical field of fly ash carbon content measuring devices. The device mainly comprises a burning calibration device, a sampling device and an electrostatic measurement device, wherein the burning calibration device is connected with the sampling device through a pipeline. According to the fly ash carbon content measuring device, the sampling device sends an ash sample into the weightlessness burning measuring device, the collected ash sample is placed in a specified high-temperature environment to be burnt, the carbon content value of the fly ash sample is calculated by calculating weight loss signals weighed before burning and after burning, the sampling pipe can be adjusted, and the carbon content value of the fly ash sample can be measured. The sampling nozzle can directly face the smoke flow direction of a sampling point, sampling is more accurate, meanwhile, the sampling nozzle can adapt to the smoke flow directions of different sampling points, and universality is higher.

Description

Technical Field

[0001] The present application relates to the technical field of fly ash carbon content measuring devices, and specifically to a fly ash carbon content measuring device. Background Art

[0002] The carbon content of boiler fly ash is an important indicator reflecting the combustion efficiency of coal-fired boilers in thermal power plants. Real-time detection of the carbon content of fly ash will help guide the correct adjustment of the air-coal ratio during operation and improve the boiler combustion control level; reasonably controlling the index of the carbon content of fly ash is beneficial to reducing the power generation cost and improving the economy of unit operation.

[0003] Chinese Patent: CN201920323548.8 discloses an intelligent automatic calibration electrostatic fly ash carbon content measuring device. Aiming at the problems that the existing on-line monitoring devices for the carbon content of fly ash combustibles need to frequently extract fly ash samples from the flue gas duct, resulting in wear and blockage of the sampling pipeline, specifically, the carbon content of fly ash is measured by an electrostatic measuring device, the measurement period is short, and there is no maintenance required, and the measurement result of the electrostatic fly ash carbon content measuring device is calibrated regularly by a burning calibration device, so that the measurement accuracy can meet the existing requirements;

[0004] However, when the above-mentioned existing measurement device is actually used, it collects ash samples through a sampling device. However, for flue gas ducts in different directions, it cannot be adjusted according to the flue gas flow direction, resulting in limitations when the sampling device samples the flue gas of different flue gas ducts.

[0005] Therefore, it is necessary to provide a fly ash carbon content measuring device to solve the above problems.

[0006] It should be noted that the above information disclosed in this background art section is only used to understand the background art of the concept of the present application, and therefore, it may include information that does not constitute prior art. Summary of the Invention

[0007] Based on the above problems existing in the prior art, the problem to be solved by the present application is: to provide a fly ash carbon content measuring device, which solves the problem of limitations when the sampling device in the existing measurement device samples the flue gas of different flue gas ducts.

[0008] The technical solution adopted by the present application to solve its technical problems is: a fly ash carbon content measuring device, including a burning calibration device, a sampling device and an electrostatic measuring device;

[0009] The sampling device includes a mounting plate, a sampling pipe and a sampling nozzle provided on the sampling pipe. One end of the sampling pipe is connected to a cyclone separator, a diversion elbow is provided on the cyclone separator, one end of the diversion elbow is connected to an adjustment nozzle, and an ejector pipe is provided on one side of the adjustment nozzle;

[0010] A collar is fixedly provided on the outer side of the sampling pipe. A cylindrical pin is provided on the outer side of the collar. The collar is slidably connected to the mounting plate. Positioning holes are formed on the outer side of the mounting plate. A plurality of groups of positioning holes are formed along the axial direction of the collar. The positioning holes are adapted to the cylindrical pins. First and second nuts are provided on the outer side of the collar. The internal threads of the first and second nuts are opposite. The first and second nuts are threadedly connected to the collar.

[0011] Further, the burning calibration device and the sampling device are connected by a pipeline.

[0012] Further, one side of the mounting plate is connected with a separator support. The cyclone separator is installed at the lower end of the separator support.

[0013] Further, the electrostatic measurement device includes an electrostatic antenna and a signal processing device. The electrostatic antenna is electrically connected to the signal processing device.

[0014] Further, the burning calibration device includes a chassis. A weighing component, a burning component, a controller and an ash discharging component are provided inside the chassis. The ash discharging component is electrically connected to the weighing component, the burning component and the controller.

[0015] Further, the ash discharging component is connected to the flue through a pipeline.

[0016] Further, a support frame is provided below the box. The support frame is welded to one side of the flue.

[0017] Further, a connecting frame is provided at the upper end of the support frame. A rectangular flange is provided at the upper end of the connecting frame. The rectangular flange is connected to the mounting plate by bolts.

[0018] Further, the signal processing device includes an amplification circuit, an isolation circuit and a CPU processing circuit.

[0019] Further, the amplification circuit, the isolation circuit and the CPU processing circuit are electrically connected.

[0020] The beneficial effects of the present application are as follows: A fly ash carbon content measurement device provided by the present application sends the ash sample into the weight loss burning measurement device through the sampling device, places the collected ash sample in a specified high-temperature environment for burning, calculates the carbon content value of the fly ash sample by calculating the weight loss signals before and after burning, and can adjust the sampling pipe so that the sampling nozzle can face the sampling point flue gas flow direction, making the sampling more accurate, and at the same time can be used to adapt to different sampling point flue gas flow directions, with higher versatility.

[0021] In addition to the purposes, features, and advantages described above, the present application has other purposes, features, and advantages. The following will further describe the present application in detail with reference to the drawings. Brief Description of the Drawings

[0022] The accompanying drawings forming a part of this application are used to provide a further understanding of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation of the present application. In the drawings:

[0023] Figure 1 is an overall schematic diagram of a fly ash carbon content measuring device in the present application;

[0024] Figure 2 is a schematic diagram of the first state of the sampling device in the present application;

[0025] Figure 3 is a schematic diagram of the mounting plate in the present application;

[0026] Figure 4 is a schematic diagram of the second state of the sampling device in the present application;

[0027] Figure 5 is a schematic diagram of the structure of the support frame in the present application;

[0028] Figure 6 is Figure 1 a side view of;

[0029] Figure 7 is a schematic diagram of the burning calibration device in the present application;

[0030] Figure 8 is a schematic diagram of the electrostatic measurement device in the present application;

[0031] Figure 9 is a schematic diagram of the signal processing device in the present application;

[0032] Among them, the reference numerals in the drawings are as follows:

[0033] 1. Burning calibration device; 11. Chassis; 12. Weighing component; 13. Burning component; 14. Controller; 15. Ash discharging component; 2. Sampling device; 21. Sampling pipe; 211. Collar; 212. Cylindrical pin; 213. First nut; 214. Second nut; 22. Sampling nozzle; 23. Ejector pipe; 24. Adjusting nozzle; 25. Inducing elbow; 26. Mounting plate; 261. Positioning hole; 27. Cyclone separator; 28. Separator support; 3. Support frame; 31. Connecting frame; 32. Rectangular flange; 4. Electrostatic measurement device; 41. Electrostatic antenna; 42. Signal processing device; 421. Amplification circuit; 422. Isolation circuit; 423. CPU processing circuit; 5. Flue. Detailed Description of the Embodiments

[0034] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0035] In order to enable those skilled in the art to better understand the solution of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present application.

[0036] As Figures 1 to 9 shown, the present application provides a fly ash carbon content measuring device, including a burning calibration device 1, a sampling device 2 and an electrostatic measuring device 4. The burning calibration device 1 is connected to the sampling device 2 through a pipeline;

[0037] The sampling device 2 includes a mounting plate 26, a sampling pipe 21, a sampling nozzle 22, a cyclone separator 27, an induction elbow 25, an adjusting nozzle 24 and an injection pipe 23. The sampling nozzle 22 is located on the sampling pipe 21 and is provided with two groups at equal intervals along its length direction. The cyclone separator 27 is connected to one end of the sampling pipe 21. The cyclone separator 27 and the sampling pipe 21 are movably and hermetically connected. The induction elbow 25 is located at the upper end of the cyclone separator 27. The adjusting nozzle 24 is connected to one end of the induction elbow 25. The injection pipe 23 is located on one side of the induction elbow 25. A collar 211 is fixedly provided on the outer side of the sampling pipe 21. A cylindrical pin 212 is provided on the outer side of the collar 211. The collar 211 is slidably connected to the mounting plate 26. A through hole for the collar 211 to pass through is opened on the mounting plate 26. A positioning hole 261 is opened on the outer side of the mounting plate 26, and a plurality of groups of positioning holes 261 are opened at equal intervals along the axial direction of the through hole. The positioning hole 261 is adapted to the cylindrical pin 212. The outer side of the collar 211 is threadedly connected with a first nut 213 and a second nut 214, and the internal thread directions of the first nut 213 and the second nut 214 are opposite.

[0038] In this embodiment, during installation, first loosen the first nut 213, and then loosen the second nut 214 to separate the first nut 213 and the second nut 214 from the collar 211. Then pull the sampling tube 21 forward until the cylindrical pin 212 on the collar 211 separates from a set of positioning holes 261 on the mounting plate 26. Then rotate the sampling tube 21 according to the flow direction of the sampled flue gas so that the direction of the sampling nozzle 22 on the sampling tube 21 is directly facing the flow direction of the flue gas. Then insert the cylindrical pin 212 on the collar 211 into the corresponding positioning hole 261 inside the mounting plate 26. Then rotate the second nut 214 so that the second nut 214 abuts against the mounting plate 26, and rotate the first nut 213 so that the first nut 213 abuts against the second nut 214. Since the internal thread directions of the first nut 213 and the second nut 214 are opposite, the directions of the first nut 213 and the second nut 214 are different when they rotate to the outside of the collar 211. Therefore, the second nut 214 can be prevented from detaching from the collar 211 under the abutment of the first nut 213 and the second nut 214, thereby completing the direction adjustment of the sampling nozzle 22 so that it can adapt to the use of different sampled flue gas flow directions and has higher versatility.

[0039] As Figure 2 shown, a separator support 28 is connected to one side of the mounting plate 26, and a cyclone separator 27 is installed at the lower end of the separator support 28. The cyclone separator 27 is connected to the separator support 28 by bolts, and the separator support 28 is used to support the cyclone separator 27.

[0040] As Figures 8 to 9 shown, the electrostatic measurement device 4 includes an electrostatic antenna 41 and a signal processing device 42. The electrostatic antenna 41 is electrically connected to the signal processing device 42. The signal processing device 42 includes an amplification circuit 421, an isolation circuit 422, and a CPU processing circuit 423. The amplification circuit 421, the isolation circuit 422, and the CPU processing circuit 423 are electrically connected, preferably connected by a cable.

[0041] In this embodiment, one end of the electrostatic antenna 41 is inserted into the flue 5 to continuously obtain the characteristic electrical signal of the fly ash particles. The electrical signal is transmitted into the CPU processing circuit 423 through a cable. The CPU processing circuit 423 mainly includes an amplification circuit 421 and an isolation circuit 422. The processed electrical signal is transmitted to the CPU processing circuit 423, and at the same time, the CPU processing circuit 423 calculates the carbon content result.

[0042] As Figure 7As shown, the burning calibration device 1 includes a chassis 11, and a weighing component 12, a burning component 13, a controller 14, and an ash discharging component 15 inside the chassis 11. The ash discharging component 15 is connected to the flue 5 through a pipeline. The ash discharging component 15, the weighing component 12, the burning component 13, and the controller 14 are electrically connected. The controller 14 is used to control the operation of the weighing component 12, the burning component 13, and the controller 14.

[0043] In this embodiment, after sampling through the sampling device 2, the controller 14 controls the weighing component 12, the burning component 13, and the ash discharging component 15 to respectively complete actions such as drying, cooling, weighing, and ash discharging of the ash sample. By calculating the weight loss signals before and after burning, the carbon content in the ash sample is obtained.

[0044] As Figures 1 to 5 shown, a support frame 3 is provided below the chassis 11. The support frame 3 is welded to one side of the flue 5. A connecting frame 31 is provided at the upper end of the support frame 3. A rectangular flange 32 is provided on the connecting frame 31. The rectangular flange 32 is connected to the mounting plate 26 by bolts.

[0045] In this embodiment, after selecting a suitable position on the flue 5, the support frame 3 is welded to one side of the flue 5, and the chassis 11 is installed on the support frame 3. If a rain protection device needs to be added to the equipment, a waterproof awning can be welded to the top of the equipment. The minimum slope of the awning installation is 10 degrees, and a shock pad can also be added to the bottom of the chassis 11 to reduce the damage caused by vibration during equipment operation.

[0046] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A device for measuring carbon content in fly ash, characterized in that: It comprises a burning calibration device (1), a sampling device (2) and an electrostatic measuring device (4); The sampling device (2) comprises a mounting plate (26), a sampling tube (21) and a sampling nozzle (22) arranged on the sampling tube (21); one end of the sampling tube (21) is connected to a cyclone separator (27); a curved pipe (25) is arranged on the cyclone separator (27); one end of the curved pipe (25) is connected to an adjusting nozzle (24); one side of the adjusting nozzle (24) is provided with an ejector pipe (23); A collar (211) is fixedly provided on the outer side of the sampling tube (21), a cylindrical pin (212) is provided on the outer side of the collar (211), the collar (211) is slidably connected to a mounting plate (26), a positioning hole (261) is provided on the outer side of the mounting plate (26), a plurality of positioning holes (261) are provided along the axial direction of the collar (211), the positioning holes (261) are matched with the cylindrical pin (212), a first nut (213) and a second nut (214) are provided on the outer side of the collar (211), the first nut (213) and the second nut (214) have opposite internal threads, and the first nut (213) and the second nut (214) are threadedly connected to the collar (211).

2. A fly ash carbon content measuring device according to claim 1, characterized in that: The burning calibration device (1) is connected to the sampling device (2) via a pipeline.

3. A fly ash carbon content measuring device according to claim 2, characterized in that: A separator bracket (28) is connected to one side of the mounting plate (26), and the cyclone separator (27) is mounted on the lower end of the separator bracket (28).

4. A fly ash carbon content measuring device according to claim 3, characterized in that: The electrostatic measuring device (4) comprises an electrostatic antenna (41) and a signal processing device (42), and the electrostatic antenna (41) is electrically connected to the signal processing device (42).

5. A fly ash carbon content measuring device according to claim 4, characterized in that: The burning calibration device (1) comprises a chassis (11), wherein a weighing component (12), a burning component (13), a controller (14) and an ash removal component (15) are arranged inside the chassis (11), and the ash removal component (15), the weighing component (12), the burning component (13) and the controller (14) are electrically connected.

6. A fly ash carbon content measuring device according to claim 5, characterized in that: The ash discharge component (15) is connected to the flue (5) via a pipeline.

7. A fly ash carbon content measuring device according to claim 6, characterized in that: A support frame (3) is provided below the chassis (11), and the support frame (3) is welded to one side of the flue (5).

8. A fly ash carbon content measuring device according to claim 7, characterized in that: A connecting frame (31) is provided at the upper end of the supporting frame (3), a rectangular flange (32) is provided at the upper end of the connecting frame (31), and the rectangular flange (32) is connected to the mounting plate (26) by bolts.

9. A fly ash carbon content measuring device according to claim 8, characterized in that: The signal processing device (42) comprises an amplifying circuit (421), an isolating circuit (422) and a CPU processing circuit (423).

10. A fly ash carbon content measuring device according to claim 9, characterized in that: The amplifying circuit (421), the isolating circuit (422) and the CPU processing circuit (423) are electrically connected.

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