CN216459381U

CN216459381U - Novel online pulverized coal control system of coal mill

Info

Publication number: CN216459381U
Application number: CN202122039369.1U
Authority: CN
Inventors: 蔡琦龙; 赵海晓; 王欢; 沙千里; 黄广; 于兴宝
Original assignee: Zhejiang Datang International Wushashan Power Generation Co ltd; Thermal Power Generation Technology Research Institute of China Datang Corporation Science and Technology Research Institute Co Ltd
Current assignee: Zhejiang Datang International Wushashan Power Generation Co ltd; Thermal Power Generation Technology Research Institute of China Datang Corporation Science and Technology Research Institute Co Ltd
Priority date: 2021-08-27
Filing date: 2021-08-27
Publication date: 2022-05-10
Anticipated expiration: 2031-08-27

Abstract

The utility model discloses an online pulverized coal control system of a novel coal mill, which comprises a coal mill body, wherein a pulverized coal separating mechanism is arranged outside the coal mill body; buggy separating mechanism turns to the room including installing the outside buggy mixture at coal pulverizer body, and the coal pulverizer body is close to the buggy mixture and turns to one side of room and has seted up the export, and the buggy mixes the internally mounted who turns to the room has the siphunculus, and the buggy mixes the internally mounted who turns to the room and has a plurality of pre-distribution baffles, and the buggy mixes the internally mounted who turns to the room and has a plurality of guide plates, and the buggy mixes the externally mounted who turns to the room and has a plurality of buggy pipes. The utility model can fully mix the entering coal dust by matching the pre-distribution baffle plate and the flow guide plate, thereby preventing the condition that the combustion in the boiler is influenced by the fineness of the coal dust and the deviation of the quantity of the coal dust, reducing the deviation of flame in the boiler, the deviation of air temperature and the like, improving the working efficiency of the coal dust machine, and simultaneously improving the utilization rate of the energy of the coal dust.

Description

Novel online pulverized coal control system of coal mill

Technical Field

The utility model relates to the technical field of coal mills, in particular to a novel online pulverized coal control system of a coal mill.

Background

Coal mills are machines that break up coal briquettes and grind them into coal fines, and are important auxiliary equipment for coal powder furnaces. The coal grinding process is a process in which coal is crushed and its surface area is increased continuously. To increase the new surface area, the binding force between solid molecules must be overcome, and thus energy is consumed. The coal is ground into coal powder in the coal mill, and the coal powder is mainly adjusted by a static separator system when being added.

The existing coal mill static separator system is difficult to adjust the fineness and the quantity of pulverized coal entering a pulverized coal pipe, so that the pulverized coal fineness and the pulverized coal quantity deviation of each pulverized coal pipe are caused, the combustion condition in a furnace is further influenced, and the consequences such as boiler flame deviation and temperature deviation are caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems that the work of a coal mill is influenced, the consequences of boiler flame deviation, temperature deviation and the like are easily caused, and potential safety hazards exist due to the fact that the fineness and the amount of coal powder entering a coal powder pipe are difficult to adjust in the prior art, and the novel online coal powder control system of the coal mill is provided.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the novel coal mill online pulverized coal control system comprises a coal mill body, wherein a pulverized coal separating mechanism is arranged outside the coal mill body;

buggy separating mechanism turns to the room including installing the outside buggy mixture of coal pulverizer body, the coal pulverizer body is close to the buggy mixture and turns to one side of room and has seted up the export, the buggy mixture turns to the internally mounted of room has the siphunculus, the buggy mixture turns to the internally mounted of room and has a plurality of pre-distribution baffles, the buggy mixture turns to the internally mounted of room and has a plurality of guide plates, the buggy mixture turns to the externally mounted of room and has a plurality of buggy pipes, the buggy mixture turns to the room and has seted up the entry near one side of buggy pipe, the inside sliding connection of buggy pipe has electronic picture peg door, the outside that the buggy mixture turned to the room is provided with and is used for carrying out the control mechanism controlled buggy volume and wind speed.

The above technical solution further comprises:

preferably, the size of the coal mill body is larger than that of the pulverized coal mixing and turning chamber, and the size of the outlet is matched with that of the pulverized coal mixing and turning chamber.

Preferably, the through pipe penetrates from the outside of the pulverized coal mixing and turning chamber to the inside of the coal mill body, and the pre-distribution baffle is located above the flow guide plate.

Preferably, the control mechanism comprises a digital anemometer arranged in the pulverized coal pipe, and motors are arranged outside the pre-distribution baffle, the guide plate and the electric plugboard door.

Preferably, a control cabinet is installed outside the coal mill body, and the digital anemoscope and the motor are connected with the control cabinet through connecting wires.

Compared with the prior art, the utility model has the beneficial effects that:

1. the coal dust powder mixer can fully mix the entering coal dust through the matching use of the pre-distribution baffle and the flow guide plate, prevents the condition that the combustion in the boiler is influenced by the fineness of the coal dust and the quantity deviation of the coal dust, reduces the flame deviation, the temperature deviation and the like in the boiler, improves the working efficiency of the coal dust machine, and simultaneously improves the energy utilization rate of the coal dust.

2. According to the utility model, the coal powder pipe, the electric control spile door and the control mechanism are matched for use, so that the coal powder feeding amount can be remotely adjusted, the adjusting difficulty is reduced, the coal powder amount distributed by each coal powder pipe can be directly adjusted, and meanwhile, the safety of coal powder amount adjustment is also improved.

Drawings

Fig. 1 is a schematic circuit structure diagram of an on-line pulverized coal control system of a novel coal mill provided by the utility model;

FIG. 2 is a schematic perspective view of a coal pulverizer provided by the present invention;

FIG. 3 is a cross-sectional view of a coal pulverizer as contemplated by the present invention;

FIG. 4 is a schematic view of the internal structure of the coal pulverizer of the present invention

In the figure: 1. a coal mill body; 2. a pulverized coal mixing steering chamber; 3. an outlet; 4. pipe passing; 5. a pre-distribution baffle; 6. a baffle; 7. a pulverized coal pipe; 8. an inlet; 9. an electrically-powered gate; 10. a digital anemometer; 11. a motor; 12. a control cabinet.

Detailed Description

The technical solution of the present invention is further explained with reference to the accompanying drawings and specific embodiments.

Example one

As shown in fig. 2-4, the on-line pulverized coal control system of the novel coal mill provided by the utility model comprises a coal mill body 1, wherein a pulverized coal separation mechanism is arranged outside the coal mill body 1;

buggy separating mechanism turns to room 2 including installing the buggy mixture in coal pulverizer body 1 outside, coal pulverizer body 1 is close to the buggy mixture and turns to one side of room 2 and has seted up export 3, the buggy mixture turns to the internally mounted of room 2 has siphunculus 4, the internally mounted that the buggy mixes to turn to room 2 has a plurality of pre-distribution baffles 5, the buggy mixture turns to the internally mounted of room 2 has a plurality of guide plates 6, the buggy mixture turns to the externally mounted of room 2 has a plurality of buggy pipes 7, the buggy mixes to turn to one side that room 2 is close to buggy pipe 7 and has seted up entry 8, the inside sliding connection of buggy pipe 7 has electronic picture peg door 9, the outside that the buggy mixes to turn to room 2 is provided with and is used for carrying out the control mechanism controlled buggy volume and wind speed.

When the novel coal mill online pulverized coal control system works, pulverized coal is ground and enters the interior of a pulverized coal mixing and steering chamber 2 through an outlet 3 outside a coal mill body 1, and a plurality of pre-distribution baffles 5 and flow guide plates 6 are arranged in the pulverized coal mixing and steering chamber 2, so that when pulverized coal passes through the flow guide plates 6, the tangential speed of pulverized coal airflow is enhanced under the action of the flow guide plates 6, meanwhile, the turbulence intensity of the pulverized coal airflow is increased, the pulverized coal is mixed more sufficiently, and the pulverized coal is regulated by the pre-distribution baffles 5 and distributed to each pulverized coal pipe 7 according to needs;

because the electric spile door 9 is connected inside the pulverized coal pipe 7 in a sliding manner, the flow area of each pulverized coal pipe 7 is adjusted before pulverized coal enters the pulverized coal pipe 7 under the action of the electric spile door 9, so that the pressure of the pulverized coal pipe 7 is changed, the condition that the pulverized coal fineness and pulverized coal quantity deviation influence the combustion in a boiler is prevented, the flame deviation, air temperature deviation and the like in the boiler are reduced, the working efficiency of the pulverized coal machine is improved, and meanwhile, the utilization rate of the energy of the pulverized coal is also improved.

Example two

As shown in fig. 1 and 3, based on the first embodiment, the size of the coal mill body 1 is larger than that of the pulverized coal mixing and turning chamber 2, the size of the outlet 3 is matched with that of the pulverized coal mixing and turning chamber 2, the through pipe 4 penetrates from the outside of the pulverized coal mixing and turning chamber 2 to the inside of the coal mill body 1, the pre-distribution baffle 5 is positioned above the flow guide plate 6,

the control mechanism comprises a digital anemoscope 10 installed inside a pulverized coal pipe 7, the pulverized coal amount and the wind speed inside the pulverized coal pipe 7 are measured, motors 11 are installed outside a pre-distribution baffle 5, a guide plate 6 and an electric plugboard door 9, a control cabinet 12 is installed outside the coal mill body 1, and the digital anemoscope 10 and the motors 11 are connected with the control cabinet 12 through connecting wires.

In the embodiment, during operation, the wind speed inside the pulverized coal pipes 7 is measured through the digital anemoscope 10, and the pre-distribution of pulverized coal is matched, because the guide plate 6, the pre-distribution baffle plate 5 and the electric spile door 9 are all connected with the motor 11, and signals are connected with the control cabinet 12 through connecting wires, so that the on-line control and adjustment of operation technicians are controlled conveniently, the pulverized coal fineness and the pulverized coal amount distributed by each pulverized coal pipe 7 are directly adjusted through the pulverized coal amount inside each pulverized coal pipe 7 and the wind speed, the adjustment difficulty is reduced, and meanwhile, the safety of pulverized coal amount adjustment is improved.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The novel online pulverized coal control system of the coal mill comprises a coal mill body (1), and is characterized in that a pulverized coal separating mechanism is arranged outside the coal mill body (1);

the coal dust separating mechanism comprises a coal dust mixing steering chamber (2) arranged outside the coal mill body (1), an outlet (3) is arranged on one side of the coal mill body (1) close to the pulverized coal mixing steering chamber (2), a through pipe (4) is arranged inside the pulverized coal mixing and steering chamber (2), a plurality of pre-distribution baffles (5) are arranged inside the pulverized coal mixing and steering chamber (2), a plurality of guide plates (6) are arranged in the pulverized coal mixing and turning chamber (2), a plurality of pulverized coal pipes (7) are arranged outside the pulverized coal mixing and turning chamber (2), an inlet (8) is arranged on one side of the pulverized coal mixing steering chamber (2) close to the pulverized coal pipe (7), the interior of the pulverized coal pipe (7) is connected with an electric inserting plate door (9) in a sliding way, and a control mechanism for controlling the coal dust quantity and the wind speed is arranged outside the coal dust mixing and steering chamber (2).

2. The on-line pulverized coal control system of the novel coal mill as claimed in claim 1, characterized in that the size of the coal mill body (1) is larger than that of the pulverized coal mixing and steering chamber (2), and the size of the outlet (3) is matched with that of the pulverized coal mixing and steering chamber (2).

3. The on-line pulverized coal control system of the novel coal mill as claimed in claim 1, wherein the through pipe (4) penetrates from the outside of the pulverized coal mixing and steering chamber (2) to the inside of the coal mill body (1), and the pre-distribution baffle (5) is located above the flow guide plate (6).

4. The novel coal pulverizer online pulverized coal control system according to claim 1, wherein the control mechanism comprises a digital anemometer (10) installed inside a pulverized coal pipe (7), and motors (11) are installed outside the pre-distribution baffle (5), the guide plate (6) and the electric plugboard door (9).

5. The novel coal mill online pulverized coal control system is characterized in that a control cabinet (12) is mounted outside the coal mill body (1), and the digital anemometer (10) and the motor (11) are connected with the control cabinet (12) through connecting wires.