Boiler combustion optimization device

Abstract

The utility model discloses a boiler combustion optimizing device which comprises a vertical pipe, an air supplementing assembly is arranged at the lower end of the vertical pipe, and a water cooling pipe is wound on the vertical pipe. According to the utility model, the vertical pipe is arranged to be matched with the air supplement assembly, so that in the combustion process of the coal power unit boiler, once the air distribution is unreasonable due to the conditions of supply air oxygen content change, pulverized coal quality change and the like, the air distribution system can be directly controlled to increase the total air supply amount, and meanwhile, the air supplement assembly is used for supplementing air into the coal power unit boiler; in the pulverized coal combustion process, the air supplementing shell is matched with the air guide plate, the moving direction of the pulverized coal is changed, the pulverized coal is kept in the combustion state and moves upwards, then the situation that the pulverized coal makes contact with the water cooling wall under the condition that combustion is not sufficient is avoided, and therefore in the process that a user adjusts the air supply equipment, the combustion efficiency of the pulverized coal is improved. The combustion efficiency of the coal power unit boiler is ensured; and scaling on the water cooling wall is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to thermal power equipment technical field especially, relates to a device that boiler combustion optimizes. BACKGROUND

[0002] Coal power unit boiler, simply speaking is that fuel is heated, heating water, forms high temperature high pressure superheated steam, then steam along pipeline enters steam turbine and expands continuously and does work, impacts steam turbine rotor high speed rotation, drives generator rotor (electromagnetic field) rotation, stator coil cuts magnetic force line, sends out electric energy, again utilizes step-up transformer, rises to system voltage, with system parallel operation, sends electric energy to outside, finally cooled steam is further boosted by feed water pump and sent back to boiler to repeat the above-mentioned circulation process, coal-fired boiler is one of important equipment in the operation process of thermal power plant, and its combustion efficiency is directly related to the economy of power plant operation.

[0003] In the prior art, the fuel of the power plant boiler is also prone to unreasonable air distribution and insufficient total air volume during combustion, which causes the oxygen content of the boiler operation to fail to meet the actual requirements and standards. Utility Model Content

[0004] The utility model discloses a device that boiler combustion optimizes can be provided to solve the above-mentioned problems.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A device that boiler combustion optimizes, including vertical pipe, the lower extreme of vertical pipe is provided with the air supplementing subassembly, is wound with water cooling pipe on vertical pipe;

[0007] The air supplement assembly comprises a shunt pipe in communication with the lower end of the vertical pipe, a plurality of elbow pipes in communication with the lower end of the shunt pipe, an air vent shell fixedly connected to the end of the elbow pipe away from the shunt pipe, an air outlet formed in the end of the air vent shell, a shaft rod rotatably connected in the air outlet, a wind deflector fixedly connected to one side of the shaft rod, a shunt plate fixedly connected in the vertical pipe and fixedly connected to the lower end of the shunt pipe, a rotary air cylinder fixedly connected to the sidewall of the upper end of the vertical pipe and a rope shaft fixedly connected to the driving end of the rotary air cylinder, a pull rope wound on the rope shaft and sequentially arranged through the vertical pipe, the shunt pipe, the elbow pipe and the air vent shell, and the end of the pull rope away from the rope shaft is fixedly connected to the shaft rod, and a fan is further in communication with the upper end of the vertical pipe.

[0008] Preferably, a plurality of grooves are formed in the air vent shell close to the first side of the vertical pipe, and a black coating is arranged in the grooves, a plurality of heat-conducting plates are fixedly connected in the air vent shell, and a plurality of heat-conducting rods are fixedly connected to the heat-conducting plates.

[0009] Preferably, a guide pipe is fixedly connected in the elbow pipe, and the pull rope is arranged through the guide pipe.

[0010] Preferably, the water-cooling pipe is spiral-shaped, and the cross section of the water-cooling pipe is semicircular.

[0011] Preferably, the cross section of the elbow pipe is triangular, and a reinforcing rib is formed in the sidewall of the elbow pipe.

[0012] Preferably, the air vent shell is quadrangular frustum-shaped, the upper end of the air vent shell is bevelled, and an extension plate is fixedly connected to the side of the air vent shell close to the grooves.

[0013] Compared with the prior art, the air supplement assembly has the following beneficial effects:

[0014] The vertical pipe cooperates with the air supplement assembly, in the coal-fired boiler combustion process of the coal-fired unit, once the air distribution is unreasonable due to the change of oxygen content of the air supply, the change of the quality of the pulverized coal and the like, the total air supply can be directly controlled to be increased by the air distribution system, and the air supplement assembly is used for air supplementing in the coal-fired boiler of the coal-fired unit, in the combustion process of the pulverized coal, the air vent shell cooperates with the wind deflector to change the moving direction of the pulverized coal, so that the pulverized coal keeps in the combustion state and moves upward, thereby avoiding the pulverized coal from contacting the water-cooled wall under the condition of insufficient combustion, so that the combustion efficiency of the coal-fired boiler of the coal-fired unit is ensured and the scaling on the water-cooled wall is avoided in the process of adjusting the air supply equipment.

[0015] The utility model discloses, through set up water -cooling pipe, is used for reducing the temperature of vertical pipe, also improve the heat exchange area of heat and water in coal power unit boiler simultaneously to improve the heat exchange efficiency, can also improve the temperature of air when external air supply, through set up recess cooperation black coating, can improve the heat exchange area of ventilation shell, and utilize heat conducting plate further to heat the air through ventilation shell, avoid the coal powder of burning, appear the case of insufficient combustion after meeting cold air. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a kind of boiler combustion optimization's device's sectional structure schematic view that the utility model proposes;

[0017] Figure 2 It is a kind of boiler combustion optimization's device's partial structure schematic view that the utility model proposes;

[0018] Figure 3 It is a kind of boiler combustion optimization's device's ventilation shell internal structure schematic view that the utility model proposes;

[0019] Figure 4 It is a kind of boiler combustion optimization's device's ventilation shell sectional structure schematic view that the utility model proposes

[0020] Figure 5 It is Figure 3 Enlarged structure schematic view of A in middle;

[0021] In the drawing: 1, vertical pipe;2, water cooling pipe;3, elbow;4, ventilation shell;5, shaft;6, air deflector;7, splitter plate;8, rotary cylinder;9, pull rope;10, recess;11, heat conducting plate;12, extension plate. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be described clearly and completely in conjunction with the drawings of the embodiments of the utility model below, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0023] Refer to Figures 1-5 A kind of boiler combustion optimization's device, including vertical pipe 1, the lower end of the vertical pipe 1 is provided with air supplementing assembly, water cooling pipe 2 is wound on the vertical pipe 1, the water cooling pipe 2 is spiral, and the cross section of water cooling pipe 2 is semicircular, wherein water cooling pipe 2 is communicated with upper drum arrangement, the plane of water cooling pipe 2 is in contact with the side wall of vertical pipe 1, for ensuring the contact area of water cooling pipe 2 and vertical pipe 1, and arc surface is away from vertical pipe 1, utilize arc surface to expand the heat exchange area with hot air and heat radiation in boiler;

[0024] The air supplement assembly comprises a shunt pipe in communication with the lower end of the vertical pipe 1, a plurality of elbow pipes 3 in communication with the lower end of the shunt pipe, a ventilation shell 4 fixedly connected to the end of the elbow pipe 3 away from the shunt pipe, an air outlet formed in the end of the ventilation shell 4, a shaft rod 5 rotatably connected in the air outlet, a wind deflector 6 fixedly connected to one side of the shaft rod 5, a shunt plate 7 fixedly connected in the vertical pipe 1 and fixedly connected to the lower end of the shunt pipe, a rotary air cylinder 8 fixedly connected to the upper end side wall of the vertical pipe 1, a rope shaft fixedly connected to the driving end of the rotary air cylinder 8, a pull rope 9 wound on the rope shaft, the pull rope 9 sequentially passing through the vertical pipe 1, the shunt pipe, the elbow pipe 3 and the ventilation shell 4, and the end of the pull rope 9 away from the rope shaft being fixedly connected to the shaft rod 5, and the upper end of the vertical pipe 1 further communicating with a fan.

[0025] Further, a plurality of grooves 10 are formed in the first side of the ventilation shell 4 close to the vertical pipe 1, and a black coating is arranged in the grooves 10, a plurality of heat conducting plates 11 are fixedly connected in the ventilation shell 4, and a plurality of heat conducting rods are fixedly connected to the heat conducting plates 11, wherein the grooves 10 and the black coating are arranged to increase the heat exchange area and better absorb heat radiation by the black coating, so that the temperature of the ventilation shell 4 is increased, and the air supplement temperature of the air supplement assembly is increased by cooperating with the heat conducting plates 11, so as to avoid the influence of the combustion effect of the coal powder due to the cold.

[0026] The elbow pipe 3 is fixedly connected with a guide pipe, and the pull rope 9 passes through the guide pipe, and the guide pipe is arranged to limit the pull rope 9 and avoid the influence of the loose pull rope 9 on the control of the wind deflector 6.

[0027] Further, the cross section of the elbow pipe 3 is triangular, and the side wall of the elbow pipe 3 is provided with a reinforcing rib. Since the elbow pipe 3 is located below the burner, part of the coal cinder after combustion will fall on the elbow pipe 3. The triangular cross section of the elbow pipe 3 can avoid the accumulation of the coal cinder on the elbow pipe 3, and the reinforcing rib can improve the strength of the elbow pipe 3 and avoid the deformation of the elbow pipe 3 in the high-temperature environment.

[0028] Further, the ventilation shell 4 is in the shape of a quadrangular pyramid, and the upper end of the ventilation shell 4 is a slope. The side of the ventilation shell 4 close to the groove 10 is fixedly connected with an extension plate 12. This design can avoid the accumulation of the coal cinder on the upper surface of the ventilation shell 4 by the slope, and the extension plate 12 can block the falling coal cinder to avoid the adsorption of the coal cinder in the groove 10, so as to ensure the heat absorption effect of the ventilation shell 4.

[0029] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A device for optimizing boiler combustion, characterized in that: It comprises a vertical pipe (1), the lower end of the vertical pipe (1) is provided with an air supply component, and a water cooling pipe (2) is wound around the vertical pipe (1); The air supply component includes a diversion pipe connected to the lower end of the vertical pipe (1), the lower end of the diversion pipe is connected to a plurality of bends (3), the end of the bend (3) away from the diversion pipe is fixedly connected to a ventilation shell (4), the end of the ventilation shell (4) is provided with an air outlet, and a shaft (5) is rotatably connected in the air outlet, one side of the shaft (5) is fixedly connected to an air guide plate (6), a diversion plate (7) is fixedly connected in the vertical pipe (1), and the lower end of the diversion plate (7) is fixedly connected to the diversion pipe, the upper end side wall of the vertical pipe (1) is fixedly connected to a rotating cylinder (8), and the driving end of the rotating cylinder (8) is fixedly connected to a rope shaft, a pull rope (9) is wound around the rope shaft, the pull rope (9) is sequentially passed through the vertical pipe (1), the diversion pipe, the bend (3) and the ventilation shell (4), and the end of the pull rope (9) away from the rope shaft is fixedly connected to the shaft rod (5), and the upper end of the vertical pipe (1) is also connected to a fan.

2. The boiler combustion optimization device according to claim 1, characterized in that: The ventilation shell (4) is provided with a plurality of grooves (10) on a first side close to the vertical pipe (1), and a black coating is provided in the grooves (10). The ventilation shell (4) is fixedly connected with a plurality of heat conducting plates (11), and a plurality of heat conducting rods are fixedly connected to the heat conducting plates (11).

3. The boiler combustion optimization device according to claim 1, characterized in that: A guide tube is fixedly connected inside the curved tube (3), and the pull rope (9) is arranged to pass through the guide tube.

4. The boiler combustion optimization device according to claim 1, characterized in that: The water cooling pipe (2) is spiral-shaped, and the cross section of the water cooling pipe (2) is semicircular.

5. The boiler combustion optimization device according to claim 1, characterized in that: The cross section of the curved pipe (3) is triangular, and the side wall of the curved pipe (3) is provided with reinforcing ribs.

6. The boiler combustion optimization device according to claim 2, characterized in that: The ventilation shell (4) is in the shape of a quadrangular pyramid, and the upper end of the ventilation shell (4) is an inclined surface. An extension plate (12) is fixedly connected to one side of the ventilation shell (4) close to the groove (10).

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