An adjustable pulverized coal controller

Abstract

The present invention discloses an adjustable pulverized coal controller, comprising a pulverized coal controller body and a center tube, wherein the lower end of the center tube is inserted into the pulverized coal controller body from the top of the pulverized coal controller body, a plurality of pulverized coal outlets are arranged on the top of the pulverized coal controller body, wherein each pulverized coal outlet is provided with an outlet baffle, and a plurality of pulverized coal inlets are arranged on the side of the pulverized coal controller body. The controller can meet the needs of frequent deep peak regulation of thermal power units and realize the regulation of the pulverized coal amount in the pulverized coal pipeline.

Description

Technical Field

[0001] The invention belongs to the field of thermal power generation and relates to an adjustable pulverized coal controller. Background Art

[0002] The proportion of clean energy in my country continues to increase. As the proportion of clean energy increases, the operation mode of thermal power units has undergone major changes. Thermal power units have changed from the previous basic load operation mode to the deep peak-shaving operation mode for new clean energy peak-shaving. Due to the randomness of new energy, the load changes frequently, and thermal power units need to frequently perform deep peak-shaving. The amount of fuel in the boiler changes, and the amount of pulverized coal in each pulverized coal pipeline of the pulverizer will be uneven. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide an adjustable pulverized coal controller which can meet the needs of frequent deep peak regulation of thermal power units and realize the regulation of the pulverized coal amount in the pulverized coal pipeline.

[0004] To achieve the above-mentioned purpose, the adjustable coal powder controller described in the present invention includes a coal powder controller body and a center tube, wherein the lower end of the center tube is inserted into the coal powder controller body from the top of the coal powder controller body, and a plurality of coal powder outlets are arranged at the top of the coal powder controller body, wherein each coal powder outlet is provided with an outlet baffle, and a plurality of coal powder inlets are arranged on the side of the coal powder controller body.

[0005] The pulverized coal outlets are distributed in sequence along the circumferential direction.

[0006] The coal powder outlets are located around the central tube.

[0007] The coal powder inlets are distributed in sequence along the circumferential direction.

[0008] Each pulverized coal inlet is connected to a pulverized coal inlet pipe.

[0009] An air lock is arranged at the bottom outlet of the pulverized coal controller body.

[0010] When the outlet damper is closed, the amount of pulverized coal delivered by the center tube is controlled by adjusting the depth of the center tube extending into the inside of the pulverized coal controller body.

[0011] When the outlet baffle is opened, the coal powder is discharged directly through the center tube and each coal powder outlet.

[0012] The present invention has the following beneficial effects:

[0013] During specific operation of the adjustable pulverized coal controller described in the present invention, when the thermal power unit performs deep peak regulation, the amount of pulverized coal in each pulverized coal pipeline needs to be adjusted, the outlet baffle is closed, and the insertion depth of the center tube is adjusted to adjust the amount of pulverized coal in the pulverized coal pipeline. When the insertion depth of the center tube becomes deeper, the amount of pulverized coal passing through becomes less, and when the insertion depth of the center tube becomes shallower, the amount of pulverized coal passing through becomes more. By adjusting the insertion depth of the center tube, the amount of pulverized coal passing through each pulverized coal pipeline is made uniform, so that the boiler can achieve the best combustion mode, thereby improving the combustion safety and economy of the unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention;

[0015] Figure 2 It is a top view of the structure of the present invention.

[0016] Among them, 1 is the pulverized coal controller body, 2 is the center tube, 3 is the outlet baffle, 4 is the pulverized coal inlet pipe, and 5 is the air lock. DETAILED DESCRIPTION

[0017] The present invention is further described in detail below in conjunction with the accompanying drawings:

[0018] refer to Figure 1 and Figure 2 The adjustable pulverized coal controller of the present invention comprises a pulverized coal controller body 1 and a center tube 2, wherein the lower end of the center tube 2 is inserted into the pulverized coal controller body 1 from the top of the pulverized coal controller body 1, and a plurality of pulverized coal outlets are arranged on the top of the pulverized coal controller body 1, wherein each pulverized coal outlet is provided with an outlet baffle 3, and a plurality of pulverized coal inlets are arranged on the side of the pulverized coal controller body 1.

[0019] Furthermore, the pulverized coal outlets are distributed in sequence along the circumferential direction, and the pulverized coal outlets are located around the central tube 2, so that the pulverized coal is discharged evenly.

[0020] Furthermore, the coal powder inlets are distributed in sequence along the circumferential direction.

[0021] Furthermore, each pulverized coal inlet is connected to a pulverized coal inlet pipe 4 .

[0022] Furthermore, an air lock 5 is provided at the bottom outlet of the pulverized coal controller body 1. When the pulverized coal controller is working, that is, when each outlet baffle 3 is closed, the air lock 5 works to achieve the functions of locking air and discharging pulverized coal through induction or gravity.

[0023] The specific working process of the present invention is:

[0024] Coal powder enters the coal powder controller body 1 from the coal powder inlet pipe 4. When the outlet baffle 3 is closed, the amount of coal powder passing through the coal powder controller body 1 can be controlled by adjusting the insertion depth of the center tube 2. The deeper the insertion depth of the center tube 2, the less coal powder passes through, and the shallower the insertion depth of the center tube 2, the more coal powder passes through.

[0025] When the outlet damper 3 is opened, the central tube 2 has no separation function, and the coal powder is directly sent out from the coal powder controller body 1.

[0026] Practice has shown that after installing the present invention, the powder amount in the pulverized coal pipeline can be quickly adjusted to make the powder amount in each pulverized coal pipe of the pulverizer uniform, so that the boiler can achieve the best combustion mode, improve the combustion safety and economy of the unit, and meet the needs of deep peak regulation of thermal power units.

Claims

1. An adjustable pulverized coal controller, characterized in that: The invention comprises a pulverized coal controller body (1) and a central tube (2), wherein the lower end of the central tube (2) is inserted into the pulverized coal controller body (1) from the top of the pulverized coal controller body (1), a plurality of pulverized coal outlets are arranged at the top of the pulverized coal controller body (1), wherein each pulverized coal outlet is provided with an outlet baffle (3), a plurality of pulverized coal inlets are arranged on the side of the pulverized coal controller body (1), and an air lock (5) is arranged at the bottom outlet of the pulverized coal controller body (1); When the outlet damper (3) is closed, the depth of the central tube (2) extending into the interior of the coal powder controller body (1) is adjusted to control the amount of coal powder delivered by the central tube (2); When the outlet damper (3) is opened, the coal powder is directly discharged through the central tube (2) and each coal powder outlet.

2. The adjustable pulverized coal controller according to claim 1, characterized in that: The pulverized coal outlets are distributed in sequence along the circumferential direction.

3. The adjustable pulverized coal controller according to claim 1, characterized in that: The coal powder outlets are located around the central tube (2).

4. The adjustable pulverized coal controller according to claim 1, characterized in that: The coal powder inlets are distributed in sequence along the circumferential direction.

5. The adjustable pulverized coal controller according to claim 1, characterized in that: Each pulverized coal inlet is connected to a pulverized coal inlet pipe (4).

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