CN219607061U - Arrangement structure of tower boiler burner - Google Patents

Abstract

The utility model discloses an arrangement structure of tower boiler burners, which comprises the burners on a tower boiler and coal mills correspondingly connected with the burners, wherein the width-to-depth ratio of a hearth of the tower boiler is 1.1-1.3, the tower boiler is divided into a front wall and a rear wall, six layers of distribution areas are respectively arranged on the front wall and the rear wall, each layer of distribution area is provided with four burners, and the burners on the front wall and the rear wall are arranged in opposite impact. According to the utility model, six layers of distribution areas are arranged on the front wall and the rear wall of the tower type boiler, four burners are arranged in each layer of distribution area, the front wall and the rear wall are arranged in a hedging manner, and eight burners are correspondingly connected through the coal mill, so that the application of a hedging combustion mode in the tower type boiler in the 1000 MW-level ultra-supercritical unit boiler is realized.

Description

Arrangement structure of tower boiler burner

Technical Field

The utility model belongs to the technical field of power station boilers, and particularly relates to an arrangement structure of a tower type boiler burner.

Background

The existing 1000 MW-level boiler combustion mode mainly comprises tangential combustion and opposite combustion modes. Compared with tangential firing, the opposed firing furnace has better flame fullness, smaller thermal deviation, better self-stabilizing ability of a single burner and better low-load stable firing.

In the existing 1000 MW-level ultra-supercritical unit boiler, the opposite-firing mode is only applied to pi-type furnaces. Taking a conventional 1000MW grade pi-type opposite-impact furnace as an example, the burners are generally arranged by adopting front and rear walls, wherein the front and rear walls are respectively provided with three layers (corresponding to 6 coal mills), 8 burners are arranged on each layer, 48 burners are arranged on the whole, but the furnace chamber width of the pi-type furnace is larger than that of a 1000MW grade tower boiler, so that the arrangement of the burners according to the pi-type furnace is not satisfied with the equivalent tower boiler.

Disclosure of Invention

In order to solve the problems, the utility model provides an arrangement structure of tower boiler burners, which solves the problem that no opposite-flow burner is suitable for a 1000MW grade tower boiler in the prior art.

The embodiment of the utility model is realized by the following technical scheme:

the utility model provides a tower boiler combustor's arrangement structure, includes the combustor that is located tower boiler and the coal pulverizer that corresponds to be connected with the combustor, tower boiler's furnace aspect ratio is 1.1 ~ 1.3, and this tower boiler divide into front wall and back wall, and front wall and back wall respectively are equipped with six layers of distribution district, and every layer of distribution district is equipped with four combustors.

In an embodiment of the utility model, the burners on the front and rear walls are arranged in opposite directions.

In one embodiment of the utility model, the tower boiler is provided with six coal mills, and each coal mill is correspondingly connected with eight burners.

In an embodiment of the utility model, the coal mill is provided with four coal powder outlet pipelines, each coal powder outlet pipeline is connected with a coal powder equalizer, each coal powder equalizer is also provided with two coal powder inlet pipelines, and each coal powder inlet pipeline is correspondingly connected with a burner.

In an embodiment of the utility model, the coal mill is correspondingly connected with the burners of the upper and lower adjacent layers of the front wall or the rear wall.

In one embodiment of the utility model, the coal mill is correspondingly connected with the burners of the corresponding layers of the front wall and the rear wall.

In an embodiment of the present utility model, the front wall and the rear wall are respectively provided with four layers of distribution areas, and each layer of distribution area is provided with six burners.

In an embodiment of the present utility model, the four distribution areas of the front wall are respectively set as a first distribution area, a second distribution area, a third distribution area and a fourth distribution area from top to bottom, where six burners of the first distribution area and two burners in the middle of the second distribution area are correspondingly connected to a coal mill, six burners of the fourth distribution area and two burners in the middle of the third distribution area are correspondingly connected to a coal mill, and finally the burners on both sides of the second distribution area and the third distribution area are correspondingly connected to a coal mill.

In an embodiment of the present utility model, the four distribution areas of the rear wall are respectively set as a first distribution area, a second distribution area, a third distribution area and a fourth distribution area from top to bottom, wherein six burners of the first distribution area and two burners in the middle of the second distribution area are correspondingly connected with a coal mill, two burners of the fourth distribution area and two burners in the middle of the third distribution area are correspondingly connected with a coal mill, and finally the burners on both sides of the second distribution area and the third distribution area are correspondingly connected with a coal mill.

The technical scheme of the embodiment of the utility model has at least the following advantages and beneficial effects:

according to the embodiment of the utility model, six layers of distribution areas are arranged on the front wall and the rear wall of the tower type boiler, four burners are arranged in each layer of distribution area, the front wall and the rear wall are arranged in a hedging manner, and eight burners are correspondingly connected through the coal mill, so that the application of a hedging combustion mode in the tower type boiler in the 1000 MW-level ultra-supercritical unit type boiler is realized.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of embodiment 1 and embodiment 2 of the present utility model;

FIG. 2 is a schematic view of the connection of the front wall coal mill to the burner in example 1;

FIG. 3 is a schematic view of the connection of the coal mill and the burner of the back wall of example 1;

FIG. 4 is a schematic view of the connection of the front wall coal mill to the burner in example 2;

FIG. 5 is a schematic view of the connection of the coal mill and the burner of the back wall of example 2;

FIG. 6 is a schematic structural diagram of embodiment 3 of the present utility model;

FIG. 7 is a schematic view of the connection of the front wall coal mill to the burner in example 3;

FIG. 8 is a schematic view of the connection of the rear wall coal mill to the burner in example 3.

Icon: 1-burner, 2-front wall, 3-back wall, 4-coal powder inlet pipeline, 5-coal powder equipartition device, 6-coal powder outlet pipeline and 7-coal mill.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, if the azimuth or positional relationship indicated by the terms "inner", "outer", etc. appears to be based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship that the inventive product is conventionally put in use, it is merely for convenience of describing the present utility model and simplifying the description, and it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and therefore should not be construed as limiting the present utility model.

In the description of the present utility model, it should also be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "configured," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Example 1

Referring to fig. 1-3, the present embodiment provides an arrangement structure of a tower boiler burner, which includes a burner 1 located on a tower boiler and a coal mill 7 correspondingly connected to the burner 1, wherein the tower boiler has a furnace width-to-depth ratio of 1.1-1.3, the tower boiler is divided into a front wall 2 and a rear wall 3, six layers of distribution areas are respectively provided on the front wall 2 and the rear wall 3, each layer of distribution area is provided with four burners 1, and the burners 1 on the front wall 2 and the rear wall 3 are arranged in opposite impact.

Further, each tower boiler is provided with six coal mills 7, each coal mill 7 is provided with four coal powder outlet pipelines 6, each coal powder outlet pipeline 6 is connected with a coal powder equalizer 5, each coal powder equalizer 5 is further provided with two coal powder inlet pipelines 4, each coal powder inlet pipeline 4 is correspondingly connected with one combustor 1, namely, each coal mill 7 is correspondingly connected with eight combustors 1.

Further, the coal mill 7 is correspondingly connected with the burners 1 on the upper and lower adjacent two layers of the front wall 2 or the rear wall 3.

Example 2

Referring to fig. 1, 4 and 5, the specifications, distribution and connection modes of the tower boiler, the burner 1 and the coal mill 7 in this embodiment are the same as those of embodiment 1, so the above devices are not repeated, and the difference between embodiment 2 and embodiment 1 is that: the coal mill 7 in this embodiment is correspondingly connected to the burner 1 of the corresponding layer of the front wall 2 and the rear wall 3.

Example 3

Referring to fig. 6 to 8, the specifications and the number of connections of the tower boiler, the burner 1 and the coal mill 7 in this embodiment are the same as those of embodiment 1, so the above devices will not be described in detail, and the difference between embodiment 3 and embodiment 1 is that: in this embodiment, four distribution areas are respectively disposed on the front wall 2 and the rear wall 3, six burners 1 are disposed in each distribution area, wherein the four distribution areas of the front wall 2 are respectively disposed as a first distribution area, a second distribution area, a third distribution area and a fourth distribution area from top to bottom, two burners 1 in the middle of the six burners 1 and the second distribution area in the first distribution area are correspondingly connected with a coal mill 7, six burners 1 in the fourth distribution area are correspondingly connected with two burners 1 in the middle of the third distribution area, finally, the burners 1 on both sides of the second distribution area and the third distribution area are correspondingly connected with a coal mill 7, and the connection mode of the burners 1 of the rear wall 3 and the coal mill 7 is the same as that of the burners 1 of the front wall 2 and the coal mill 7.

The utility model has the beneficial points that:

1. the application of the opposite firing mode in a tower boiler in a 1000MW grade ultra-supercritical unit boiler is realized;

2. the characteristic of small floor area of the tower boiler is brought into play;

3. the advantage of small heat deviation in the opposed firing mode is exerted;

4. multiple groups of embodiments are designed, namely the tower type boiler can select the distribution condition of the burner 1 and the connection mode of the burner 1 and the coal mill 7 according to actual conditions.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (9)

1. The utility model provides a tower boiler combustor's arrangement structure, includes the combustor that is located on the tower boiler and the coal pulverizer that corresponds to be connected with the combustor, its characterized in that, the furnace aspect ratio of tower boiler is 1.1 ~ 1.3, and this tower boiler divide into front wall and back wall, and front wall and back wall respectively are equipped with six layers of distribution district, and every layer of distribution district is equipped with four combustors.

2. The tower boiler burner arrangement of claim 1, wherein the front and rear walls are arranged in a counter-flow arrangement.

3. The arrangement of tower boiler burners according to claim 1, wherein the tower boiler is configured with six coal mills, and each coal mill is connected to eight burners.

4. The arrangement structure of tower boiler burners according to claim 1, wherein the coal mill is provided with four coal powder outlet pipes, each coal powder outlet pipe is connected with a coal powder equalizer, each coal powder equalizer is further provided with two coal powder inlet pipes, and each coal powder inlet pipe is correspondingly connected with one burner.

5. The arrangement structure of tower boiler burners according to claim 4, wherein said coal mill is correspondingly connected with the burners of the upper and lower adjacent two layers of the front wall or the rear wall.

6. The tower boiler burner arrangement of claim 4, wherein the coal pulverizer is correspondingly coupled to the front wall and rear wall corresponding layer burners.

7. The arrangement of tower boiler burners according to claim 1, wherein the front wall and the rear wall are each provided with four levels of distribution areas, and each level of distribution area is provided with six burners.

8. The arrangement structure of tower boiler burners according to claim 7, wherein the four distribution areas of the front wall are respectively set as a first distribution area, a second distribution area, a third distribution area and a fourth distribution area from top to bottom, wherein six burners of the first distribution area and two burners in the middle of the second distribution area are correspondingly connected with one coal mill, six burners of the fourth distribution area and two burners in the middle of the third distribution area are correspondingly connected with one coal mill, and finally the burners on both sides of the second distribution area and the third distribution area are correspondingly connected with one coal mill.

9. The arrangement structure of tower boiler burners according to claim 7, wherein the four distribution areas of the back wall are respectively set as a first distribution area, a second distribution area, a third distribution area and a fourth distribution area from top to bottom, wherein six burners of the first distribution area and two burners in the middle of the second distribution area are correspondingly connected with one coal mill, two burners of the fourth distribution area and two burners in the middle of the third distribution area are correspondingly connected with one coal mill, and finally the burners on both sides of the second distribution area and the third distribution area are correspondingly connected with one coal mill.