Ash conveying system for ash bucket of economizer

Abstract

A coal economizer ash bucket ash conveying system comprises a coal economizer ash bucket, the upper end of the coal economizer ash bucket is an end connected with a boiler, the lower end of the coal economizer ash bucket is connected with a tail section A of an ash conveying pipeline, the tail section A is a part between a support A closest to the downstream and the coal economizer ash bucket, and the ash conveying pipeline can be fixed to a steel frame through a plurality of supports A. When the tail section A is installed, the tail section A is fixed to the coal economizer ash bucket. The end, close to the economizer ash hopper, of the tail section A is higher than the other end of the tail section A. Compared with the prior art, the utility model has the technical effects that in the construction process, the thermal expansion amount of the economizer ash hopper is considered in advance, and the upper pipeline of the tail section of the ash conveying pipeline and the upper pipeline of the tail section of the compressed air pipeline are designed to be upwarped, so that the compressed air pipeline and the ash conveying pipeline can be kept horizontal in the working period; and the maintenance becomes simple, and the service life is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the coal electricity technical field, and specifically relates to a coal economizer ash bucket ash conveying system. BACKGROUND

[0002] For example Figure 1 At present, the coal economizer ash bucket ash conveying mainly adopts a positive pressure dense phase conveying system, the upper end 11 of the coal economizer ash bucket 10 is connected with a boiler, the horizontal ash conveying pipeline 20 is fixed on a steel frame through a support A 21, the tail section of the ash conveying pipeline 20 is connected with the lower end of the coal economizer ash bucket 10, the horizontal compressed air pipeline 30 is fixed on the steel frame through a support B 31, the tail section of the compressed air pipeline 30 is connected with the lower end of the coal economizer ash bucket 10, wherein the tail section of the compressed air pipeline 30 is in the shape of a side U letter, and comprises an upper pipeline 33, a side pipeline 32 and a lower pipeline.

[0003] For example Figure 2 During work, because the thermal state expansion amount of the coal economizer ash bucket 10 is too large and is three-way expansion, the upper end of the coal economizer ash bucket 10 is restricted by the boiler and other equipment and mainly expands downward (see the arrow direction in the figure), the downward expansion part extrudes the ash conveying pipeline 20, the tail section 22 (the part between the most downstream support A 21 and the coal economizer ash bucket 10) of the ash conveying pipeline 20 sinks at the end, the tail section 22 becomes inclined, the deformation is serious, and the maintenance is difficult and the service life is shortened.

[0004] At the same time, the upper pipeline 33 of the tail section of the compressed air pipeline 30 also sinks, the upper pipeline 33 becomes inclined, the deformation is serious, the maintenance is difficult and the service life is shortened. Utility model content

[0005] The utility model solves the technical problem of how to design a coal economizer ash bucket ash conveying system which can avoid the tail section from being inclined during work.

[0006] The technical scheme of the utility model is specifically as follows:

[0007] The economizer ash bucket ash conveying system comprises an economizer ash bucket, the upper end of which is connected with a boiler, and the lower end of which is connected with a tail section A of an ash conveying pipeline, the tail section A being a section between a support A closest to the downstream and the economizer ash bucket, the ash conveying pipeline being capable of being fixed on a steel frame through a plurality of supports A, the tail section A of the ash conveying pipeline being in an upwardly inclined state when the tail section A is installed, the end of the tail section A close to the economizer ash bucket being higher than the other end of the tail section A; in the working state of the economizer ash bucket ash conveying system, the tail section A is arranged horizontally as a whole; the lower end of the economizer ash bucket is connected with a tail section B of a compressed air pipeline, the tail section B being a section between a support B closest to the downstream and the economizer ash bucket, the tail section B being in a side U-shaped state and comprising an upper pipeline, a side pipeline and a lower pipeline; the compressed air pipeline is capable of being fixed on the steel frame through a plurality of supports B, the upper pipeline of the tail section B being in an upwardly inclined state when the tail section B is installed, the end of the tail section B close to the economizer ash bucket being lower than the other end of the tail section B; in the working state of the economizer ash bucket ash conveying system, the compressed air pipeline and the upper pipeline are arranged horizontally as a whole.

[0008] The ash conveying pipeline is a metal pipeline.

[0009] Compared with the prior art, the technical effect of the utility model is that, in construction, the hot-state expansion amount of the economizer ash bucket is considered in advance, the tail section of the ash conveying pipeline and the upper pipeline of the tail section of the compressed air pipeline are designed to be upwardly inclined, and during work, the compressed air pipeline and the ash conveying pipeline can be kept horizontal, the maintenance is simple, and the service life is improved. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 is a schematic view of the prior art (one).

[0011] Figure 2 is a schematic view of the prior art (two).

[0012] Figure 3 is a schematic view of the utility model (one).

[0013] Figure 4 is a schematic view of the utility model (two). DETAILED DESCRIPTION

[0014] The utility model will be described in detail below in combination with the drawings and the specific embodiments.

[0015] As Figures 3-4An economizer ash hopper conveying system includes an economizer ash hopper 10, the upper end 11 of which is connected to the boiler, and the lower end of which is connected to the tail section A25 of the ash conveying pipe 20. The tail section A25 is the part between the downstream support A21 and the economizer ash hopper 10. The ash conveying pipe 20 can be fixed to a steel frame by multiple supports A21. When the tail section A25 is installed, the tail section A25 of the ash conveying pipe 20 is inclined upwards, and the end of the tail section A25 near the economizer ash hopper 10 is higher than the other end of the tail section A25. When the economizer ash hopper conveying system is in operation, the tail section A25 is set horizontally as a whole.

[0016] The lower end of the economizer ash hopper 10 is connected to the tail section B35 of the compressed air pipeline 30. The tail section B35 is the part between the downstream support B31 and the economizer ash hopper 10. The tail section B35 is U-shaped and includes an upper pipeline 36, a side pipeline, and a lower pipeline. The compressed air pipeline 30 can be fixed to the steel frame by multiple supports B31. When the tail section B35 is installed, its upper pipeline 36 is inclined upwards. The end of the tail section B35 closest to the economizer ash hopper 10 is lower than the other end of the tail section B35. When the economizer ash hopper conveying system is in operation, the compressed air pipeline 30 and the upper pipeline 36 are set horizontally as a whole.

[0017] like Figure 3 The ash conveying pipe 20 is a metal pipe.

[0018] Its working principle is as follows:

[0019] like Figure 3 During installation:

[0020] The tail section A25 of the ash conveying pipe 20 is inclined upwards, and the end of the tail section A25 that is closer to the economizer ash hopper 10 is higher than the other end of the tail section A25. The ash conveying pipe 20 can be fixed to the steel frame by multiple supports A21.

[0021] When installing the tail section B35, its upper pipe 36 is inclined upwards. The end of the tail section B35 near the economizer ash hopper 10 is lower than the other end of the tail section B35. The compressed air pipe 30 can be fixed to the steel frame by multiple supports B31.

[0022] like Figure 4 During work:

[0023] When the economizer ash hopper conveying system is in operation, the high-pressure air coming in from the compressed air pipeline 30 mixes with the dust in the economizer ash hopper 10 and is then conveyed to the downstream stage through the conveying pipeline 20.

[0024] When the economizer ash hopper 10 is heated, it expands downward (refer to the direction of the arrow in the figure) and partially squeezes the ash conveying pipe 20, causing the end of the tail section A25 of the ash conveying pipe 20 to move downward while the left end does not move downward, and the tail section A25 is set horizontally as a whole.

[0025] At the same time, the tail section B35 of the economizer ash hopper 10 traction compressed air pipeline 30 moves downward, the right end of the upper pipeline 36 moves downward but the right end does not move downward, and the compressed air pipeline 30 and the upper pipeline 36 are set horizontally as a whole.

[0026] During operation, the compressed air pipeline and ash conveying pipeline can be kept in a horizontal position, which simplifies maintenance and extends their service life.

[0027] For other details, please refer to the existing technology.

[0028] The above description is only a preferred embodiment of the present utility model. It should be noted that those skilled in the art can make several changes and improvements without departing from the overall concept of the present utility model, and these should also be considered within the protection scope of the present utility model.

Claims

1. An economizer ash hopper conveying system, comprising an economizer ash hopper (10), the upper end (11) of which is connected to a boiler, and the lower end of which is connected to the tail section A (25) of an ash conveying pipe (20), the tail section A (25) being the portion between the downstream support A (21) and the economizer ash hopper (10), the ash conveying pipe (20) being fixed to a steel frame by multiple supports A (21), characterized in that: When installing the tail section A (25), the tail section A (25) of the ash conveying pipe (20) is inclined upwards, and the end of the tail section A (25) near the economizer ash hopper (10) is higher than the other end of the tail section A (25); when the economizer ash hopper ash conveying system is in operation, the tail section A (25) is set horizontally as a whole. The lower end of the economizer ash hopper (10) is connected to the tail section B (35) of the compressed air pipeline (30). The tail section B (35) is the part between the support B (31) closest to the downstream and the economizer ash hopper (10). The tail section B (35) is U-shaped and includes an upper pipeline (36), a side pipeline, and a lower pipeline. The compressed air pipeline (30) can be fixed on the steel frame through multiple supports B (31). When the tail section B (35) is installed, its upper pipeline (36) is inclined upwards. The end of the tail section B (35) closest to the economizer ash hopper (10) is lower than the other end of the tail section B (35). When the economizer ash hopper conveying system is in operation, the compressed air pipeline (30) and the upper pipeline (36) are set horizontally as a whole.

2. The economizer ash hopper conveying system as described in claim 1, characterized in that: The ash conveying pipeline (20) is a metal pipeline.

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