CN218119777U

CN218119777U - Slag falling pipe for boiler slag discharge

Info

Publication number: CN218119777U
Application number: CN202221795934.5U
Authority: CN
Inventors: 胡战军; 杨黎博; 王锦千; 邢泽林; 刘科
Original assignee: Shenmu Calcium Carbide Group Energy Development Co ltd
Current assignee: Shenmu Calcium Carbide Group Energy Development Co ltd
Priority date: 2022-07-12
Filing date: 2022-07-12
Publication date: 2022-12-23
Anticipated expiration: 2032-07-12

Abstract

The utility model provides a slag pipe that falls for sediment is arranged to boiler belongs to boiler equipment technical field, and it is including falling slag pipe, flexible expansion joint, dust-proof cylinder and scum pipe, and the slag pipe that falls passes through flexible expansion joint and scum pipe intercommunication, and the outside of flexible expansion joint is provided with the dust-proof cylinder, the top of dust-proof cylinder and the bottom swing joint of the slag pipe that falls, the bottom of the dust-proof cylinder and the bottom fixed connection of flexible expansion joint. The utility model discloses a dust protection section of thick bamboo is collected the dust that escapes from flexible expansion joint gap, prevents that the dust from discharging to causing environmental pollution in the atmosphere outward.

Description

Slag falling pipe for boiler slag discharge

Technical Field

The utility model belongs to the technical field of boiler equipment, a arrange the sediment technique of boiler is related to, specifically be used for the boiler to arrange the sediment pipe that falls of sediment.

Background

The slag falling pipe is generally a pipeline for slag discharge of a boiler, the upper end of the slag falling pipe is arranged on an air distribution device of the boiler, the lower end of the slag falling pipe penetrates through an air chamber and is connected with a valve, and the slag falling pipe is generally made of metal materials and is communicated with the slag discharge pipe. Because the temperature of the slag just coming out of the hearth is very high, the slag discharging pipe is heated to generate larger axial and radial displacement, and the boiler is stopped and started to generate larger axial displacement, so that the slag discharging pipe and the slag discharging pipe cannot be positioned and installed. The mode that prior art used the connection of floating will arrange the sediment pipe and fall the sediment union coupling, and floating connection structure must reserve enough big clearance to satisfy the flexible butt joint of arranging sediment pipe and falling the sediment pipe, but reserve the clearance and reduced floating connection structure's sealing performance, the dust escapes from reserving the clearance when arranging the slag, and the dust that floats seriously pollutes operational environment, is unfavorable for the healthy of operative employee.

SUMMERY OF THE UTILITY MODEL

Adopt flexonics between row's sediment pipe and the slag pipe to make row's sediment during dust escape from the preformed gap among the above-mentioned prior art, cause the problem of serious pollution, the utility model provides a slag pipe that falls for the sediment is arranged to the boiler.

The utility model arranges a dustproof cylinder at the flexible butt joint of the slag discharge pipe and the slag falling pipe, and collects the dust discharged from the clearance through the dustproof cylinder, thereby preventing the dust discharged from the clearance from being discharged to the atmosphere to cause environmental pollution; the specific technical scheme is as follows:

a sediment pipe that falls for boiler row sediment, including sediment pipe, flexible expansion joint, dust-proof cylinder and scum pipe, the sediment pipe that falls passes through flexible expansion joint and scum pipe intercommunication, the outside of flexible expansion joint is provided with dust-proof cylinder, dust-proof cylinder's top and the bottom swing joint of sediment pipe that falls, dust-proof cylinder's bottom and flexible expansion joint's bottom fixed connection.

Further limited, a heat insulation cotton layer is filled between the flexible expansion joint and the dustproof cylinder.

Further inject, a sediment pipe that falls for the boiler row sediment still includes the joint pipeline, the sediment pipe that falls passes through joint pipeline and flexible expansion joint intercommunication, the dust-proof sleeve is established in the outside of joint pipeline, be provided with the cotton layer of heat preservation between joint pipeline and the dust-proof sleeve.

Further inject, the slag falling pipe includes upper portion pipeline, middle part pipeline and lower part pipeline, the upper portion pipeline passes through middle part pipeline and lower part pipeline intercommunication, the lower part pipeline passes through joint pipeline and flexible expansion joint intercommunication, the bottom of lower part pipeline and dust-proof cylinder's top swing joint.

Further limiting, the middle pipeline is communicated with the lower pipeline through a gate valve.

Further, the upper pipeline comprises an upper inner pipe and an upper outer pipe, the upper outer pipe is sleeved outside the upper inner pipe, and the upper inner pipe and the upper outer pipe are both communicated with the middle pipeline.

Further limiting, a heat insulation layer is arranged between the upper inner pipe and the upper outer pipe; and heat insulation layers are arranged on the inner side of the middle pipeline and the inner side of the lower pipeline.

It is further defined that the upper inner pipe and the upper outer pipe are both in communication with the middle pipe via a second flange.

Further limiting, the slag falling pipe for boiler slag discharging further comprises an accident slag pipe, and the accident slag pipe penetrates through the pipe wall of the upper outer pipe and the pipe wall of the upper inner pipe to be communicated with the upper inner pipe.

Further, the slag falling pipe for boiler slag discharge further comprises a first flange, and the open end of the upper inner pipe and the open end of the upper outer pipe are both connected with the first flange.

Compared with the prior art, the beneficial effects of the utility model reside in that:

1. the utility model discloses a slag falling pipe for boiler slag discharging, it includes slag falling pipe, flexible expansion joint, dust-proof cylinder and arranges the sediment pipe, and the dust-proof cylinder sets up in the outside of flexible expansion joint, collects the dust that escapes from flexible expansion joint clearance through the dust-proof cylinder, prevents that the dust from discharging to the atmosphere and causing environmental pollution; and protecting the environment.

2. The thermal insulation cotton layer is filled between the flexible expansion joint and the dustproof barrel, thermal insulation protection is carried out through the thermal insulation cotton layer, and due to the fact that the temperature of furnace slag is very high, safety accidents of fire and system explosion caused by burning and overheating caused by thermal contact of the dustproof barrel are prevented, and operation and running safety is guaranteed.

3. The slag falling pipe is communicated with the flexible expansion joint through a joint pipeline, and the slag falling pipe and the flexible expansion joint are convenient to fix and connect through the joint pipeline.

4. The slag falling pipe comprises an upper pipeline, a middle pipeline and a lower pipeline, and the connection of the pipelines facilitates the transportation and installation of the slag falling pipe.

5. The middle pipeline is communicated with the lower pipeline through a gate valve, and the slag discharge amount of the slag falling pipe is conveniently adjusted and controlled through the gate valve.

6. A heat insulation layer is arranged between the upper inner pipe and the upper outer pipe; the inner sides of the middle pipeline and the lower pipeline are both provided with heat insulation layers; prevent through the insulating layer that overheat from appearing in upper portion outer tube, middle part pipeline and lower part pipeline, avoid personnel to scald, incident such as equipment catches fire to take place.

7. The utility model discloses a slag pipe that falls for sediment is arranged to the boiler still includes accident slag pipe, and accident slag pipe can overhaul, arrange the sediment use temporarily at the in-process such as maintenance in the slag pipe that falls, ensures that the in-process boiler does not shut down, equipment can normal operating overhauing, maintenance at the slag pipe that falls.

Drawings

FIG. 1 is a schematic view of the structure of a slag falling pipe for slag discharge of a boiler according to the present invention;

the method comprises the following steps of 1-accident slag pipe, 2-first flange, 3-upper inner pipe, 4-second flange, 5-middle pipeline, 6-gate valve, 7-joint pipeline, 8-flexible expansion joint, 9-dust-proof cylinder, 10-slag discharge pipe, 11-upper outer pipe and 12-lower pipeline.

Detailed Description

The technical solution of the present invention is further explained below with reference to the drawings and examples, but the present invention is not limited to the embodiments explained below.

Examples

Referring to fig. 1, this embodiment is used for slag falling pipe of boiler sediment, including slag falling pipe, flexible expansion joint 8, dust-proof cylinder 9 and row's sediment pipe 10, the slag falling pipe passes through flexible expansion joint 8 and arranges sediment pipe 10 intercommunication, and the outside of flexible expansion joint 8 is provided with dust-proof cylinder 9, the top of dust-proof cylinder 9 and the bottom swing joint of slag falling pipe, the bottom of dust-proof cylinder 9 and the bottom fixed connection of flexible expansion joint 8.

Preferably, the bottom of the dust-proof cylinder 9 is detachably connected with the bottom of the flexible expansion joint 8, and specifically, the dust-proof cylinder can be in a bolt connection mode, a bolt connection mode or the like; can dismantle the bottom of dust protection tube 9 regularly through detachable connected mode, carry out the regular clearance to the dust of collecting in the dust protection tube 9.

More preferably, the dust cylinder 9 is a cylindrical structure formed by winding a 6mm thick steel plate having a diameter of 600mm and a height of 800 mm.

And a heat insulation cotton layer is filled between the flexible expansion joint 8 and the dustproof barrel 9. Specifically, the heat preservation cotton layer can be silicic acid Lv Yanmian or other materials capable of playing a heat insulation role.

The slag falling pipe for boiler slag discharge further comprises a joint pipeline 7, the slag falling pipe is communicated with the flexible expansion joint 8 through the joint pipeline 7, a dust cylinder 9 is sleeved on the outer side of the joint pipeline 7, and a heat insulation cotton layer is arranged between the joint pipeline 7 and the dust cylinder 9. Specifically, the joint pipe 7 is a pipe having a diameter smaller than the diameter of the flexible expansion joint 8 or a pipe having a diameter equal to the diameter of the flexible expansion joint 8.

The slag falling pipe comprises an upper pipeline, a middle pipeline 5 and a lower pipeline 12, the upper pipeline is communicated with the lower pipeline 12 through the middle pipeline 5, the lower pipeline 12 is communicated with the flexible expansion joint 8 through a joint pipeline 7, and the bottom of the lower pipeline 12 is movably connected with the top of the dust-proof cylinder 9.

The middle pipeline 5 is communicated with the lower pipeline 12 through a gate valve 6. The slag discharge amount from the middle pipeline 5 to the lower pipeline 12 can be adjusted through the gate valve 6, and the slag discharge amount in the slag falling pipe is convenient to adjust and control.

The upper portion pipeline includes upper portion inner tube 3 and upper portion outer tube 11, and upper portion outer tube 11 cover is established in the outside of upper portion inner tube 3, and upper portion inner tube 3 and upper portion outer tube 11 all communicate with middle part pipeline 5.

A heat insulation layer is arranged between the upper inner pipe 3 and the upper outer pipe 11; insulation is provided both inside the middle duct 5 and inside the lower duct 12. Prevent through the insulating layer that overheated appears in upper portion outer tube 11, middle part pipeline 5 and lower part pipeline 12, avoid personnel to scald, the incident such as equipment fires takes place.

The upper inner pipe 3 and the upper outer pipe 11 are both communicated with the middle pipeline 5 through a second flange 4.

The slag falling pipe for boiler slag discharging also comprises an accident slag pipe 1, and the accident slag pipe 1 penetrates through the pipe wall of the upper outer pipe 11 and the pipe wall of the upper inner pipe 3 to be communicated with the upper inner pipe 3. The accident slag pipe 1 can temporarily discharge slag for use in the processes of maintenance and repair of the slag falling pipe.

The slag falling pipe for boiler slag discharging further comprises a first flange 2, the open end of the upper inner pipe 3 and the open end of the upper outer pipe 11 are both connected with the first flange 2, and the open end of the upper inner pipe 3 and the open end of the upper outer pipe 11 are inlet ends of the slag falling pipe. The first flange 2 can facilitate the connection of the upper inner pipe 3 and the upper outer pipe 11 with the slag discharge port of the boiler.

The utility model is used for slag pipe that falls of boiler row sediment, its use is: the upper inner pipe 3 and the upper outer pipe 11 are both communicated with a slag falling port of the boiler through the first flange 2, slag discharged from the slag falling port of the boiler is discharged into a pipe cavity of the upper inner pipe 3 through the first flange 2 and is discharged into a pipe cavity of the middle pipeline 5 along the upper inner pipe 3, and the slag discharge amount of the slag falling from the middle pipeline 5 into the lower pipeline 12 can be adjusted and controlled through the gate valve 6; slag in the lower pipeline 12 is discharged outwards through the joint pipeline 7, the flexible expansion joint 8 and the slag discharge pipe 10 in sequence; dust discharged from the connecting gap between the flexible expansion joint 8 and the joint pipeline 7 is collected through a dust-proof cylinder 9 in a centralized manner, so that the dust is prevented from escaping from the connecting gap; through the heat preservation cotton layer between flexible expansion joint 8 and the dust protection tube 9 and between joint line 7 and the dust protection tube 9, prevent that the section of thick bamboo wall of dust protection tube 9 is overheated, avoid causing the firing or arouse equipment to catch fire to operating personnel. The accident slag pipe 1 can be temporarily used for slag discharge in the processes of maintenance and repair of the slag falling pipe.

Claims

1. A slag pipe that falls for sediment is arranged to boiler, its characterized in that, including slag pipe, flexible expansion joint (8), dust-proof cylinder (9) and row's slag pipe (10), the slag pipe passes through flexible expansion joint (8) and arranges slag pipe (10) intercommunication, the outside of flexible expansion joint (8) is provided with dust-proof cylinder (9), the top of dust-proof cylinder (9) and the bottom swing joint of slag pipe that falls, the bottom of dust-proof cylinder (9) and the bottom fixed connection of flexible expansion joint (8).

2. The slag falling pipe for boiler slag discharge according to claim 1, characterized in that a layer of insulating cotton is filled between the flexible expansion joint (8) and the dust-proof cylinder (9).

3. The slag dropping pipe for boiler slag discharge according to claim 2, characterized in that the slag dropping pipe for boiler slag discharge further comprises a joint pipeline (7), the slag dropping pipe is communicated with the flexible expansion joint (8) through the joint pipeline (7), the dust-proof cylinder (9) is sleeved outside the joint pipeline (7), and an insulating cotton layer is arranged between the joint pipeline (7) and the dust-proof cylinder (9).

4. The slag pipe for boiler slag discharge according to claim 3, characterized in that the slag pipe comprises an upper pipe, a middle pipe (5) and a lower pipe (12), the upper pipe is communicated with the lower pipe (12) through the middle pipe (5), the lower pipe (12) is communicated with the flexible expansion joint (8) through the joint pipe (7), and the bottom of the lower pipe (12) is movably connected with the top of the dust-proof cylinder (9).

5. The slag runner for boiler slagging according to claim 4, characterized in that the middle duct (5) communicates with the lower duct (12) through a gate valve (6).

6. The slag runner for boiler slagging according to claim 4, characterized in that the upper pipe comprises an upper inner pipe (3) and an upper outer pipe (11), the upper outer pipe (11) being fitted over the outer side of the upper inner pipe (3), both the upper inner pipe (3) and the upper outer pipe (11) being in communication with the middle pipe (5).

7. The slag falling pipe for boiler clinker removal according to claim 6, characterized in that a thermal insulation layer is arranged between the upper inner pipe (3) and the upper outer pipe (11); and heat insulation layers are arranged on the inner sides of the middle pipeline (5) and the lower pipeline (12).

8. The slag runner for boiler slagging according to claim 6, characterized in that the upper inner pipe (3) and the upper outer pipe (11) are both in communication with the middle duct (5) through a second flange (4).

9. The slag runner for boiler slag discharge according to claim 8, characterized in that the slag runner for boiler slag discharge further comprises an emergency slag runner (1), and the emergency slag runner (1) is communicated with the upper inner pipe (3) through the pipe wall of the upper outer pipe (11) and the pipe wall of the upper inner pipe (3).

10. A slag runner for boiler slag removal according to claim 9, characterized in that it further comprises a first flange (2), and the open end of the upper inner tube (3) and the open end of the upper outer tube (11) are both connected to the first flange (2).