CN218954857U

CN218954857U - Suspension device for tower type boiler header

Info

Publication number: CN218954857U
Application number: CN202320153685.8U
Authority: CN
Inventors: 李兆祥; 林开俊; 郑志鹏; 刘佳豪; 梁志超; 游联欢
Original assignee: Huaneng Luoyuan Power Generation Co Ltd
Current assignee: Huaneng Luoyuan Power Generation Co Ltd
Priority date: 2023-01-28
Filing date: 2023-01-28
Publication date: 2023-05-02
Anticipated expiration: 2033-01-28

Abstract

The utility model relates to a suspension device for a tower type boiler header, which comprises a hearth, and a front wall water-cooling wall and a rear wall water-cooling wall which are respectively arranged at two sides of the hearth; a header is arranged outside the hearth, one end of the header is connected with a coiled pipe in the hearth through a through-wall short pipe, and the other end of the header is connected with a suspension device; the problem that the header suspension device is insufficient in expansion absorption capacity can be solved, and the conditions of pipeline leakage and even abnormal shutdown of a unit caused by the fact that welded seams of a suspension pipe, a header and a pipe seat of the header are pulled and cracked are effectively avoided.

Description

Suspension device for tower type boiler header

Technical Field

The utility model relates to a suspension device for a tower type boiler header, and belongs to the technical field of tower type boilers.

Background

The tower boiler is a tower-type boiler with a hearth at the lower part and a convection flue at the upper part. Large capacity (typically 300MW or more) boilers rarely adopt a full tower type, but only a half tower type, i.e. an air preheater and a draught fan are arranged on zero meter ground.

Compared with pi-type boilers, the tower-type boiler header is obviously different in arrangement, the header is arranged outside a hearth, and the suspension pipe, the header and the boiler body cannot realize synchronous expansion in the operation process in the prior art, so that the condition that a unit is stopped due to pipeline breakage is easy to occur.

Disclosure of Invention

In order to solve the problems in the prior art, the utility model provides the header suspension device for the tower-type boiler, which can solve the problem of insufficient absorption and expansion capacity of the header suspension device and effectively avoid the conditions of pipeline leakage and even abnormal shutdown of a unit caused by the stretch-breaking of welding seams of a suspension pipe, a header and a tube seat thereof.

The technical scheme of the utility model is as follows:

a suspension device for a tower type boiler header comprises a hearth, a front wall water-cooling wall and a rear wall water-cooling wall which are respectively arranged at two sides of the hearth; the outside of the hearth is provided with a header, one end of the header is connected with a coiled pipe in the hearth through a through-wall short pipe, and the other end of the header is connected with a suspension device.

The suspension device comprises suspension pipes and steel beams, wherein four suspension pipes are respectively arranged on two sides of the header, the four suspension pipes are connected through steel plates, the steel beams are erected between the hearth and the suspension pipes, and the other end of the header is connected to the steel beams.

The starting end of the suspension pipe is connected with the water-cooled wall middle header eduction pipe through an interface.

The two sides of the hanging pipe are connected through a top girder, and a top supporting device is arranged at the joint of the hanging pipe and the top girder.

The middle end of the suspension pipe is connected with the inlet of the separator through a three-way valve.

The utility model has the following beneficial effects:

according to the device, the pipes led out from two sides of the hearth are used as the external suspension pipes, and the medium in the suspension pipes is finally led into the outlet lead-out pipe of the water-cooled wall at the upstream of the separator, so that synchronous expansion of the suspension pipes, the header and the boiler body in the operation process is realized, the problem that the header suspension device is insufficient in absorption expansion capacity is solved, and the conditions of pipeline leakage and even abnormal shutdown of a unit caused by the tension cracking of welding seams of the suspension pipes, the header and the header are effectively avoided.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model.

The reference numerals in the drawings are as follows:

1. a furnace; 2. a front wall water cooling wall; 3. a rear wall water cooling wall; 4. a header; 5. a short pipe penetrating through the wall; 6. a hanging tube; 7. a steel beam; 8. a top girder; 61. an interface; 62. a top support device; 63. and a three-way valve.

Detailed Description

The utility model will now be described in detail with reference to the drawings and to specific embodiments.

Referring to fig. 1, the utility model provides a technical scheme:

a suspension device for a tower type boiler header comprises a hearth 1, a front wall water-cooling wall 2 and a rear wall water-cooling wall 3 which are respectively arranged at two sides of the hearth 1; a header 4 is arranged outside the hearth 1, one end of the header 4 is connected with a coiled pipe in the hearth 1 through a through-wall short pipe 5, and the other end is connected with a suspension device; specifically, the suspension device comprises suspension pipes 6 and steel beams 7, four suspension pipes 6 are respectively arranged at two sides of the header 4, the size of each suspension pipe 6 is phi 159 multiplied by 36mm, the four suspension pipes 6 are connected through steel plates, the steel beams 7 are erected between the hearth 1 and the suspension pipes 6, and the other end of the header 4 is connected to the steel beams 7.

Further, the initial end of the suspension pipe 6 is connected with the water-cooled wall middle header eduction pipe through an interface 61.

Further, the tail ends of the hanging pipes 6 at the two sides are connected by arranging a top girder 8, and a top supporting device 62 is arranged at the joint of the hanging pipe 6 and the top girder 8; specifically, the top support 62 serves as a fixing function and adjusts the tightness of the suspension tube 6 by bolts.

Further, the middle end of the suspension tube 6 is connected to the separator inlet through a three-way valve 63.

Working principle example:

one end of a tower type boiler header 4 is connected with a coiled pipe in the hearth 1 through a through-wall

short pipe

5, 4 pipes with diameter of 159 multiplied by 36mm are respectively led out from a front wall middle header and a rear wall middle header to serve as an external suspension pipe 6, and the other end of the header 4 is placed on a steel beam 7 connected with the suspension pipe 6; the medium in the suspension pipe 6 is finally introduced into an outlet pipe of an upstream water-cooled wall of the separator, so that the suspension pipe 6, the header 4 and the boiler body expand synchronously in the operation process.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.

Claims

1. A suspension device for a tower-type boiler header, characterized in that: comprises a hearth (1), and a front wall water-cooling wall (2) and a rear wall water-cooling wall (3) which are respectively arranged at two sides of the hearth (1); the novel furnace is characterized in that a header (4) is arranged outside the furnace (1), one end of the header (4) is connected with a coiled pipe in the furnace (1) through a through-wall short pipe (5), and the other end of the header is connected with a suspension device.

2. A header suspension for a tower boiler according to claim 1, wherein: the suspension device comprises suspension pipes (6) and steel beams (7), wherein the suspension pipes (6) are respectively arranged on two sides of the header (4), the four suspension pipes (6) are connected through steel plates, the steel beams (7) are erected between the hearth (1) and the suspension pipes (6), and the other end of the header (4) is connected to the steel beams (7).

3. A header suspension for a tower boiler according to claim 2, wherein: the starting end of the suspension pipe (6) is connected with the water-cooled wall middle header eduction pipe through an interface (61).

4. A header suspension for a tower boiler according to claim 2, wherein: the two sides of the tail ends of the hanging pipes (6) are connected through a top big plate girder (8), and a top supporting device (62) is arranged at the joint of the hanging pipes (6) and the top big plate girder (8).

5. A header suspension for a tower boiler according to claim 2, wherein: the middle end of the suspension pipe (6) is connected with the inlet of the separator through a three-way valve (63).