Self-supporting frame structure of corner tube boiler

Abstract

Provided is a self-supporting frame structure of a corner tube boiler. According to a common boiler, a boiler body is hung on a steel structure through a hanging structure, a large number of steel structures need to be adopted, and the structural design is complex. The boiler comprises a boiler barrel (1), a plurality of groups of water-cooled wall upper headers (5) and a plurality of groups of water-cooled wall lower headers (3), the plurality of groups of water-cooled wall upper headers are respectively and horizontally welded on the boiler barrel, and the plurality of groups of water-cooled wall lower headers are positioned below the plurality of groups of water-cooled wall upper headers and are arranged in parallel; the boiler barrel is connected with each group of water-cooled wall lower collecting boxes through descending pipes (2), and each group of water-cooled wall upper collecting boxes is connected with each group of water-cooled wall lower collecting boxes through ascending pipes (6). The self-supporting device is used for self-supporting of the corner-tube boiler.

Description

Technical Field

[0001] The utility model relates to a self-supporting frame structure of a corner tube boiler. Background Art

[0002] A boiler is an energy conversion device. The energy input to the boiler is the chemical energy in the fuel, and the boiler outputs steam, high-temperature water or organic heat carrier with a certain amount of thermal energy. A pulverized coal boiler is composed of a furnace, a platen superheater, a horizontal flue and a tail flue. Generally, a boiler uses a suspension structure to hang the boiler body on a steel structure, which requires a large amount of steel structure and a complex structural design. Utility Model Content

[0003] The utility model aims to solve the above-mentioned problems and provide a self-supporting frame structure for a corner tube boiler.

[0004] The above purpose is achieved through the following technical solutions:

[0005] A self-supporting frame structure of a corner tube boiler comprises a boiler drum, a plurality of groups of water-cooled wall upper headers and a plurality of groups of water-cooled wall lower headers, wherein the plurality of groups of water-cooled wall upper headers are horizontally welded to the boiler drum, the plurality of groups of water-cooled wall lower headers are located below the plurality of groups of water-cooled wall upper headers and are arranged in parallel, the boiler drum is connected to each group of water-cooled wall lower headers via a downcomer, and each group of water-cooled wall upper headers is connected to each group of water-cooled wall lower headers via an upcomer.

[0006] The corner tube boiler self-supporting frame structure has a plurality of supports welded to the bottom of each group of water-cooled wall lower headers. Beneficial Effects

[0007] 1. The support frame structure of the utility model is not limited by space. Since there is no steel structure, this structure can be used in places with small sites. The self-supporting frame structure uses a frame structure composed of a drum, a riser and a water-cooled wall header to support the boiler body. This structure expands in its own expansion direction, and there will be no steel structure hindering the expansion, reducing the risk of damage to the boiler. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Attached Figure 1 It is a side view of the utility model;

[0009] Attached Figure 2 It is the front view of the utility model;

[0010] Attached Figure 3 It is a top view of the utility model;

[0011] In the figure: 1. boiler drum; 2. downcomer; 3. lower header of water-cooled wall; 4. support; 5. upper header of water-cooled wall; 6. riser. DETAILED DESCRIPTION

[0012] A self-supporting frame structure of a corner tube boiler comprises a boiler drum 1, multiple groups of water-cooled wall upper headers 5 and multiple groups of water-cooled wall lower headers 3. The multiple groups of water-cooled wall upper headers are horizontally welded to the boiler drum respectively, and the multiple groups of water-cooled wall lower headers are located below the multiple groups of water-cooled wall upper headers and arranged in parallel. The boiler drum is connected to each group of water-cooled wall lower headers through a downcomer 2, and each group of water-cooled wall upper headers is connected to each group of water-cooled wall lower headers through a riser 6.

[0013] The self-supporting frame structure of the corner tube boiler has a plurality of supports 4 welded to the bottom of each group of the water-cooled wall lower headers.

[0014] The boiler drum, water-cooled wall upper header, downcomer, water-cooled wall lower header and riser are welded to form a plane frame structure, and then multiple groups of this plane frame form a three-dimensional frame in the front and rear directions, and finally a self-supporting frame structure is realized. This frame structure is supported on the ground foundation with supports and has no steel structure, thus avoiding expansion obstruction caused by the steel structure and causing damage to the boiler. By eliminating the steel structure and using a self-supporting frame structure, the space required for the boiler is smaller, making it more suitable for small-site power plants.

Claims

1. A self-supporting frame structure of a corner tube boiler, characterized by: It consists of a boiler drum, multiple groups of water-cooled wall upper headers and multiple groups of water-cooled wall lower headers. The multiple groups of water-cooled wall upper headers are horizontally welded on the boiler drum respectively, and the multiple groups of water-cooled wall lower headers are located below the multiple groups of water-cooled wall upper headers and arranged in parallel. The boiler drum is connected to each group of water-cooled wall lower headers through a downcomer, and each group of water-cooled wall upper headers is connected to each group of water-cooled wall lower headers through an upcomer.

2. The self-supporting frame structure of the corner tube boiler according to claim 1 is characterized in that: The bottom of each group of water-cooled wall lower headers is respectively welded with a plurality of supports.

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