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Ear-bent tube bundle device

A bending device and ear technology, which is applied to steam boiler components, lighting and heating equipment, steam boiler accessories, etc., can solve problems such as thermal expansion and contraction, cracking of welded joints of connecting tube bundles, etc.

Pending Publication Date: 2022-03-08
JIANGSU TAIHU BOILER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the boiler system, the function of the header of the superheater / evaporator is to collect the steam in the tube bundle of the heating surface of the superheater / evaporator, and transport it to the steam main pipe through the pipeline, but due to the fluctuation of the flue gas temperature at the inlet of the superheater / evaporator The thermal expansion and contraction of the superheater / evaporator header is particularly prominent, resulting in frequent cracking of the welding joints of the connecting tube bundles at both ends of the header

Method used

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  • Ear-bent tube bundle device

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Embodiment Construction

[0017] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0018] The technical scheme adopted in the present invention is:

[0019] A tube bundle device for ear bends, such as figure 1 As shown, the header 1 is included, the top of the header 1 is provided with a through pipe 2, and a bending device 3 is also provided between the header 1 and the through pipe 2. The bending device 3 includes an outlet 31 located at the top of the header 1. An elbow 32 is provided at the outlet 31, and the elbow 32 includes a first pipe 33 connected to the outlet 31 and a second pipe 34 connected to the through pipe 2, and inward grooves 35 are also provided on both sides of the first pipe 33. , the bottom of the first pipeline 33 is also provided with a welding device 4, and the welding device 4 includes a folding plate 5 provided at the bottom of the first pipeline 33, a welding plate 6 is provided on the folding...

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Abstract

The invention discloses a tube bundle device of a lug bend, and aims to provide the tube bundle device of the lug bend capable of effectively preventing tube cracks, the tube bundle device of the lug bend is characterized by comprising a collecting box, a through tube is arranged at the top end of the collecting box, and a bending device is further arranged between the collecting box and the through tube; the bending device comprises an outlet formed in the top end of the collecting box and a bent pipe arranged at the outlet, the bent pipe comprises a first pipeline connected with the outlet and a second pipeline connected with the through pipe, and inward grooves are further formed in the two sides of the first pipeline.

Description

technical field [0001] The invention relates to the field of boiler equipment, in particular to a tube bundle device with ear bends. Background technique [0002] The so-called boiler tube bundle is a dense tube bundle arranged between the upper and lower drums. The tube bundle and the drum can be expanded or welded. The water and the steam-water mixture in the tubes circulate naturally. The tubes that are heated strongly are the ascending tubes, and the tubes that are weakly heated are the descending tubes. Usually, refractory bricks or cast iron plates are used in the tube bundles. The flue is divided into several processes, and the flue gas flow section of each process is gradually reduced as the flue gas temperature decreases, so as to maintain a sufficiently high flue gas flow rate. [0003] In the boiler system, the function of the header of the superheater / evaporator is to collect the steam in the tube bundle of the heating surface of the superheater / evaporator and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F22B37/22F22G3/00
CPCF22B37/225F22G3/007
Inventor 潘宇峰徐传香强逸王伟星
Owner JIANGSU TAIHU BOILER
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