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Positioning device for attemperator lining hybrid tube

A technology of positioning device and mixing tube, which is applied in the direction of superheating temperature control, steam superheating, steam generation, etc., and can solve the problems of loosening, breaking of positioning screws, and difficulty in assembling positioning screws

Inactive Publication Date: 2012-10-24
WUXI HUAGUANG BOILER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The fixing method of the mixing tube adopted in the prior art is to open a hole along the ring direction on the thick-walled header, and then use the set screw to fix the mixing tube from the outside to the inside. When the load fluctuates greatly, the set screw will loosen or even break, and the set screw is also difficult to assemble

Method used

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  • Positioning device for attemperator lining hybrid tube

Examples

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Embodiment Construction

[0009] See figure 1 , which includes a thick-walled header 1 and a lined mixing tube 2, the thick-walled header 1 is set inside the lined mixing tube 2, the outer ring surface of the lined mixing tube 2 is provided with a positioning bump 3, and the positioning bump 3 is tight Adhere to the inner wall of the thick-walled header 1, one side of the inner wall of the thick-walled header 1 is welded with a positioning tank 4, and one end of the lined mixing pipe 2 is installed in the groove 5 of the positioning tank 4, and the thick-walled header The other side of the inner wall of 1 is welded with a stopper 7 with a stopper 6 at the end, and the annulus bottom of the other end of the lining mixing tube 2 is supported on the front upper end surface of the stopper 7 .

[0010] The steam outlet pipe 8 goes through the thick-walled header 1 and goes deep into the inner wall cavity of the lining mixing pipe 2. The steam outlet pipe 8 is located in the inner pipe body of the lining mix...

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PUM

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Abstract

The invention provides a positioning device for an attemperator lining hybrid tube. The positioning device ensures free expansion of the hybrid tube and is convenient to assemble. The positioning device comprises a thick wall connecting box and the lining hybrid tube, wherein the lining hybrid tube is sleeved in the thick wall connecting box. The positioning device is characterized in that the outer ring surface of the lining hybrid tube is provided with a positioning bump, the positioning bump clings to the inner wall of the thick wall connecting box, a positioning groove is welded on one side of the inner wall of the thick wall connecting box, one end of the lining hybrid tube is abutted into a concave groove of the positioning groove, a limit block is welded on the other side of the inner wall of the thick wall connecting box, the tail end of the limit block is provided with a stopper, and the bottom of the ring surface at the other end of the lining hybrid tube is supported on the upper end surface of the front of the limit block.

Description

technical field [0001] The invention relates to the structural technical field of a waste heat boiler, in particular to a positioning device for a mixing tube lined with a desuperheater. Background technique [0002] Most of the multi-hole water spray desuperheaters are equipped with thin-walled inner mixing tubes, the purpose is to avoid the thermal impact of the atomized water droplets with imperfect atomization on the inner wall of the thick-walled header. When thick desuperheating water drops onto the inner-lined mixing tube, the temperature can be easily changed due to the small thermal storage inertia of the mixing tube, and the water droplets can be vaporized rapidly, and the thermal stress generated on the inner-lined mixing tube is small . A small amount of steam is passed through the annular space between the header and the mixing tube to balance the pressure with the steam flow, so that the lining mixing tube does not bear the strength stress. Since the temp...

Claims

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Application Information

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IPC IPC(8): F22G5/12
Inventor 朱大峰顾全斌何雁飞顾杰张立新凌建祥任孝明
Owner WUXI HUAGUANG BOILER
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