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Superheater protecting device with thermal expansion eliminating function

A protection device and superheater technology, which is applied in steam superheating, lighting and heating equipment, steam generation, etc., and can solve problems such as easy cracking of welds at the joints of headers and serpentine pipes

Active Publication Date: 2017-05-31
哈尔滨红光锅炉总厂有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the problem that the welding seam at the joint between the header and the serpentine tube is easy to crack when the serpentine tube of the superheater in the existing boiler is arranged in the convection tube bundle area, and further provides a superheater with the function of eliminating thermal expansion protective device

Method used

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  • Superheater protecting device with thermal expansion eliminating function
  • Superheater protecting device with thermal expansion eliminating function
  • Superheater protecting device with thermal expansion eliminating function

Examples

Experimental program
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Effect test

specific Embodiment approach 1

[0030] Specific implementation mode one: combine Figure 1 to Figure 13 Describe this embodiment, a superheater protection device with the function of eliminating thermal expansion, which includes a vertical bracket 1, a horizontal bracket group 2 and a tube bundle fixing device 3, and the tube bundle fixing device 3 is connected to the lower drum 100 through the horizontal bracket group 2 Support positioning, the vertical support 1 is a closed cubic structure, the header 101 and its connection with the serpentine tube 102 are located in the vertical support 1 and sealed by the vertical support 1, the serpentine tube 102 passes through the tube bundle fixing device 3 fixed.

[0031] A sealing frame 4 is fixed on the side of the vertical support 1 close to the tube bundle, and the sealing frame 4 is a rectangular frame surrounded by four steel plates, which is used for sealing the connection between the superheater and the boiler.

specific Embodiment approach 2

[0032] Specific implementation mode two: combination Figure 1~6 To illustrate this embodiment, the vertical support 1 includes a positioning frame 1-1, a sealing support frame 1-2, an upper end seal 1-3, a lower end seal 1-4 and four side sealing plates 1-5, and the sealing support frame 1 -2 is fixedly connected to the body frame of the superheater through the positioning frame 1-1, the sealing support frame 1-2 has a cubic structure, and the four sides of the sealing support frame 1-2 are respectively sealed by four side sealing plates 1-5, And the sealing support frame 1-2 is fixedly connected with the body frame of the superheater through four side sealing plates 1-5, the header 101 is located in the sealing support frame 1-2, and the lower end seal 1-4 includes a horizontal fixed connection on the sealing support frame 1 -2 The first steel plate 1-41 at the bottom, the upper end seal 1-3 includes a U-shaped expansion joint 1-31 and a second steel plate 1-32 horizontally ...

specific Embodiment approach 3

[0033] Specific implementation mode three: combination Figure 1~6 To illustrate this embodiment, the sealing support frame 1-2 includes four angle steels arranged vertically and eight channel steels arranged horizontally, and the four angle steels and eight channel steels are assembled into a cubic structure. Such design can reduce the weight of the structure while ensuring the stability of the structure. Other composition and connection relations are the same as the second specific method.

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Abstract

The invention relates to a superheater protecting device, in particular to a superheater protecting device with a thermal expansion eliminating function, and belongs to the technical field of boiler structures. The problem that when a superheater serpentine pipe in an existing boiler is arranged in a convection pipe bundle zone, a welding line at the connecting position of a header and the serpentine pipe is prone to cracking is solved through the superheater protecting device with the thermal expansion eliminating function. The superheater protecting device with the thermal expansion eliminating function comprises a vertical support, a transverse support set and a pipe bundle fixing device. The pipe bundle fixing device is supported and positioned through the transverse support set fixedly connected to a lower boiler barrel. The vertical support is of a sealed cubic structure. The header and the connecting position of the header and the serpentine pipe are located in the vertical support and sealed through the vertical support. The serpentine pipe is fixed through the pipe bundle fixing device. The superheater protecting device with the thermal expansion eliminating function is used for protecting a superheater.

Description

technical field [0001] The invention relates to a superheater protection device, in particular to a superheater protection device with the function of eliminating thermal expansion, and belongs to the technical field of boiler structures. Background technique [0002] With the adjustment of the energy structure, natural gas-fired boilers are widely used, and the components in the boilers further heat the steam from the saturated temperature to the superheated temperature. When the serpentine tube of the superheater is arranged in the convection tube bundle area, the flue gas will wash the serpentine tube horizontally, and the serpentine tube will vibrate along with it. Thermal expansion occurs. If vibration and expansion cannot be eliminated, long-term operation will cause problems such as weld cracking. Contents of the invention [0003] The present invention aims to solve the problem that the welding seam at the joint between the header and the serpentine tube is easy t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F22G3/00
CPCF22G3/008F22G3/009
Inventor 付强李旭白宇坤李帅闫裕森梁红军
Owner 哈尔滨红光锅炉总厂有限责任公司
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