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Diaphragm seal weld joint welding machine for heat exchanger and welding method

A diaphragm sealing and heat exchanger technology, applied in welding equipment, welding equipment, auxiliary welding equipment, etc., can solve the problem of affecting the assembly quality of the end of the tube box and the end cover of the tube box, the difficulty of ensuring consistent welding sealing quality, and the low welding efficiency. and other problems, to achieve the effect of improving assembly quality and welding quality, good consistency of welding and sealing quality, and high welding efficiency

Inactive Publication Date: 2016-03-30
THE CHALLENGE PETROCHEM MACHINERY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the existing manual operation is used for the seal welding between the edge ring of the flat pad and the end of the pipe box. Not only is the welding efficiency low, the welding sealing quality is difficult to ensure consistency, but also the weld seam is uneven, which affects the end of the pipe box and the pipe box. Assembly quality of end caps

Method used

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  • Diaphragm seal weld joint welding machine for heat exchanger and welding method
  • Diaphragm seal weld joint welding machine for heat exchanger and welding method
  • Diaphragm seal weld joint welding machine for heat exchanger and welding method

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Embodiment 1

[0032] One of the specific implementations of the heat exchanger diaphragm sealing seam welding machine of the present application, the heat exchanger diaphragm sealing seam welding machine is applied to the welding of the heat exchanger diaphragm sealing seam 10, referring to the prior art figure 1 with figure 2 As shown, the heat exchanger includes a tube bundle 2, a tube shell 3 and a tube box 4, and the tube bundle 2 is pierced through the tube sheet 5, wherein: the tube box 4 is provided with a spherical diaphragm sealing disc 6, and the spherical diaphragm sealing disc 6 is arranged in the tube box Between the end 9 and the pipe box end cover 7; the spherical diaphragm sealing disc 6 includes a spherical membrane 61 arranged in the middle and a flat edge ring 62 arranged along the outer circumference of the spherical membrane 61; the flat edge ring 62 It is sealed with the pipe box end 9 through a sealing weld 10 ; the pipe box end 9 is fixedly connected with the pipe b...

Embodiment 2

[0039] The second specific embodiment of the heat exchanger diaphragm sealing seam welding machine of the present application, the main technical solution of this embodiment is the same as that of embodiment 1, and the features not explained in this embodiment adopt the explanation in embodiment 1, No further details will be given here. The difference between this embodiment and embodiment 1 is that the reference image 3 As shown, the frame 12 is provided with an adjustment spoke 15 with a chute in the middle, and the frame 12 is fixed to the pipe box end 9 through the adjustment spoke 15 . Generally speaking, the 9 manholes at the end of the pipe box are relatively fixed and designed as 500mm to The variation range of 700mm, adjust the radial expansion and contraction of the spoke 15, which can be applied to the threaded hole 91 center circle of the pipe box end 9 600mm to The range of variation is 800mm, but the above range of variation can be changed according to d...

Embodiment 3

[0042] The third specific embodiment of the heat exchanger diaphragm sealing seam welding machine of the present application, the main technical solution of this embodiment is the same as that of embodiment 1, and the features not explained in this embodiment adopt the explanation in embodiment 1, No further details will be given here. The difference between this embodiment and Embodiment 1 is that the installation of the frame 12 and the pipe box 4 does not need to use the threaded hole 91 at the end 9 of the pipe box. Instead refer to Figure 5 As shown, the frame 12 is fastened to the pipe box outer circle 1 of the pipe box end 9 by tightening bolts 21 . If necessary, depending on the situation of the threaded holes 91, the number of tightening bolts 21 can be appropriately increased to enhance the connection rigidity.

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Abstract

The invention discloses a diaphragm seal weld joint welding machine for a heat exchanger and a welding method. The welding machine comprises a rack arranged at the end of a pipe box, an annular guide rail arranged on the rack and a welding device. Guide rail teeth are arranged on the annular guide rail. The welding device comprises a welding gun frame, a welding gun arranged on the welding gun frame, a wire feeding device and a guide rail gear arranged on the welding gun frame and matched with the guide rail teeth. Under the driving action of a power source, the welding gun rotates along the annular guide rail. Compared with the prior art, the welding efficiency of the welding machine is high, welding and sealing quality consistency is good, weld joints are uniform, the structure is simple, disassembly and assembly are convenient, and meanwhile the assembly quality of the end and an end cover of the pipe box can be improved. The welding method includes the steps that the welding machine is fastened to a threaded hole in the end of the pipe box through a stud nut of the pipe box of the heat exchanger, or the welding machine is fastened to the outer circle face of the end of the pipe box through a tightening bolt. The welding method is simple and easy to operate, can improve assembly and welding quality and is convenient to industrially popularize on a large scale.

Description

technical field [0001] This application relates to the technical field of shell and tube heat exchangers dedicated to heat exchange and energy-saving equipment for petroleum refining and chemical industry, coal chemical industry, chemical fertilizer industry, air conditioning, air cooling, and electric power facilities, especially related to heat exchanger diaphragm sealing seam welding machines and Welding method. Background technique [0002] In the prior art, the tube-and-tube heat exchanger is the most widely used heat exchanger, widely used in the fields of chemical industry, petroleum, medicine, food, light industry, metallurgy, coking, etc. Convective heat transfer of "steam-steam" and "steam-liquid" heat exchange, as well as heat exchange and condensation processes such as steam condensation and liquid evaporation heat transfer. [0003] Tube-and-tube heat exchangers in the prior art are usually composed of main components such as tube bundles, tube shells, and tube...

Claims

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Application Information

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IPC IPC(8): B23K9/028B23K9/16B23K9/12B23K37/02B23K101/14
CPCB23K9/028B23K9/12B23K9/16B23K37/0211B23K37/0247B23K37/027B23K2101/14
Inventor 陈孙艺
Owner THE CHALLENGE PETROCHEM MACHINERY CORP
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