Auxiliary device for in-hole welded pipe and using method of the device
A technology for auxiliary devices and welded pipes, applied in auxiliary devices, welding/cutting auxiliary equipment, auxiliary welding equipment, etc., can solve problems such as affecting the welding effect of workpieces to be processed, and achieve the effects of preventing large losses, reducing usage, and preventing shaking
Active Publication Date: 2019-06-11
HEFEI GENERAL MACHINERY RES INST +1
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Problems solved by technology
[0004] In order to overcome the deficiencies of the above-mentioned prior art, the purpose of the present invention is to solve the problem in the prior art that welding in the air and the high temperature generated by welding affect the welding effect of the workpiece itself and or the welding place. For this reason, the present invention provides a Auxiliary device for in-hole welded pipe and method for using the device
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[0036] Such as Figure 1-3 As shown, an auxiliary device for welded pipes in holes, wherein the fixed pipe 5 is sleeved inside the hole 6 of the tube sheet. The device includes a main body mechanism 4 , a first sealing component 2 and a second sealing component 7 . The main body mechanism 4 is provided with an air inlet and an air outlet 9, the air inlet is filled with the protective gas required for welding, and the air outlet 9 is provided with a gas guiding mechanism for guiding the outflowing protective gas to a designated area. In this embodiment, the shielding gas is directed not only to the area to be welded, but also to the gap between the tube plate hole and the heat exchange tube. Since the area to be welded, the tube plate hole and the heat exchange tube near the area to be welded will all heat up during welding, the shielding gas at this time can prevent the welding part at high temperature, the tube to be fixed 5, and the tube plate hole 6 from generating brittle...
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The invention discloses an auxiliary device used for an in-hole welding pipe and a use method of the device. The device comprises a main mechanism, the main mechanism comprises an air inlet and an air outlet, the air inlet is inflated with protection gas needed during welding, and an air guide mechanism for guiding protection gas flowing out of the air outlet to the designated position is arranged on the air outlet; the device has the beneficial effects that the device is suitable for welding a heat exchange pipe in a pipe plate hole in a zirconium steel composite pipe plate, the air guide mechanism in the device guides the protection gas into the designated position, therefore, the protection gas can be guided to the to-be-welded area, and the protection gas can be guided to the gap between the pipe plate hole and the heat exchange pipe. due to the fact that during welding, temperature of the to-be-welded area, the pipe plate hole close to the to-be-welded area and the heat exchange pipe rises, at the moment, the protection gas can prevent the welding portion, the to-be-fixed pipe and the pipe plate hole at the high temperature from generating brittle compounds.
Description
technical field [0001] The invention relates to the field of welding processing in the machinery industry, in particular to an auxiliary device for in-hole welded pipes and a method for using the device. Background technique [0002] In the field of welding, the parts to be welded or the materials used for welding react in the air under the action of the high temperature generated during the welding process, thereby affecting the parts to be welded or the welding place. [0003] For example, the welding between the zirconium tube and the tube sheet, the zirconium tube is sleeved inside the tube sheet, and the zirconium tube and the tube sheet need to be welded. The zirconium tube and the area to be welded have great activity at high temperatures and can be used with Many gases react, and air (oxygen is the most serious) reacts with zirconium to form brittle compounds, which makes the mechanical properties and corrosion resistance of the weld drop sharply. In order to preven...
Claims
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IPC IPC(8): B23K37/00
CPCB23K37/00
Inventor 吴磊窦万波张海波张立权崔军汪兵葛新生徐鹏程周挺王晓峰马晓光金挺张均祥张让福
Owner HEFEI GENERAL MACHINERY RES INST