WO2021103880A1 - 一种高合金管道的焊接缺陷修复结构 - Google Patents

一种高合金管道的焊接缺陷修复结构 Download PDF

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Publication number
WO2021103880A1
WO2021103880A1 PCT/CN2020/123543 CN2020123543W WO2021103880A1 WO 2021103880 A1 WO2021103880 A1 WO 2021103880A1 CN 2020123543 W CN2020123543 W CN 2020123543W WO 2021103880 A1 WO2021103880 A1 WO 2021103880A1
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Prior art keywords
alloy
temporary
blocking member
temporary plugging
welding
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PCT/CN2020/123543
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English (en)
French (fr)
Inventor
井立太
梁宏刚
项振宁
王能淼
王登第
刘子豪
刘超
Original Assignee
中国电建集团山东电力建设第一工程有限公司
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Publication of WO2021103880A1 publication Critical patent/WO2021103880A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/16—Arc welding or cutting making use of shielding gas
    • B23K9/167—Arc welding or cutting making use of shielding gas and of a non-consumable electrode
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/32—Accessories
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/32—Accessories
    • B23K9/325—Devices for supplying or evacuating shielding gas

Definitions

  • the invention belongs to the technical field of welding defect repairing, and particularly relates to a welding defect repairing structure of a high-alloy pipeline.
  • the traditional treatment method is to clean the weld, re-grind the groove, and perform butt welding again.
  • the weld is removed and removed. It takes time and effort to re-grind the groove.
  • the purpose of the present invention is to overcome the deficiencies in the prior art and provide a structure for repairing welding defects of high-alloy pipelines.
  • the bottom of the counter gap is first welded until a weld is formed.
  • stop welding hold the high-frequency argon arc welding torch, and withdraw a part of the tungsten electrode from the gun body of the high-frequency argon arc welding torch, and pass the tungsten electrode from the top of the counter gap to the welding defect between the tungsten electrode and the root of the weld.
  • Contact at this time, control the high-frequency argon arc welding gun to work until the welding defect repair is completed.
  • the welding defect at the root of the weld is located in the argon gas protection zone, there is no need to worry about the welding defect repair caused by the tungsten electrode being pulled out of the gun body.
  • the problem that the protective gas shield cannot be formed when the welding is adopted the above method does not need to clean the welding seam and re-grind the groove, and perform the butt welding again, only need to directly repair the welding defect position, which is more efficient and saves time and effort. .
  • a repair structure for welding defects of high-alloy pipelines including two high-alloy pipelines to be welded oppositely placed, and a first temporary plugging part and a second temporary plugging part are respectively arranged inside the opposite ends of the two high-alloy pipelines to be welded
  • An argon gas protection zone is formed between the first temporary plugging part, the second temporary plugging part, and two high-alloy pipes to be welded, and argon gas is introduced into the argon gas protection zone, and two A high-frequency argon arc welding gun is provided above the counter gap of the high-alloy pipeline to be welded, and the bottom of the counter gap is fixedly connected by a weld, and the tungsten electrode of the high-frequency argon arc welding gun passes through the top of the counter gap and Contact with welding defects on the root of the weld.
  • an insulating layer is provided on the outer surface of the inner part of the tungsten electrode located in the counter gap.
  • the welding defect repairing structure of the high-alloy pipeline further includes an air supply hose, an argon vaporizer, and an air intake pipe.
  • One end of the air supply hose is connected to the air intake pipe, and the air supply hose is opposite to another.
  • One end is connected to the argon vaporizer, the gas inlet pipe is fixedly connected to the first temporary blocking member, the inside of the gas inlet pipe is communicated with the argon gas protection zone, and the gas inlet pipe is a stainless steel pipe .
  • the first temporary blocking member includes a circular heat-resistant rubber plate and two circular pressure plates, the two circular pressure plates are symmetrically arranged, and the two circular pressure plates are connected by bolts ,
  • the annular heat-resistant rubber plate is located between the two annular pressing plates, and is in close contact with the side surfaces of the two annular pressing plates respectively, and the outer circumference of the annular heat-resistant rubber plate The surface is in close contact with the inner wall of the high-alloy pipe to be welded, and the outer surface of the air inlet pipe is fixedly connected with the inner circumferential surface of the annular pressure plate.
  • the second temporary blocking member is water-soluble paper.
  • the structure of the second temporary blocking member is the same as that of the first temporary blocking member, and a connecting rod is provided between the first temporary blocking member and the second temporary blocking member, The opposite ends of the connecting rod are respectively fixedly connected with the first temporary blocking member and the second temporary blocking member.
  • the air inlet pipe penetrates the first temporary blocking member, and the portion of the air inlet pipe that penetrates the first temporary blocking member is located between the counter gap and the first temporary blocking member, so A plurality of argon gas vent holes are provided in the part of the gas inlet pipe penetrating the first temporary blocking member, and the inside of the gas inlet pipe and the argon gas protection zone are communicated through the plurality of argon gas vent holes.
  • one or more vent holes are provided on the second temporary blocking member.
  • the welding defects are located in the argon gas protection zone, so there is no need to worry about the problem that a protective gas shield cannot be formed when the welding defect is repaired due to a part of the tungsten electrode being pulled out of the gun body.
  • the above method there is no need to clean the weld and re-grind For the groove, the butt welding is performed again, and only the welding defect position needs to be directly repaired, which is more efficient and saves time and effort.
  • An insulating layer is provided on the outer surface of the inner part of the tungsten electrode located in the counter gap, which can prevent the tungsten electrode from contacting the groove when the high-frequency argon arc welding gun is working.
  • the intake pipe adopts a stainless steel pipe, and the intake pipe is fixedly connected with the first temporary blocking member.
  • the placement and removal of the first temporary blocking member can be realized by only holding the intake pipe, which is more efficient.
  • the annular heat-resistant rubber plate is located between the two annular pressure plates and is in close contact with the sides of the two annular pressure plates respectively, which can realize the sealed connection between the first temporary plugging part and the high-alloy pipe to be welded .
  • the second temporary blocking member is water-soluble paper, which has a lower cost.
  • the second temporary plugging element adopts the same structure as the first temporary plugging element, and the first temporary plugging element and the second temporary plugging element are fixedly connected by a connecting rod, which can realize the first temporary plugging element and The second temporary plugging part can be picked and placed at the same time, which is fast and efficient.
  • the inlet pipe penetrates the first temporary plugging member, and the portion of the inlet pipe penetrating the first temporary plugging member is provided with a plurality of argon gas vent holes, which can make the argon gas concentration in the argon gas protection zone more uniform.
  • One or more vent holes are provided on the second temporary blocking member, which facilitates the exhaust of excess argon in the argon protection zone.
  • Figure 1 is a schematic diagram of the overall structure of a welding defect repair structure for a high-alloy pipeline of the present invention
  • Figure 2 is a schematic structural view of a first temporary plugging member in a welding defect repair structure of a high-alloy pipeline according to the present invention
  • Fig. 3 is a schematic diagram of the assembly of the first temporary blocking member and the air intake pipe in the welding defect repair structure of a high-alloy pipeline of the present invention.
  • the invention provides a welding defect repair structure for a high-alloy pipeline.
  • a repair structure for welding defects of high-alloy pipelines including two high-alloy pipelines 1 to be welded oppositely placed, and a first temporary plug 5 and a second temporary plugging part 5 and a second temporary plug are respectively arranged inside the opposite ends of the two high-alloy pipelines 1 to be welded
  • An argon gas protection zone 9 is formed between the plugging piece 6, the first temporary plugging piece 5, the second temporary plugging piece 6 and the two high-alloy pipes 1 to be welded, and argon gas is passed into the argon gas protection zone 9,
  • a high-frequency argon arc welding torch 4 is arranged above the counter gap 2 of the two high-alloy pipes 1 to be welded, and the bottom of the counter gap 2 is fixedly connected by a weld 3, and the tungsten electrode (not marked) of the high-frequency argon arc welding torch 4 passes through The top of the gap 2 is in contact with the welding defect on the root of the welding seam 3.
  • the welding defect at the root of the weld 3 is located in the argon gas protection zone 9, there is no need to worry about the welding defect caused by the tungsten electrode being pulled out of the gun body.
  • the protective gas shield cannot be formed when repairing the welding defect With the above-mentioned method, there is no need to clean the weld 3 and re-grind the groove and perform the butt welding again. It only needs to directly repair the welding defect position, which is more efficient and saves time and effort.
  • an insulating layer 41 is provided on the outer surface of the inner part of the tungsten electrode located in the counter gap 2.
  • An insulating layer 41 is provided on the outer surface of the inner part of the tungsten electrode located in the counter gap 2, which can prevent the tungsten electrode from contacting the groove when the high-frequency argon arc welding gun 4 is working.
  • the welding defect repair structure of the high-alloy pipeline further includes an air supply hose 8, an argon vaporizer (not shown), and an air intake pipe 7.
  • One end of the air supply hose 8 is connected to the air intake pipe 7, and the air supply hose 8 The opposite end is connected to an argon vaporizer, the gas inlet pipe 7 is fixedly connected with the first temporary blocking member 5, the inside of the gas inlet pipe 7 is connected with the argon gas protection zone 9, and the gas inlet pipe 7 is a stainless steel pipe.
  • the air inlet pipe 7 is a stainless steel pipe, and the air inlet pipe 7 is fixedly connected with the first temporary blocking member 5, and the placement and removal of the first temporary blocking member 5 can be realized by only holding the air inlet pipe 7 with high efficiency.
  • the first temporary blocking member 5 includes an annular heat-resistant rubber plate 52 and two annular pressing plates 51, the two annular pressing plates 51 are symmetrically arranged, and a bolt 53 is passed between the two annular pressing plates 51.
  • the annular heat-resistant rubber plate 52 is located between the two annular pressing plates 51 and is in close contact with the side surfaces of the two annular pressing plates 51, and the outer circumferential surface of the annular heat-resistant rubber plate 52 is in close contact with the sides of the two annular pressing plates 51.
  • the inner wall of the high-alloy pipe 1 to be welded is in close contact, and the outer surface of the intake pipe 7 is fixedly connected with the inner circumferential surface of the annular pressure plate 51.
  • the annular heat-resistant rubber plate 52 is located between the two annular pressing plates 51, and is in close contact with the sides of the two annular pressing plates 51, respectively, so that the first temporary plugging member 5 can be connected to the high-alloy pipe 1 to be welded.
  • the sealed connection is located between the two annular pressing plates 51, and is in close contact with the sides of the two annular pressing plates 51, respectively, so that the first temporary plugging member 5 can be connected to the high-alloy pipe 1 to be welded. The sealed connection.
  • the second temporary blocking member 6 is water-soluble paper.
  • the second temporary blocking member 6 is water-soluble paper, and the cost is low.
  • the structure of the second temporary blocking member 6 is the same as that of the first temporary blocking member 5, and a connecting rod (not shown) is provided between the first temporary blocking member 5 and the second temporary blocking member 6 , The opposite ends of the connecting rod are respectively fixedly connected with the first temporary blocking member 5 and the second temporary blocking member 6.
  • the second temporary plugging element 6 and the first temporary plugging element 5 adopt the same structure, and the first temporary plugging element 5 and the second temporary plugging element 6 are fixedly connected by a connecting rod, which can realize the first temporary plugging
  • the part 5 and the second temporary blocking part 6 can be taken and put at the same time, which is fast and efficient.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Arc Welding In General (AREA)

Abstract

一种高合金管道的焊接缺陷修复结构，包括对口放置的两个待焊接高合金管道(1)，两个待焊接高合金管道的对口端内部分别设有第一临时封堵件(5)和第二临时封堵件(6)，第一临时封堵件、第二临时封堵件及两个待焊接高合金管道之间形成氩气保护区(9)，氩气保护区内通入有氩气，两个待焊接高合金管道的对口间隙(2)的上方设有高频氩弧焊枪(4)，对口间隙的底部通过焊缝固定连接，高频氩弧焊枪的钨极穿过对口间隙的顶部并与焊缝(4)根部上的焊接缺陷接触。该结构解决了对高合金管道焊缝根部的焊接缺陷进行修复时费事费力的问题。

Description

一种高合金管道的焊接缺陷修复结构 技术领域
本发明属于焊接缺陷修复技术领域，特别涉及一种高合金管道的焊接缺陷修复结构。
 背景技术
随着电力工业的快速发展，超超临界火电机组的管道越来越多的采用新型马氏体耐热钢SA213-T91、SA213-T92以及细晶奥氏体耐热钢Super304H、TP347HG、HR3C等高合金材料，在通过钨极惰性气体保护焊的方式上述高合金管道进行对口焊接时，由于待焊接管道的合金含量较高，因此焊缝的根部极容易被氧化并产生焊接缺陷，大大降低了焊接接头的性能，轻则减少高合金管道的使用寿命，重则发生爆管。
通过对高合金管道焊接性能的研究，制定了背面充氩保护的高合金管道焊接方法，能够有效防止焊缝的根部被氧化和由于被氧化产生的焊接缺陷，但是焊接工人操作不当和作业环境的限制等原因仍然会导致焊缝的根部出现其他形式的焊接缺陷，比如在对超超临界火电机组的锅炉排管进行对口焊接时，由于若干平行排列的管道之间的距离比较近，不方便焊接工人进行焊接作业，因此焊缝根部比较容易出现其他形式的焊接缺陷，而且该种焊接缺陷主要集中在焊缝底端的根部。
 技术问题
现有技术中，在焊缝的根部出现焊接缺陷后，传统的处理方法是将焊缝清除干净后重新打磨坡口，再次进行对口焊接，但是由于高合金材料非常坚硬，在进行焊缝清除和重新打磨坡口时非常地费时费力。
 技术解决方案
本发明的目的是克服现有技术中的不足，提供一种高合金管道的焊接缺陷修复结构，在对两个待焊接高合金管道进行焊接时，先对对口间隙的底部进行焊接直至形成一段焊缝，此时停止焊接，手持高频氩弧焊枪，并将钨极从高频氩弧焊枪的枪体内抽出一部分，将钨极从对口间隙的顶部穿过直至钨极与焊缝根部的焊接缺陷接触，此时，控制高频氩弧焊枪开始工作直至焊接缺陷修复完成，由于焊缝根部的焊接缺陷位于氩气保护区内，因此不用担心钨极从枪体中抽出一部分而导致的焊接缺陷修复时无法形成保护气罩的问题，采用上述方式，不需要将焊缝清除干净后重新打磨坡口，再次进行对口焊接，只需要对焊接缺陷位置进行直接修复即可，效率较高，省时省力。
为了实现上述目的，本发明采用的技术方案是：
一种高合金管道的焊接缺陷修复结构，包括对口放置的两个待焊接高合金管道，两个待焊接高合金管道的对口端内部分别设有第一临时封堵件和第二临时封堵件，所述第一临时封堵件、所述第二临时封堵件及两个待焊接高合金管道之间形成氩气保护区，所述氩气保护区内通入有氩气，两个所述待焊接高合金管道的对口间隙的上方设有高频氩弧焊枪，所述对口间隙的底部通过焊缝固定连接，所述高频氩弧焊枪的钨极穿过所述对口间隙的顶部并与所述焊缝根部上的焊接缺陷接触。
优选的，所述钨极位于所述对口间隙内部分的外表面设有绝缘层。
优选的，所述高合金管道的焊接缺陷修复结构还包括送气软管、氩气气化器及进气管，所述送气软管的一端与所述进气管相连，所述送气软管的相对另一端与所述氩气气化器相连，所述进气管与所述第一临时封堵件固定连接，所述进气管的内部与所述氩气保护区相连通，所述进气管为不锈钢管。
优选的，所述第一临时封堵件包括圆环形耐热橡胶板和两个圆环形压板，两个所述圆环形压板对称设置，两个圆环形压板之间通过螺栓进行连接，所述圆环形耐热橡胶板位于两个所述圆环形压板之间，并分别与两个所述圆环形压板的侧面紧密接触，所述圆环形耐热橡胶板的外圆周面与所述待焊接高合金管道的内壁紧密接触，所述进气管的外表面与所述圆环形压板的内圆周面固定连接。
优选的，所述第二临时封堵件为水溶纸。
优选的，所述第二临时封堵件的结构与所述第一临时封堵件的结构相同，所述第一临时封堵件和所述第二临时封堵件之间设有连接杆，所述连接杆的相对两端分别与所述第一临时封堵件、所述第二临时封堵件固定连接。
优选的，所述进气管贯穿所述第一临时封堵件，所述进气管贯穿所述第一临时封堵件的部分位于所述对口间隙与所述第一临时封堵件之间，所述进气管贯穿所述第一临时封堵件的部分设有多个氩气放气孔，所述进气管内部与所述氩气保护区之间通过多个所述氩气放气孔进行连通。
优选的，所述第二临时封堵件上设有一个或多个排气孔。
 有益效果
1)在对两个待焊接高合金管道进行焊接时，先对对口间隙的底部进行焊接直至形成一段焊缝，此时停止焊接，手持高频氩弧焊枪，并将钨极从高频氩弧焊枪的枪体内抽出一部分，将钨极从对口间隙的顶部穿过直至钨极与焊缝根部的焊接缺陷接触，此时，控制高频氩弧焊枪开始工作直至焊接缺陷修复完成，由于焊缝根部的焊接缺陷位于氩气保护区内，因此不用担心钨极从枪体中抽出一部分而导致的焊接缺陷修复时无法形成保护气罩的问题，采用上述方式，不需要将焊缝清除干净后重新打磨坡口，再次进行对口焊接，只需要对焊接缺陷位置进行直接修复即可，效率较高，省时省力。
2)钨极位于对口间隙内部分的外表面设有绝缘层，能够防止高频氩弧焊枪在工作时，钨极与坡口发生接触。
3)进气管采用不锈钢管，进气管与第一临时封堵件固定连接，只需手持进气管便能实现第一临时封堵件的放置和取出，效率较高。
4)圆环形耐热橡胶板位于两个圆环形压板之间，并分别与两个圆环形压板的侧面紧密接触，能够实现第一临时封堵件与待焊接高合金管道的密封连接。
5)第二临时封堵件为水溶纸，成本较低。
6)第二临时封堵件与第一临时封堵件采用相同结构，第一临时封堵件和第二临时封堵件之间通过连接杆进行固定连接，能够实现第一临时封堵件和第二临时封堵件的同时取放，快捷高效。
7)进气管贯穿第一临时封堵件，进气管贯穿第一临时封堵件的部分设有多个氩气放气孔，能够使得氩气保护区内的氩气浓度更加均匀。
8)第二临时封堵件上设有一个或多个排气孔，方便了将氩气保护区内的多余氩气排出。
 附图说明
附图1是本发明一种高合金管道的焊接缺陷修复结构的整体结构示意图；
附图2是本发明一种高合金管道的焊接缺陷修复结构中第一临时封堵件的结构示意图；
附图3是本发明一种高合金管道的焊接缺陷修复结构中第一临时封堵件和进气管的装配示意图。
图中：1、待焊接高合金管道；2、对口间隙；3、焊缝；4、高频氩弧焊枪；41、绝缘层；5、第一临时封堵件；51、圆环形压板；52、圆环形耐热橡胶板；53、螺栓；6、第二临时封堵件；7、进气管；71、氩气放气孔；8、送气软管；9、氩气保护区。
 本发明的实施方式
本发明提供一种高合金管道的焊接缺陷修复结构。
一种高合金管道的焊接缺陷修复结构，包括对口放置的两个待焊接高合金管道1，两个待焊接高合金管道1的对口端内部分别设有第一临时封堵件5和第二临时封堵件6，第一临时封堵件5、第二临时封堵件6及两个待焊接高合金管道1之间形成氩气保护区9，氩气保护区9内通入有氩气，两个待焊接高合金管道1的对口间隙2的上方设有高频氩弧焊枪4，对口间隙2的底部通过焊缝3固定连接，高频氩弧焊枪4的钨极(未标示)穿过对口间隙2的顶部并与焊缝3根部上的焊接缺陷接触。
本申请提出的技术方案中，在对两个待焊接高合金管道1进行焊接时，先对对口间隙2的底部进行焊接直至形成一段焊缝3，此时停止焊接，手持高频氩弧焊枪4，并将钨极从高频氩弧焊枪4的枪体内抽出一部分，将钨极从对口间隙2的顶部穿过直至钨极与焊缝3根部的焊接缺陷缺陷接触，此时，控制高频氩弧焊枪4开始工作直至焊接缺陷修复完成，由于焊缝3根部的焊接缺陷位于氩气保护区9内，因此不用担心钨极从枪体中抽出一部分而导致的焊接缺陷修复时无法形成保护气罩的问题，采用上述方式，不需要将焊缝3清除干净后重新打磨坡口，再次进行对口焊接，只需要对焊接缺陷位置进行直接修复即可，效率较高，省时省力。
优选的，钨极位于对口间隙2内部分的外表面设有绝缘层41。钨极位于对口间隙2内部分的外表面设有绝缘层41，能够防止高频氩弧焊枪4在工作时，钨极与坡口发生接触。
优选的，高合金管道的焊接缺陷修复结构还包括送气软管8、氩气气化器(图未示)及进气管7，送气软管8的一端与进气管7相连，送气软管8的相对另一端与氩气气化器相连，进气管7与第一临时封堵件5固定连接，进气管7的内部与氩气保护区9相连通，进气管7为不锈钢管。进气管7采用不锈钢管，进气管7与第一临时封堵件5固定连接，只需手持进气管7便能实现第一临时封堵件5的放置和取出，效率较高。
优选的，第一临时封堵件5包括圆环形耐热橡胶板52和两个圆环形压板51，两个圆环形压板51对称设置，两个圆环形压板51之间通过螺栓53进行连接，圆环形耐热橡胶板52位于两个圆环形压板51之间，并分别与两个圆环形压板51的侧面紧密接触，圆环形耐热橡胶板52的外圆周面与待焊接高合金管道1的内壁紧密接触，进气管7的外表面与圆环形压板51的内圆周面固定连接。圆环形耐热橡胶板52位于两个圆环形压板51之间，并分别与两个圆环形压板51的侧面紧密接触，能够实现第一临时封堵件5与待焊接高合金管道1的密封连接。
优选的，第二临时封堵件6为水溶纸。第二临时封堵件6为水溶纸，成本较低。
优选的，第二临时封堵件6的结构与第一临时封堵件5的结构相同，第一临时封堵件5和第二临时封堵件6之间设有连接杆(图未示)，连接杆的相对两端分别与第一临时封堵件5、第二临时封堵件6固定连接。第二临时封堵件6与第一临时封堵件5采用相同结构，第一临时封堵件5和第二临时封堵件6之间通过连接杆进行固定连接，能够实现第一临时封堵件5和第二临时封堵件6的同时取放，快捷高效。

Claims (8)

  1. 一种高合金管道的焊接缺陷修复结构，包括对口放置的两个待焊接高合金管道，两个待焊接高合金管道的对口端内部分别设有第一临时封堵件和第二临时封堵件，所述第一临时封堵件、所述第二临时封堵件及两个待焊接高合金管道之间形成氩气保护区，所述氩气保护区内通入有氩气，其特征在于，两个所述待焊接高合金管道的对口间隙的上方设有高频氩弧焊枪，所述对口间隙的底部通过焊缝固定连接，所述高频氩弧焊枪的钨极穿过所述对口间隙的顶部并与所述焊缝根部上的焊接缺陷接触。
  2. 根据权利要求1所述的一种高合金管道的焊接缺陷修复结构，其特征在于，所述钨极位于所述对口间隙内部分的外表面设有绝缘层。
  3. 根据权利要求2所述的一种高合金管道的焊接缺陷修复结构，其特征在于，所述高合金管道的焊接缺陷修复结构还包括送气软管、氩气气化器及进气管，所述送气软管的一端与所述进气管相连，所述送气软管的相对另一端与所述氩气气化器相连，所述进气管与所述第一临时封堵件固定连接，所述进气管的内部与所述氩气保护区相连通，所述进气管为不锈钢管。
  4. 根据权利要求3所述的一种高合金管道的焊接缺陷修复结构，其特征在于，所述第一临时封堵件包括圆环形耐热橡胶板和两个圆环形压板，两个所述圆环形压板对称设置，两个圆环形压板之间通过螺栓进行连接，所述圆环形耐热橡胶板位于两个所述圆环形压板之间，并分别与两个所述圆环形压板的侧面紧密接触，所述圆环形耐热橡胶板的外圆周面与所述待焊接高合金管道的内壁紧密接触，所述进气管的外表面与所述圆环形压板的内圆周面固定连接。
  5. 根据权利要求4所述的一种高合金管道的焊接缺陷修复结构，其特征在于，所述第二临时封堵件为水溶纸。
  6. 根据权利要求4所述的一种高合金管道的焊接缺陷修复结构，其特征在于，所述第二临时封堵件的结构与所述第一临时封堵件的结构相同，所述第一临时封堵件和所述第二临时封堵件之间设有连接杆，所述连接杆的相对两端分别与所述第一临时封堵件、所述第二临时封堵件固定连接。
  7. 根据权利要求6所述的一种高合金管道的焊接缺陷修复结构，其特征在于，所述进气管贯穿所述第一临时封堵件，所述进气管贯穿所述第一临时封堵件的部分位于所述对口间隙与所述第一临时封堵件之间，所述进气管贯穿所述第一临时封堵件的部分设有多个氩气放气孔，所述进气管内部与所述氩气保护区之间通过多个所述氩气放气孔进行连通。
  8. 根据权利要求1-7中任意一项所述的一种高合金管道的焊接缺陷修复结构，其特征在于，所述第二临时封堵件上设有一个或多个排气孔。
PCT/CN2020/123543 2019-11-28 2020-10-26 一种高合金管道的焊接缺陷修复结构 WO2021103880A1 (zh)

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