Mountable and dismountable tube socket gas protection cover
A technology of protective cover and seat gas, which is applied in the direction of providing/removing protective gas devices, welding accessories, etc., which can solve problems such as welding deformation, achieve high gas sealing performance, high versatility and economy, and facilitate large-scale use Effect
Active Publication Date: 2015-05-13
SHANGHAI BOILER WORKS
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Problems solved by technology
[0003] The technical problem to be solved by the present invention is to provide a detachable pipe seat gas protection cover that ensures the welding quality of pipe joints, has high versatility and economy, and solves the problem that welding is easy to occur at the welding place of the fixed pipe seat gas protection cover. Deformation, for header pipe joints of different calibers, it is necessary to be equipped with gas shields of various specifications for replacement
Method used
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Embodiment Construction
[0026] In order to make the present invention more comprehensible, preferred embodiments are described in detail below with accompanying drawings.
[0027] The present invention is a detachable tube seat gas shield, such as Figure 3-Figure 4 As shown, it includes an outer cover body 3, a sealing ring 4, a positioning ring 5, and a screw 6. The outer cover body 3, the sealing ring 4, and the positioning ring 5 are all designed with internal / external threads, and the parts are screwed and fixedly matched and connected by threads.
[0028] Such as Figure 5-Figure 6 As shown, the top of the outer cover body 3 has external threads for connecting with the sealing ring 4 . There are many gas delivery pipes 3-1 (4 gas delivery pipes are designed in the present embodiment) welded in the middle part of the outer cover body 3 to ensure the airtightness of the weld seam. The bottom of the outer cover body 3 is in the shape of an arc (the radius of the arc is: R1), which is fitted wit...
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The invention discloses a mountable and dismountable tube socket gas protection cover. The cover is characterized in that an outer cover body is included, a sealing ring is arranged in the outer cover body and connected with the outer cover body, and a positioning ring is arranged in the sealing ring and connected with the sealing ring. The cover effectively avoids poor air feeding in partial areas caused by welding deformation, ensures argon to be output uniformly in the circumferential direction, has high air sealing performance, effectively ensures the welding quality of pipe connectors, is suitable for pipe connectors with different specifications and sizes, and has high universality and economical efficiency. The structure of part design is simple, the manufacturing cost is low, the operation of mounting and dismounting is convenient, and large-scale using in a manufacturing shop is facilitated.
Description
technical field [0001] The invention relates to a tube seat gas protection cover, in particular to a detachable tube seat gas protection cover. Background technique [0002] At present, when the boiler header is welding the inner hole argon arc welding pipe joint, the workshop usually uses a fixed pipe seat gas shield (this tool is used to transport argon to protect the inner wall of the pipe joint from forming the weld seam). The tube seat gas shield used in the workshop is a fixed design structure (such as figure 1 As shown), the cover body 1 and the inner ring 2 in the fixed tube seat gas shield are connected by welding, and welding deformation is easy to occur at the welding place. Therefore, the air supply of this kind of device is unstable during use, and the welding defect rate of the pipe joint is relatively high, which affects the product quality. Moreover, for header pipe joints of different calibers, it is necessary to be equipped with gas shields of various spe...
Claims
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IPC IPC(8): B23K9/32
CPCB23K9/325
Inventor 陈力姜建锋陆英豪吴利飞杨强
Owner SHANGHAI BOILER WORKS