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A kind of stainless steel and pipe joint technology, applied in the direction of sealing surface connection, pipe/pipe joint/pipe fitting, through components, etc., can solve the problems of water leakage, insufficient gripping force, inability to tighten pipe joints, etc., and achieve the effect of reasonable mechanical structure.
Inactive Publication Date: 2011-07-06
杨伟津
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After many tests, when the material of the joint and the sealing ring is changed from copper to stainless steel, the joints of the pipe fittings will not be tightened, the grip force is insufficient and the sealing performance is not good, resulting in loose joints, water leakage (air leakage), and shock resistance. Problems such as reduction, unable to meet the technical requirements of locking and sealing
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[0021] The present invention is described in further detail by the following examples.
[0022] see Figure 1~Figure 2 As shown, a stainless steel hard-sealed pipe joint is composed of a stainless steel joint body 1 , a stainless steel nut 2 and a stainless steel sealing ring 3 . The two ends of the joint body 1 are provided with external threads and a socket 4, the outer end of the inner wall 5 of the socket 4 is a conical surface, the diameter of the outer end of the conical surface is greater than the diameter of the inner end, and its slope α=0.1 0 ~8 0 Angle, the inward extension part 6 of the conical surface is a cylindrical surface. There is an internal thread in the cavity of the nut 2, and a relief groove is provided between the thread and the bottom. The bottom of the cavity is flat, and a hole is opened in the middle to become the end cover of the nut 2. The external thread on the end is connected. A conical cylinder-shaped sealing ring 3 is installed in the cav...
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Abstract
The invention discloses a stainless steel hard-seal pipe joint, which consists of a stainless steel joint main body, a stainless steel nut, and a stainless steel seal ring; the inner cavities of the two end parts of the joint main body are conical surfaces; the parts of the conical surfaces extending to the inside are cylindrical surfaces to form faucets of the two end parts of the joint main body; the diameter of the outer end of the conical surface is larger than the diameter of the inner end thereof; outer threads are arranged at the two end parts of the joint main body; inner threads are arranged in a nut cavity; the nut is provided with an end cover with an opening in the middle; the nut is connected with the threads at the two ends of the joint main body; and the stainless steel seal ring is arranged in an empty cavity formed between the faucets of the two end parts of the joint main body and the inner cavity of the nut as well as the outer wall of a connected stainless steel pipe workpiece.
Description
technical field [0001] The invention relates to the technical field of sealed connection between metal pipes and joints, in particular to a stainless steel hard-sealed pipe joint. Background technique [0002] Existing metal pipe connection methods are generally various connection methods such as compression type, compression type, ferrule type, and groove clamp type. Although these connection methods and their special installation tools are different, they all have a common feature, that is, they all need to use rubber-like elastomer sealing materials (such as raw material belts, anaerobic adhesives, rubber rings, tetrafluoroethylene gaskets, etc.) To fill the gap between pipes and fittings to achieve airtight or watertight effect. Over time, these rubber-like sealing materials will be affected by external environmental factors (mainly sunlight, oxygen, ozone, heat, water, electricity, mechanical stress, high-energy radiation, industrial gases, sea water, salt spray, mold,...
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Application Information
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