Elbow casting

Abstract

The invention discloses an elbow casting, and particularly relates to the field of pipeline equipment. The elbow casting comprises an elbow main pipe body, wherein an elbow outer protective pipe is arranged on the outer side of the elbow main pipe body, an elbow outer sheath is arranged on one side surface, far away from the elbow main pipe body, of the elbow outer protective pipe, an elbow liningembedding pipe is arranged on one side surface, far away from the elbow outer protective pipe, of the elbow main pipe body, an elbow lining pipe is arranged on one side surface, far away from the elbow main pipe body, of the elbow lining embedding pipe, elbow end protection frames are arranged at the two ends of the elbow main pipe body, the elbow main pipe body comprises a main structure pipe, an outer embedding pattern surface and an inner embedding pattern surface, and the outer embedding pattern surface is ground in the middle of the outer side surface of the main structure pipe. The elbow main pipe body is used for connecting the inner structure and the outer structure of the elbow casting, and meanwhile, the main compression resistance is provided, so that when the elbow casting isused, the elbow main pipe body can be matched with the structures connected to the two sides of the elbow main pipe body to jointly carry out compression resistance and tensile resistance.

Description

technical field [0001] The invention relates to the field of pipeline equipment, in particular to an elbow casting. Background technique [0002] The bent pipe is bent by a complete set of bending equipment, which is divided into two processes: cold simmering and hot pushing. No matter what kind of machinery and equipment and pipelines, most of them use bent pipes, mainly for oil, gas and liquid infusion. , engineering bridge construction, etc. [0003] In the prior art, the structure of elbow castings mostly exists in the form of a single straight tube, and the bending part has very poor compressive resistance when it is bent inward due to its structural characteristics, and its resistance to bending is very poor when it is bent outward. The pressure profile is very strong, and the means to change this situation are mostly research and innovation in technology, and the structure of elbows is mostly innovative with special-shaped structures. [0004] For example, the appli...

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Problems solved by technology

[0006] It can be seen from the above that there are very few innovative technologies to improve the compressive performance of the above-mentioned elbows by changing the structure, and there are many defects such as high technical level requirements and high equipment precision requirements in the way of process changes, which are not suitable for small and medium-sized factories. defect

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