SU767446A1

SU767446A1 - Thick-walled steeply-curved branch

Info

Publication number: SU767446A1
Application number: SU741995592A
Authority: SU
Inventors: Юрий Константинович Павлов
Priority date: 1974-02-13
Filing date: 1974-02-13
Publication date: 1980-09-30

Description

Изобретение относится к гнутым участкам трубопроводов и может быть использовано в различных трубопроводах, работающих под большим давлением.The invention relates to bent sections of pipelines and can be used in various pipelines operating under high pressure.

Известна конструкция толстостенного крутоизогнутого отвода с постоянным проходным ⁵сечением и с плавным изменением размеров толщиньГ стенок вогнутой и наружной стороны отвода от торцов к средней его части [1].A known design of a thick-walled steeply curved bend with a constant passage ⁵ section and with a smooth change in size of the thicknesses of the walls of the concave and outer sides of the bend from the ends to its middle part [1].

Недостатком этой конструкции отвода яв- _fляется невозможность эксплуатации его при высоких⁰ давлениях.A disadvantage of this construction retraction yav- _f wish to set up the impossibility of operating at high pressures of ^0.

Целью изобретения является повышение надежности при повышенном внутреннем давлении. ₁₅ The aim of the invention is to increase reliability with increased internal pressure. _fifteen

Поставленная цель достигается тем, что толщина стенок выполнена с увеличением от торцов к средней части по вогнутой стороне и с уменьшением — по наружной стороне изгиба.The goal is achieved in that the wall thickness is made with an increase from the ends to the middle part along the concave side and with a decrease on the outside of the bend.

На фиг. 1 показан отвод в разрезе; нафиг 2 сечение А-А на фиг. 1; на фиг. 3 - сечение Б-Б на фиг. 1. ;In FIG. 1 shows a cross-sectional bend; see FIG. 2, section AA in FIG. 1; in FIG. 3 is a section BB in FIG. 1. ;

Толстостенный крутоизогнутый отвод 1 с постоянным проходным сечением выполнен с увеличением от торцов 2 к средней части 3 , по вогнутой стороне 4 и с уменьшением по наружной стороне 5 изгиба.A thick-walled steeply curved bend 1 with a constant bore is made with an increase from the ends 2 to the middle part 3, along the concave side 4 and with a decrease on the outer side 5 of the bend.

Такое -конструктивное исполнение, отвода обеспечивает не только условия приварки отвода к прямой трубе, но и обеспечивает равенство площади проходного сечения отвода при сохранении равнопрочности его стенок, резко снижает гидравлические потери в трубопроводе, повышает производительность установок и улучшает товарный вид изделий. Кроме того, предлагаемая конструкция технологична. Отводы могут быть получены при незначительных трудозатратах штампосварным способом или различными существующими способами гибки труб при незначительном их усовершенствовании.Such a design, bend provides not only conditions for welding the bend to the straight pipe, but also ensures equality of the bore of the bend while maintaining the equal strength of its walls, dramatically reduces hydraulic losses in the pipeline, increases the productivity of installations and improves the presentation of products. In addition, the proposed design is technological. Bends can be obtained with minor labor costs by stamp-welding or various existing methods of bending pipes with minor improvement.

Claims

The invention relates to curved sections of pipelines and can be used in various pipelines operating under high pressure. The known construction of a thick-walled steeply-bent elbow with a constant flow section and with a smooth change in the dimensions of the wall thickness of the concave and outer sides of the outlet from the ends to the middle part 1. The disadvantage of this design of the outlet is the impossibility of its operation at high pressures. The aim of the invention is to increase reliability with increased internal pressure. The goal is achieved by the fact that the thickness of the walls is made with an increase from the ends to the middle part on the concave side and with a decrease - on the outer bend. FIG. 1 Shown in the section; in FIG. 2, section A-A in FIG. one; in fig. 3 is a section BB in FIG. one.; Thick-walled steeply-bent outlet 1 with a straight flow section D- is made with an increase from the ends 2 to the middle part 3 on the concave side 4 and with a decrease on the outside. 5 bend. Such a "constructive design, removal not only ensures the conditions of welding the removal to the straight pipe, but also ensures equality of the outlet cross-sectional area while maintaining the equal strength of its walls, sharply reduces hydraulic losses in the pipeline, improves the productivity of installations and improves the presentation of the products. In addition, the proposed design is technologically advanced. Elbows can be obtained with little effort using the die-welded method or with various existing methods of bending pipes with a slight improvement. Claims of the Invention Thick-walled steeply curved outlet with a constant passage through passage and with a smooth change in the dimensions of the wall thickness of the fuse and the outer side of the outlet from the ends to the middle part thereof, characterized in that, in order to increase reliability with increased internal pressure, the walls of the wall did not meet the same pattern. parts on the concave side and with a decrease on the outer side of the exile.

Sources of information, taken into account in the examination 1. US patent N 1960557, cl. 285-179, the Republican. 1934.