Central distribution manifold with hermetically butt-connected screwed nipples

Abstract

A central distribution manifold with hermetically butt-connected screwed nipples comprises an intake manifold and screwed nipples. Each screwed nipple comprises a cambered nipple end, a threaded connection end and a nipple inner hole, wherein the nipple inner hole is formed in the center of the threaded connection end and the diameter of the cambered nipple end is equal to that of the intake manifold. Every screwed nipple is fitly butt-connected to the intake manifold through a butt camber of the corresponding cambered nipple end and is hermetically, fixedly and integrally welded to the manifold through a circular weld. The nipple inner holes of the intake manifold, corresponding to the screwed nipples are provided with air holes by drilling, thus the intake manifold is connected with the screwed nipples in a communicated manner. The central distribution manifold has the advantages that the distribution manifold can be fitly butt-connected with the screwed nipples firmly by welding, the screwed nipples can also be used as drill jigs for precision drilling on the distribution manifold, the quality of fit butt welding between the screwed nipples and the distribution manifold can be improved, all screwed nipples can be coplanar, and the defects that the screwed nipples are nonuniform and easily displaced are overcome.

Description

Technical field: [0001] The invention relates to an integrated device for connecting and distributing gas into households, in particular to a centralized gas distribution manifold component. Background technique: [0002] Piped gas has been widely used in many cities and towns in my country, and every household must be equipped with a metering gas meter during the connection and installation of the gas source into the household. At present, the gas meters of each household are connected through a centralized gas distribution manifold and a manual gas valve. The centralized gas distribution manifold includes an intake manifold and a threaded pipe joint, and the connection method is at a predetermined position of the intake manifold The butt hole for installing the threaded pipe joint is processed on the upper part, and then the threaded pipe joint is set in the butt joint hole, and finally the threaded pipe joint and the intake manifold are airtightly welded into one body by ...

AI Technical Summary

Problems solved by technology

To process several butt holes on the intake manifold, it is necessary to ensure the dimensional accuracy of the holes and ensure that the holes are in the same plane, which is very difficult, the processing efficiency is low, and the stability of the hole diameter is poor. When welding in the butt hole, the protruding length of the threaded pipe joint is different. When the size of the butt hole on the intake manifold is out of tolerance, the axes of the threaded pipe joints will not be in the same plane

At the same time, such a butt welding fixed structure will not only cause unstable welding quality, but also prone to false welding and air leakage defects, and the uneven length of threaded pipe joints will cause the installation position of the gas meter to be dislocated, which will directly affect the gas meter and gas meter. The uniformity of the height of the box

In the new community or the renovation of the old community, the technical index of the uniformity of the gas meter and the gas meter box is the key index of the assessment, and the existing gas meter centralized gas distribution integrated device is difficult to meet this technical requirement

After careful research by the applicant, the main reason is that the butt welding structure between the threaded pipe joint and the intake manifold is unreasonable

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