Adapter joint for small-bore gas/liquid pressure measurement

Abstract

The invention provides an adapting joint for measuring the pressure of a small-caliber gas / liquid pipeline. The adapting joint comprises an adapting-out end, a joint end and a middle part; the middle part is in transition connection with the adapting-out end and the joint end; the adapting-out end comprises an external threaded section; a sealing ring is mounted between the adapting-out end and a non-standard working medium outlet when the adapting-out end is assembled together with the non-standard working medium outlet; the joint end comprises an external threaded flared section; an external thread of the joint end is matched with an external sleeve nut; and a flared part of the joint end is matched with a spherical joint. The invention discloses the adapting joint for measuring the pressure of the small-caliber gas / liquid pipeline, the aperture (requiring to machine an internal thread) of the non-standard working medium outlet can be adapted into a form of a flared threaded joint in a standard way, so that a pressure measuring sensor is conveniently connected; and the adapting joint is particularly suitable for a pressure measuring pipeline of the small-caliber gas / liquid pipeline. The double-sealing design is adopted at an adapting port of the adapting joint, and a non-metal sealing element which is easily replaced is adopted, so that the adapting joint has the characteristics of highly-reliable sealing performance and simplicity in replacement.

Description

technical field [0001] The invention relates to an aerospace propulsion pipeline system, in particular to a small-diameter non-standard joint used in the pressure measurement of a gas / liquid circuit working medium, and specifically relates to an adapter joint for small-diameter gas / liquid circuit pressure measurement. Background technique [0002] At present, the pressure measurement interfaces in aerospace propulsion pipelines are all standard joints. However, in some specific cases, it is necessary to design a small-caliber adapter interface when a small-caliber non-standard form of interface needs to be measured. A non-standard joint can be converted into a standard joint, and the transition joint must have good sealing reliability. [0003] The adapter joint structure in the prior art is mainly in the form of a standard 60-degree welded nozzle and a spherical joint. The disadvantages are that the diameter is too large (≥ 4mm), and most of them are single-channel seals. T...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of pressure measurement of non-standard interface in the aerospace propulsion pipeline system, an adapter joint is designed, which can convert the non-standard interface into a standard pressure measurement interface, so as to measure the pressure of the working fluid

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