A self-connecting quick-change joint with protection function

Abstract

The invention discloses an automatic connection quick-change connector with a protection function, comprising an anode connector assembly and a cathode connector assembly, wherein each of the anode connector assembly and the cathode connector assembly comprises a connector body and a one-way valve; a locating annular groove is formed in the outer periphery of the anode connector body; a plurality of radial through grooves are arranged in the cathode connector body; conical surfaces are arranged on the inner ends of the through grooves; locating steel balls are slidingly arranged in the through grooves; a sleeve and a balancing sleeve are sequentially arranged outside the cathode connector body from front to back; convex rings corresponding to the through grooves are arranged in the cathode connector body; annular grooves are arranged in the cathode connector body at the two sides of the convex rings; the rear end of the sleeve is connected with a hollow connecting seat; the balancing sleeve is located in the sleeve in front of the connecting seat; a step is arranged on the excircle of the anode connector body; a positioning spring is arranged between the step surface and the front end of the balancing sleeve; a balancing piston which is connected with the cathode connector body is also arranged in the balancing sleeve and the connecting seat; a hole which is used for communicating an inner hole of the cathode connector body with an inner cavity of the balancing sleeve in front of the balancing piston is formed in the cathode connector body. The automatic connection quick-change connector with the protection function has the advantages that the operation is simple, the connector is not easily damaged, automation of connection and separation can be realized, and the safety is good.

Description

technical field [0001] The invention relates to a quick-change joint, in particular to a quick-change joint for automatic connection of oil circuits. Background technique [0002] Quick-change joints are widely used in the connection of various oil and gas circuits. Usually, it includes a male joint assembly, a female joint assembly and a ferrule connecting the two. The male joint assembly includes a hollow male joint body, which is located on the male joint The one-way valve in the body is provided with a positioning ring groove on the outer circumference of the male joint body. The female joint assembly includes a hollow female joint body and a one-way valve located in the female joint body. The spools of the two one-way valves are adjacent to each other. Setting, the outer end of at least one spool is located outside its valve seat, and several steel balls are arranged in the female joint body in the ferrule; when connecting, push the ferrule back, push the male joint bod...

AI Technical Summary

Problems solved by technology

[0002] Quick-change joints are widely used in the connection of various oil and gas circuits. Usually, it includes a male joint assembly, a female joint assembly and a ferrule connecting the two. The male joint assembly includes a hollow male joint body, which is located on the male joint The one-way valve in the body is provided with a positioning ring groove on the outer circumference of the male joint body. The female joint assembly includes a hollow female joint body and a one-way valve located in the female joint body. The spools of the two one-way valves are adjacent to each other. Setting, the outer end of at least one spool is located outside its valve seat, and several steel balls are arranged in the female joint body in the ferrule; when connecting, push the ferrule back, push the male joint body into the female joint body, so that the steel ball The ball falls into the groove of the positioning ring, and then the ferrule is loosened to make it reset, and the two are connected through the steel ball. Push the ferrule to pull out the male connector body, so that the two are separated; the disadvantages of this quick-change joint are: 1) When connecting and separating, the ferrule needs to be operated, and two actions need to be performed, which is inconvenient to operate and difficult to realize the connection 2) In the connected state, if an abnormal external force is applied (the male joint assembly is subjected to a large pulling force), the male joint assembly and the female joint assembly cannot be separated automatically, which will not only easily damage the joint, but also cause misoperation , leading to accidents and poor safety

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