CN-121977124-A - High-performance quick-detachable buckling type hose joint assembly

CN121977124ACN 121977124 ACN121977124 ACN 121977124ACN-121977124-A

Abstract

The invention discloses a high-performance quick-detachable buckling type hose joint assembly, belongs to the technical field of pipeline connection, and is suitable for quickly replacing damaged metal pipelines in the field under a complex severe environment. Aiming at the technical problems of insufficient strength, poor sealing performance and complex disassembly and assembly process of the existing hose joint, the assembly comprises a joint, a joint core, a sleeve nut, a hose and a flat nozzle; the outer peripheral surface of the joint core is provided with a groove structure formed by combining a saw tooth type structure and a circular type structure, the inner rubber layer of the hose is buckled and embedded into the combined groove to form a plurality of seals, the inner peripheral surface of the sleeve is provided with a circular groove, the reinforcing layer of the hose is buckled and embedded into the circular groove, and the ends of the joint core and the sleeve are respectively provided with a rounding structure, so that the hose rubber layer is prevented from being damaged in the buckling and pressing process; the hose connector assembly has high strength, good sealing effect and convenient disassembly and assembly, can effectively prolong the service life of the assembly, can realize the quick repair of a pipeline system, and ensures the stable operation of the pipeline system in a complex severe environment.

Inventors

CHENG CHENG
ZHOU BIAO
LU JUNJIE
ZHANG ZIXUAN
YU LE
GUO XUNZHONG
CUI QIANLIN

Assignees

南京航空航天大学
国营芜湖机械厂

Dates

Publication Date: 20260505
Application Date: 20260302

Claims (10)

1. The high-performance quick-disassembly buckling type hose joint assembly is characterized by comprising a joint, a joint core, a sleeve, an outer sleeve nut, a hose and a flat nozzle; The outer peripheral surface of the joint core is provided with a combined groove consisting of a sawtooth-shaped groove and a ring-shaped groove, the combined groove can be embedded into an inner adhesive layer and an armor layer of a hose, and the armor layer is a specific form of a hose reinforcing layer; the sleeve is sleeved on the outer side of the joint core, and the inner peripheral surface of the sleeve is provided with an annular groove; The hose is formed by two parts of an inner adhesive layer and a reinforcing layer, and the hose is directly inserted into the sleeve and then is subjected to one-time buckling forming, namely the metal joint and the hose are firmly connected into a whole through the radial extrusion action of a set of die; One end of the flat nozzle is aligned with the end part of the joint core, the other end of the flat nozzle is aligned with the inner end of the sleeve nut, and the flat nozzle fastens the sleeve nut and the joint core into an integrated structure.
2. The hose coupling assembly according to claim 1, wherein the end of the coupling core in contact with the hose inner glue layer is provided with a rounded corner structure, and the end of the sleeve in contact with the hose is also provided with a rounded corner structure.
3. The hose connector assembly of claim 1, wherein the ratio of the effective crimping length of the connector core to the overall length of the sleeve is between 0.5 and 0.8, the effective crimping length being the mating length of the composite groove of the connector core and the hose inner adhesive layer, the hose inner adhesive layer in the length region being permanently plastically deformed by crimping and mechanically interlocked with the composite groove of the connector core.
4. The hose connector assembly of claim 1, wherein the number of composite grooves of said connector core is 3-15, the interval between adjacent two composite grooves is 0.8-3mm, and the number of annular grooves of said sleeve is 3-15.
5. The hose coupling assembly of claim 1, wherein the angle between the hypotenuse and the bottom edge of the serration groove is 90 ° -150 °, the depth of the serration groove is 0.3-1.0mm, and the width of the serration groove is 0.8-2mm, and the depth and width of the annular groove are identical to the serration groove.
6. The hose coupling assembly of claim 1, wherein the annular groove of the sleeve has a depth of 0.3-1.0mm and a width of 0.8-2mm, and wherein the annular groove is embedded with an elastomeric seal, and wherein the elastomeric seal is an O-ring of nitrile rubber or fluororubber.
7. The hose fitting assembly according to claim 1, wherein the threaded mating surface of the jacketing nut and the fitting is provided with a locking structure or a sealing coating, wherein the locking structure is a locking washer or a thread locking glue, and the sealing coating is a polytetrafluoroethylene coating or an epoxy resin sealing coating.
8. The hose coupling assembly of claim 1, wherein the material of the coupling core, sleeve, jacketing nut and flat nipple is stainless steel, aluminum alloy or titanium alloy.
9. The hose connector assembly according to claim 1, wherein a self-locking structure is arranged between the sleeve and the connector core, the self-locking structure is a structure that a boss on the inner wall of the sleeve is matched with a clamping groove on the outer wall of the connector core, and the boss is clamped into the clamping groove after being buckled to further strengthen mechanical interlocking, improve the connecting strength of the assembly and enhance the sealing performance of the connector.
10. The hose connector assembly of claim 1, wherein the combined groove of the connector core is in close contact with the hose inner adhesive layer, and the annular groove of the sleeve is in close contact with the reinforcing layer of the hose, and forms a radial mechanical seal and an axial structural limit after buckling.

Description

High-performance quick-detachable buckling type hose joint assembly Technical Field The invention relates to the technical field of pipeline connection, in particular to a high-performance quick-detachable buckling type hose joint assembly. Background In special application scenes such as complex severe environments, metal pipelines are easy to damage due to factors such as impact, vibration and extreme temperature, and if the metal pipelines cannot be replaced in time, the whole pipeline system is invalid, so that the equipment combat efficiency or the logistics guarantee capability is affected. The hose joint assembly for replacing the pipeline has three main core defects of insufficient strength, difficulty in bearing extreme mechanical stress, high pressure and severe vibration in a battlefield environment, easiness in loosening or breaking of a connecting part, poor sealing performance, frequent liquid or gas leakage problems, easiness in causing energy waste, system failure and even safety risks, and complex disassembly and assembly flow, needs special tools and is time-consuming to operate, and the emergency requirement of 'quick repair' of the battlefield cannot be met. Therefore, developing a hose connector assembly that combines high strength, good tightness and quick assembly and disassembly characteristics becomes a key to solving the problem of emergency replacement of battlefield pipes. Disclosure of Invention The invention aims to provide a hose joint assembly with high strength and quick disassembly so as to solve the problem of the existing hose joint assembly. The technical scheme for solving the technical problems is as follows: the utility model provides a high performance quick assembly disassembly's withhold formula hose connector subassembly, its core structural advantage embodies in the design is withheld in the integration of joint core and telescopic, through the accurate optimization to groove structure, withhold parameter, dismouting structure, realizes the high strength, high leakproofness and the quick assembly disassembly characteristic of subassembly. The connector core and the sleeve are designed with groove structures, and the number, shape, size and interval of the grooves determine the connection strength and sealing performance of the hose assembly to a certain extent. The number of grooves of the joint core and the sleeve is increased, the effective sectional area of the hose assembly can be reduced to a small extent, and the overall connection strength of the joint is further reduced, but the reasonable increase of the number of the grooves can increase the contact area with the hose adhesive layer, and the mechanical interlocking effect is improved, so that the sealing performance is improved, if the number of the grooves is too large, uneven stress and disturbance distribution of the hose adhesive layer can be caused, and the sealing performance is reduced, so that the number of the grooves needs to be controlled in a reasonable range. The total length of the sleeve directly influences the buckling effect and the connection strength of the hose connector assembly, namely, the sleeve is too short and cannot provide enough buckling contact area, so that the binding force between the hose and the connector is insufficient, failure modes such as pulling out of the hose and the like easily occur when tensile load is applied, the length of the sleeve is properly increased, the buckling bonding area between the hose and the connector can be effectively increased, the integral connection strength is improved, pulling out of the hose is prevented, when the length of the sleeve is moderate, the tight fit between the hose and the connector can be ensured, the inner adhesive layer and the reinforcing layer of the hose are respectively fully embedded with grooves of the connector core and the sleeve in the buckling process, so that the sealing performance is improved, if the sleeve is too long, uneven buckling pressure distribution is caused, and if the sleeve is too short, the tight fit is insufficient, the tight fit between the hose and the connector is influenced, and poor sealing is caused. The shape of the groove has key influence on the strength and sealing performance of the hose joint assembly, the sawtooth-shaped groove can provide larger deformation and buckling amount, so that the adhesive layer and the armor layer of the hose can be better embedded into the groove during buckling, the connection strength is improved, and meanwhile, the sawtooth-shaped groove increases the contact area and friction between the hose and the joint, and the sealing performance can be effectively improved. For the hose joint with higher connection strength, the groove of the joint core is designed into a combined structure of a zigzag type and a ring type, the groove type allows larger deformation and buckling amount, the adhesive layer and the armor layer of the hose can be more tightly e