CN202868184U

CN202868184U - A pipeline compensator

Info

Publication number: CN202868184U
Application number: CN 201220325690
Authority: CN
Inventors: 李秦岭; 张翠峰; 刘超
Original assignee: Xian Aircraft Design and Research Institute of AVIC
Current assignee: Xian Aircraft Design and Research Institute of AVIC
Priority date: 2012-07-06
Filing date: 2012-07-06
Publication date: 2013-04-10
Anticipated expiration: 2022-07-06

Abstract

The utility model is suitable for the bleed air pipeline system of aviation and spacecraft engines and other pipeline systems that need to be compensated. The pipeline compensator is composed of pipe joint 1, bellows 2, pull rod 3, pipe joint 4, screw plug 5, bracket 6, bracket 7 and nut 8, wherein bracket 6 and bracket 7 are respectively welded to the two ends of the pipeline compensator The inner surface of the joint; one end of the tie rod 3 is a spherical structure, and the diameter of the spherical structure is larger than the diameter of the tie rod. After passing through the center hole of the bracket 7 at the other end of the pipeline compensator, fix it with a nut 8, the tie rod 3 can slide along the axis in the center hole of the bracket 7, and the screw plug 5 presses one end of the spherical structure of the tie rod 3 to the ball socket of the bracket 6 Inside; the corrugated pipe 2 is a metal spiral corrugated pipe, which is welded with the pipe joints 1 and 4 at both ends, and has the ability to stretch, compress and bend.

Description

A kind of compensation of pipeline device

Technical field

The utility model is applicable to aerospace vehicle engine bleed pipe-line system and other pipe-line system that need to compensate.

Background technique

The effect of compensation of pipeline device mainly is owing to expanding with heat and contract with cold and pipeline axial displacement compensation and the radial angle compensation that causes being installed for pipeline.

At present both at home and abroad the compensation of pipeline device that adopts of the High Temperature High Pressure pipeline on the aircraft is generally: 1. with the metal bellows of outside link formula, have axial compression and stretch compensation function, has simultaneously the radial angle compensate function, but the angle compensation ability is less, generally be not more than 5 °, its outside link has 3～4 usually, and its overall sizes is larger, weight is larger, has limited its angle compensation ability; 2. the metal bellows of interior hinge is assembled by 9 kinds of 12 spare parts combinations such as bellows, convex joint, female fitting, joints sleeve, stiffening ring, hinged overcoat, hinged kink, hinged inner sleeve, inner sleeve, its volume less but complex structure, install to cooperate and require height, assembly technology requires high, and its weight and manufacture cost are also high; 3. universal joint, it only has the angle compensation function; 4. have the compensator of tensile and compress compensation, but do not have the angle compensation function;

The model utility content

The purpose of this utility model is: a kind of volume is little, and is simple in structure, and lightweight compensation of pipeline device not only has axial compression and stretch compensation function, also has the angle compensation function, can satisfy simultaneously the multiple compensation requirement of pipe-line system.

The technical solution of the utility model is: the utility model is a kind of compensation of pipeline device, described compensation of pipeline device is comprised of pipe joint I 1, bellows 2, pull bar 3, pipe joint II 4, plug screw 5, support I 6, support II 7 and nut 8, its support I 6 is comprised of axle sleeve and outside support blade, axle sleeve one stomidium directly is slightly larger than the bar footpath of pull bar 3, this end inboard is a ball-and-socket, and the other end of axle sleeve is screw thread; Support II 7 is comprised of axle sleeve and outside support blade, and the aperture of axle sleeve is slightly larger than the bar footpath of pull bar 3; Pull bar 3 one ends are spherical structure, the diameter of spherical structure is greater than the pull bar diameter, spherical structure is fixed in the ball-and-socket of compensation of pipeline device one end support I 6, the other end of pull bar 3 passes behind the center hole of support II 7 axle sleeves fixing with nut 8, pull bar 3 can slide along axis in support II 7 center holes, and plug screw 5 is pressed on spherical structure one end of pull bar 3 in the ball-and-socket of support I 6; Pipe joint I 1, pipe joint II 4 are with the straight-run of pipe section; Bellows 2 is elastic bellows, and two ends are connected with pipe joint I 1, pipe joint II 4 outer surfaces respectively.

The utility model has the advantages that: the utility model adopts draw-in bar formula metal bellows structure, it is large to have abandoned outside link formula compensation of pipeline device overall sizes, the shortcoming of Heavy Weight, interior hinge formula compensation of pipeline device complex structure, machining accuracy and the demanding shortcoming of assembly technology have been abandoned, combine the advantage of Typical Foreign compensation of pipeline device, be a multi-functional formula compensation of pipeline device, not only have little, simple in structure, the lightweight characteristics of overall sizes, and its angle compensation ability can improve significantly.

Description of drawings

Fig. 1 is the structural representation of compensation of pipeline device;

Fig. 2 is the structure shaft side figure of compensation of pipeline device;

Wherein 1 is the pipe joint I, and 2 is bellows, and 3 is pull bar, and 4 is the pipe joint II, and 5 is plug screw, and 6 is the support I, and 7 is the support II, and 8 is nut.

Embodiment

Please in conjunction with Fig. 1, Fig. 2, the compensation of pipeline device that the utility model relates to is comprised of pipe joint I 1, bellows 2, pull bar 3, pipe joint II 4, plug screw 5, support I 6, support II 7 and nut 8, it is characterized in that support I 6 is comprised of axle sleeve and outside support blade, axle sleeve one stomidium directly is slightly larger than the bar footpath of pull bar 3, this end inboard is a ball-and-socket, the spherical structure that guarantees pull bar 3 can rotate in the axle of support I 6, and the axle sleeve the other end is screw thread; Support II 7 is comprised of axle sleeve and outside support blade, and the aperture of axle sleeve is slightly larger than the bar footpath of pull bar 3; Support I 6, support II 7 are welded on respectively the internal surface of the pipe joint at compensation of pipeline device two ends; Pull bar 3 one ends are spherical structure, and the diameter of spherical structure is greater than the pull bar diameter, and spherical structure is fixed in the ball-and-socket of compensation of pipeline device one end support I 6; The other end of pull bar 3 passes behind the center hole of support II 7 fixing with a nut 8, and pull bar 3 can slide along axis in support II 7 center holes, and plug screw 5 is pressed on pull bar 3 spherical structures one end in the ball-and-socket of support I 6; Pipe joint I 1, pipe joint II 4 are with the straight-run of pipe section, and the length of straight length is greater than the width of blade of support I 6, support II 7; Bellows 2 is metal bellows, and weld with the pipe joint outer surface respectively at two ends.

In addition, according to the needs of as installed environment, the quantity of the support I 6 in the pipe joint, support II 7 support blades is no less than 2.

Claims

1. A pipeline compensator, the pipeline compensator consists of pipe joint I (1), bellows (2), pull rod (3), pipe joint II (4), screw plug (5), bracket I ( 6), bracket II (7) and nut (8), characterized in that: bracket I (6) is composed of a shaft sleeve and an external support blade, the diameter of one end of the shaft sleeve is slightly larger than the rod diameter of the tie rod (3), the end The inner side is a ball socket, and the other end of the shaft sleeve is threaded; the bracket II (7) is composed of the shaft sleeve and the outer support blade, and the hole diameter of the shaft sleeve is slightly larger than the rod diameter of the pull rod (3); one end of the pull rod (3) is Spherical structure, the diameter of the spherical structure is larger than the diameter of the tie rod, the spherical structure is fixed in the ball socket of the bracket I (6) at one end of the pipeline compensator, and the other end of the tie rod (3) passes through the center hole of the bushing of the bracket II (7) Fix it with a nut (8), the tie rod (3) can slide along the axis in the center hole of the bracket II (7), and the screw plug (5) presses one end of the spherical structure of the tie rod (3) into the ball socket of the bracket I (6) inside; pipe joint Ⅰ (1), pipe joint Ⅱ (4) has a straight pipe section; bellows (2) is an elastic bellows, and its two ends are respectively connected to surface connection. the

2. A pipeline compensator according to claim 1, characterized in that the number of supporting blades of bracket I (6) and bracket II (7) is not less than two. the

3. A pipeline compensator as claimed in claim 1 or 2, characterized in that: bracket I (6), bracket II (7) are respectively welded to the pipe joint I (1) and pipe joint at both ends of the pipeline compensator Inner surface of joint II (4). the

4. A pipeline compensator according to claim 1, characterized in that: the length of the straight pipe section of pipe joint I (1) and pipe joint II (4) is longer than that of support I (6) and support II (7). blade width. the