CN2257585Y - Unrestricted non-thrust internal press balance corrugation expansion joint - Google Patents

Abstract

The utility model belongs to an unrestricted non-thrust corrugated expansion joint, which is characterized in that two corrugate pipes both use omega-shaped corrugated pipes provided with pressure rings. A plurality of metal strips used for guiding are uniformly arranged among the corrugated pipes and a flow guide cylinder; a ring-cavity-shaped divider is provided with a stiffening rib plate. The utility model has the advantages of reasonable design, good stress state and good centering performance. The distance among guide supports can be adjusted to the maximum limit, the installation is convenient, and the construction cost is also reduced.

Description

Do not have in the no thrust of constraint and press the balanced type corrugated expansion joint

The utility model relates to the further improvement of pressure balance type corrugated expansion joint in the heat distribution pipeline.

In that heat distribution pipeline is built on stilts when laying, be the living thrust of cutting down output in reducing, press the balanced type heat compensating unit in often adopting, such as Chinese patent 93236074.2.Simple compact, the beautiful shape of its structural design, but with on the overall structure, that it shows is thin, rigidity is not enough.In addition, still need when it is installed shaft axis is transferred to pipe centerline, obviously cumbersome, and on-the-spot difficult check.

The purpose of this utility model be to provide a kind of good rigidly, good to neutrality, construction is simple and reliable, practical pressure balance type corrugated expansion joint on the engineering.

Technical solution of the present utility model is as follows: in the corrugated expansion joint that comprises preceding pipe, work bellows, connecting tube, balance bellows, end socket baffle plate, ring cavity shape ram's horns, back pipe, locate to have the metal bar that the guide shell outer surface that supplies the hole that medium passes through evenly is provided with some guiding usefulness between pipe and the end socket baffle plate in the hole of corresponding connecting tube being connected in before; Around above-mentioned metal bar be connected in before the pipe and connecting tube between the work bellows and around above-mentioned metal bar be connected between end socket baffle plate and the connecting tube the balance bellows by the band bearing ring Ω shape bellows make; In the ring cavity shape ram's horns some deep floors are set.For making the stressed the optimum state that is in of expansion joint, end socket baffle plate and back Guan Yike design are curve form.

Advantage of the present utility model is that deep floor makes the structural entity rigidity strengthen greatly, and the Ω shape bellows of band bearing ring has avoided the U-shaped bellows to contact with the point of inner sleeve, guarantees the reliability Work of compensating element.In addition, the metal gib block between two bellowss and the guide shell has been avoided the direct friction of inner sleeve and connecting tube, the centering in the time of can guaranteeing work.Because the utility model stress is preferable, can guarantee not unstability of expansion joint work, thereby compensator has the custom of a minimum range to retrain apart from fixed support in the piping design construction, can not consider, and can adjust the distance between guiding trestle to greatest extent.This greatly facilitates construction, and to reducing engineering cost, all there is very big meaning the reduction of erection time.In a word, but the utility model automatic guide, the pressure-bearing height, flow resistance is little, and is reasonable in design, practical.Be particularly suitable for doing heavy caliber, the compensation device in the high heat distribution pipeline of pressure-bearing.

See embodiment below in conjunction with accompanying drawing.

Fig. 1 is the utility model structural representation.Wherein, 1 for preceding pipe, 2 for flange plate, 3 for give transfer bellows to the adjustment common house centipede bar of capacity rating, 4 for Ω shape work bellows, 5 for bearing ring, 6 for the connecting ring that has through hole, 7 for vent, 8 for the guide shell that has the hole of passing through for medium, 9 copper bars for guiding usefulness, 10 for deep floor, 11 for outer connecting body, 12 for interior connecting body, 13 for Ω shape balance bellows, 14 for guide shell is welded on intensive aspect on the end socket baffle plate, 15 for end socket baffle plate, 16 for managing the back.

Claims (2)

1, a kind of interior swollen joint that rises of balanced type ripple of pressing, comprising: preceding pipe, work bellows, connecting tube, balance bellows, end socket plate washer, ring cavity shape ram's horns, back pipe is characterized in that:

A, the guide shell outer surface that has the hole that the confession medium passes through before being connected between pipe and the end socket plate washer in place, the hole of corresponding connecting tube evenly are provided with the metal bar of some guiding usefulness;

B, around above-mentioned metal bar be connected in before the pipe and connecting tube between the work bellows and around above-mentioned metal bar be connected between end socket plate washer and the connecting tube the balance bellows by the band bearing ring Ω shape bellows make;

In c, the ring cavity shape ram's horns some deep floors are set.

2, the interior balanced type corrugated expansion joint of pressing according to claim 1 is characterized in that end socket baffle plate and back pipe are curve form.

Images