CN201748078U - Sleeve compensator - Google Patents

Abstract

The utility model discloses a sleeve compensator which comprises a connecting pipe, an outer pipe, a baffle ring, filling, a gland, a bolt and an inner pipe. An inner hole at the left end of the outer pipe is connected with the connecting pipe in a sealing way to form a casing. The inner pipe is arranged in the casing; two ring shoulders are arranged on the outer wall at the left end part of the inner pipe at intervals and in clearance fit with the inner hole of the outer pipe directly; the baffle ring is fixedly connected with the inner wall in the middle section of the outer pipe to form an inner pipe axial position limiting structure; and the filling is plugged and loaded next to the baffle ring. The gland is sleeved on the outer wall of the inner pipe with clearance and connected with the outer wall of the inner pipe through the bolt to form a sealing shaft adjustable structure. The sleeve compensator has the advantages that the two ring shoulders are arranged outside the inner wall at intervals, the structure is simple, the manufacture difficulty is not increased, the fit area between the inner pipe and the inner hole of the outer pipe is effectively increased, the movable guiding performance of the inner pipe is improved, the balance quality of relative motion is improved obviously, and lateral abrasion of the inner pipe is not easy to occur, so that a sealing structure can keep good sealing performance for a long time. The utility model is suitable for the structural improvement of sleeve compensators in various specifications.

Description

Sleeve expansion joint

Technical field

The utility model relates to a kind of pipe safety device, and specifically, the utility model relates to a kind of sleeve expansion joint.

Background technique

Sleeve expansion joint is that a kind of structure is simple relatively, the pipe safety device that voltage endurance capability is superpower.The sleeve expansion joint that is installed in the pipe network mainly compensates the distortion that causes because of the medium physical change by the inner and outer pipes relative movement, to reach internal stress and the axial force that reduces or eliminate institute's pipe arrangement net.The sleeve expansion joint failure mode of prior art and the failure mode of other type of conduits compensator are different, and its main failure forms is not a problem of withstand voltage, but leakage problem.The sleeve expansion joint main component is the interior pipe and the outer tube of phase fit, and the outer shroud shoulder by inner tube portion is slidingly matched between the two.Prior art is a monocycle shoulder structure, and its axial dimension is shorter relatively, and steering capability is not good enough, in causing the motion of the relative outer tube of pipe stable inadequately, side wear easily takes place, if the ring shoulder wearing and tearing of inner tube portion overflow, must worsen air-proof condition and leak.

The model utility content

The utility model is primarily aimed at the deficiency of prior art inner tube portion monocycle shoulder structure, a kind of sleeve expansion joint with leading role is proposed, interior pipe in this structure is provided with the dicyclo shoulder, inner and outer pipes cooperates the section axial dimension long, compensating motion is steady, avoid taking place side wear, improved air-proof condition from structure.

The utility model is achieved through the following technical solutions technical goal.

Sleeve expansion joint, it comprises adapter, outer tube, baffle ring, filler, gland, bolt and interior pipe.Described outer tube is the straight tube member that is provided with the outward flange limit, and its left end is tightly connected to take over and constitutes housing.Pipe is similarly the straight tube member in described, direct and the outer pipe orifice Spielpassung of left part peripheral hardware ring shoulder, baffle ring is fixedlyed connected the interior tubular axis of formation to limit structure with outer tube stage casing inwall, be close to baffle ring right side plug filling material, outer wall of inner tube gap suit gland also connects into axial adjustable sealing configuration by bolt.Its improvements are: peripheral hardware two wide and spaced ring shoulders in pipe left part in described.

In the said structure, interval 〉=list only encircles the width of shoulder between two wide ring shoulders of interior pipe left part peripheral hardware.

The utility model compared with prior art has following good effect:

1, the external dicyclo shoulder of interior pipe is simple in structure, does not increase manufacture difficulty;

2, the external ring shoulder separately of interior pipe effectively increases the area that cooperates with outer pipe orifice, has improved interior pipe mobile guide performance, significantly improves the balance of relative movement, and the difficult generation of interior pipe side wear makes sealing configuration keep excellent sealing performance for a long time.

Description of drawings

Accompanying drawing is a structural representation of the present utility model.

Embodiment

The utility model is described in further detail with reference to the accompanying drawings and in conjunction with the embodiments below.

Sleeve expansion joint shown in the drawings, it comprises adapter 1, outer tube 2, baffle ring 3, filler 4, gland 5, bolt 6 and interior pipe 7.Described outer tube 2 is for being provided with the straight tube member on outward flange limit, and its left end is tightly connected and takes over 1 formation housing.Pipe 7 in housing is built-in, interior pipe 7 is similarly the straight tube member, its left part outer wall be provided with two wide and ring separately shoulders 7.1 directly with outer tube 2 endoporus Spielpassung, baffle ring 3 is fixedlyed connected pipe 7 axial limiting structures in the formation with outer tube 2 stage casing inwalls, be close to baffle ring 3 right flank plugs and load and expect 4.In pipe 7 outer wall gap suit glands 5 and connect into seal shaft to adjustable structure by bolt 6.Present embodiment is the product of DN 500mm bore, and pipe 7 left end outer walls are provided with 1.5 times of width that are spaced apart single only ring shoulder 7.1 between two ring shoulders 7.1 in it.With this understanding, in pipe 7 improve 250% with the area that cooperates between the outer tube 2 than prior art products, directly improved interior pipe 7 mobile guide performances, significantly improve the stationarity of relative movement, interior pipe 7 is difficult for side wears take place, and makes sealing configuration keep excellent sealing performance for a long time.

Claims (2)

1. sleeve expansion joint, it comprises adapter (1), outer tube (2), baffle ring (3), filler (4), gland (5), bolt (6) and interior pipe (7); Described outer tube (2) is for being provided with the straight tube member on outward flange limit, its left end adapters (1) formation housing that is tightly connected; Pipe (7) is similarly the straight tube member in described, direct and outer tube (2) the endoporus Spielpassung of left part peripheral hardware ring shoulder (7.1), baffle ring (3) is fixedlyed connected pipe (7) axial limiting structure in the formation with outer tube (2) stage casing inwall, be close to baffle ring (3) right side plug filling material (4), interior pipe (7) outer wall gap suit gland (5) also connects into axial adjustable sealing configuration by bolt (6); It is characterized in that: pipe (7) left part two wide and spaced ring shoulders of peripheral hardware (7.1) in described.

2. sleeve expansion joint according to claim 1 is characterized in that: the width of an interval 〉=list ring shoulder (7.1) between two wide ring shoulders (7.1) of pipe (7) left end peripheral hardware in described.

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