CN2238369Y

CN2238369Y - Elastic non-thrust bidirectional telescoping pipeline automatic compensator

Info

Publication number: CN2238369Y
Application number: CN96203030U
Authority: CN
Inventors: 张卫民
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-01-24
Filing date: 1996-01-24
Publication date: 1996-10-23
Anticipated expiration: 2006-01-24

Abstract

The utility model relates to an elastic non-thrust bidirectional telescoping pipeline automatic compensator. The outer side surfaces of both ends of an outer sleeve pipe are respectively provided with an elastic group, and two sealing ring groups and two guiding sealing ring groups are arranged in a hollow cavity formed between a telescoping pipe and the inner cavity wall of the outer sleeve pipe. The cavity formed by the axial spacing between the telescoping pipe and the outer sleeve pipe constitutes two equilibrium chambers, and a blind eliminating hole is arranged on the telescoping pipe corresponding to the equilibrium chambers. Thus, the utility model not only has a reasonable structure, fewer welding positions and convenient maintenance, random installation, without limitation for the flow direction of medium and convenient use, but also can effectively eliminate the great thrust of the medium against a pipeline, so the pipeline is more stable and reliable and remains a good sealed condition.

Description

Elasticity does not have thrust bi-directional expansion pipeline automatic compensator

Compensation of pipeline device, particularly elasticity that the utility model relates to a kind of fed sheet of a media do not have thrust bi-directional expansion pipeline automatic compensator.

China, the compensation of pipeline device kind that adopts in the pipework of fed sheet of a media is a lot.Recently, also produce a kind of " elasticity does not have thrust pipeline automatic compensator ", it is to be equipped with by oversheath and sheathed casing to connect into " Z " font and the outer sleeve that constitutes through connecting ring on telescopic pipe, be provided with the elasticity group in the cavity that between outer sleeve and telescopic pipe, forms and compress the seal ring group that contacts with it, pilot seal ring group, and the axially spaced-apart between seal ring group and the pilot seal ring group constitutes a balance chamber, and on the balance chamber corresponding telescopic pipe the uniform blind hole that disappears is arranged.Though this compensator compensation rate is big, can eliminate the thrust of medium to pipeline, good sealing effect,, it has only a balance chamber, is difficult to eliminate bigger medium thrust in the pipeline.Since its restriction MEDIA FLOW to, give and to install and use band and adopt inconvenience.Simultaneously, the welding part is more, is difficult to ensure the stability and the excellent sealing performance of pipeline.

The purpose of this utility model is to provide a kind of elasticity not have thrust bi-directional expansion pipeline automatic compensator, it can eliminate medium thrust bigger in the pipeline effectively, make pipeline more reliable and more stable, keep sealing state well, and can install and use arbitrarily, make ducted MEDIA FLOW to unrestricted.

Its solution is: two telescopic pipes, one end is set with into outer sleeve two ends inner chamber, by retaining ring, removable relief frame, two elastic components that regulator bolts and suit spring is thereon formed are not positioned on the outer side surface of outer sleeve two ends, and be connected with the sealing cover of outer sleeve by regulator bolts, by stuffing box packing, the double seal ring group that the alternate layout of seal joint is formed is arranged in the cavity that forms between two telescopic pipes and the outer sleeve two ends internal chamber wall respectively, and compress with the sealed at both ends lid of outer sleeve and to contact, be arranged in the cavity that forms between the top of two telescopic pipes and the outer sleeve internal chamber wall respectively by stuffing box packing and two pilot seal ring groups of forming of guiding pressure ring, and the axially spaced-apart between seal ring group and the pilot seal ring group constitutes two balance chamber, and is evenly equipped with the blind hole that disappears on the balance chamber corresponding telescopic pipe.When a part of fed sheet of a media in the pipeline flows in two balance chamber from the blind hole that disappears, can produce a pressure medium to corresponding pilot seal ring group one end face, and the medium thrust from two telescopic pipe ports that bear this pressure medium and pilot seal ring group other end balances each other, under the effect of two pairs of equilibrant, can eliminate medium thrust bigger in the pipeline effectively.

The utility model is owing to be respectively arranged with the elasticity group on outer sleeve both end sides face, and be provided with two seal ring groups and two pilot seal ring groups in the cavity that between two telescopic pipes and outer sleeve internal chamber wall, forms, the cavity that axially spaced-apart between seal ring group and the pilot seal ring group forms constitutes two balance chamber, with on the balance chamber corresponding telescopic pipe blind hole of disappearing is arranged, so, it is not only rational in infrastructure, the welding part is few, be convenient to maintenance, can install arbitrarily, do not limit MEDIA FLOW to, easy to use, and can eliminate medium thrust bigger in the pipeline, good sealing effect effectively, thereby make the fed sheet of a media pipeline more reliable and more stable, and keep good sealing state.

Embodiment of the present utility model is described in detail in conjunction with the accompanying drawings.

Fig. 1 does not have the plan view of thrust bi-directional expansion pipeline automatic compensator for elasticity.

Fig. 2 is the A-A sectional view.

Among Fig. 1, Fig. 2, outer sleeve is welded by two straight tubes (7), (8), and an end of two telescopic pipes (1), (14) is respectively charged into the two ends inner chamber of outer sleeve, and by the both ends of the surface of sealing cover (2), (13) closed outer casing pipe.In the cavity that between telescopic pipe (1), (14) and outer sleeve internal chamber wall, forms, from two symmetrical seal ring groups and pilot seal ring group are installed respectively outside to inside successively, and the seal ring group is made of the stuffing box packing made from rubber and plastic or asbestos packing (16), (23) and seal joint (17), (22) alternate layout, and pilot seal ring group is connected by pressure ring and screw in compression by the stuffing box packing made from rubber and plastic or asbestos packing (19), (20) and constitutes.The cavity that axially spaced-apart between seal ring group and the pilot seal ring group forms constitutes two balance chamber (24), (25), and respectively is evenly equipped with 4 blind holes that disappear (18), (21) on the corresponding telescopic pipe of balance chamber (1), (14).One elasticity group respectively is installed on the outer side surface of outer sleeve two ends, form two elasticity groups of symmetry, this elasticity group is by the retaining ring (4), (11) that are welded on the outer sleeve outer side surface, and movably relief frame (6), (9) by 6 uniform regulator bolts (3) that spring (5), (10) are housed, (12) with the sealing cover (2) of outer sleeve, (13) connect and constitute, and an overflow hole (15) of getting rid of waste liquid or waste gas is arranged at the middle part of outer sleeve.

When medium passes through conveyance conduit, be arranged on the seal ring group between telescopic pipe (1), (14) and the outer sleeve internal chamber wall, under the effect of the pressure of elasticity group and pressure medium, be in good sealing state, can prevent the medium leakage in the pipeline effectively, and because the effect of elasticity group can also compensate the axial displacement that produces because of pipeline heat expansion, shrinkage automatically.Simultaneously, the both ends of the surface of pilot seal ring group, be subjected to flow into the pressure medium effect in balance chamber (24), (25) from the pressure of telescopic pipe (1), (14) port medium and from the blind hole that disappears (18), (21), these two kinds of pressure form two pairs of equilibrant, thereby can eliminate larger axis that medium produces pipeline to thrust, more reliable and more stable to guarantee pipeline.

Claims

1, a kind of elasticity does not have thrust bi-directional expansion pipeline automatic compensator, comprise telescopic pipe and suit outer sleeve thereon, it is characterized in that two telescopic pipes (1), (14) one ends are set with into outer sleeve two ends inner chamber, two elastic components are not positioned on the outer side surface of outer sleeve two ends, and by regulator bolts (3), (12) with the sealing cover (2) of outer sleeve, (13) be connected, two seal ring groups are positioned at two telescopic pipes (1) respectively, (14) in the cavity that forms with outer sleeve two ends internal chamber walls, and with the sealing cover (2) at outer sleeve two ends, (13) compress contact, two pilot seal ring groups are positioned at two telescopic pipes (1) respectively, (14) in the cavity that top and outer sleeve internal chamber wall form, and, axially spaced-apart between seal ring group and the pilot seal group constitutes two balance chamber (24), (25), with balance chamber (24), (25) corresponding two telescopic pipes (1), (14) all be evenly equipped with the blind hole that disappears (18) on, (21).