CN86208067U

CN86208067U - Limit telescopic unit for pipe

Info

Publication number: CN86208067U
Application number: CN 86208067
Authority: CN
Inventors: 张应达
Original assignee: ANSHAN FERROUS METALLURG MININ
Current assignee: ANSHAN FERROUS METALLURG MININ
Priority date: 1986-10-06
Filing date: 1986-10-06
Publication date: 1988-02-10

Abstract

The utility model relates to a limit distance telescopic unit for a pipe which is connected to the pipe, comprising an inner bushing and an outer bushing. The utility model is characterized in that a blocking ring (3) is arranged in the outer bushing; the inner bushing is provided with a blocking ring (4). When the inner bushing is telescoped in the outer bushing, the blocking ring (3) limits the blocking bushing (4), so that the inner bushing can not be pulled out. Therefore, the accidents of slurry leakage can be prevented from happening; due to that the limit distance blocking ring arranged between the inner bushing and the outer bushing is not naked, other people can be prevented from disassembling the limit blocking ring.

Description

Limit telescopic unit for pipe

The utility model belongs to the expansion device that is connected on the exposed installation pipeline.

The pipeline extension device of present common employing, the overwhelming majority does not limit journey, and also having is to limit journey on a small quantity, but because limit journey parts expose externally, is dismantled by the people easily, seldom is used.Do not limit the pipeline extension device of journey, be connected on the exposed installation pipeline, because seasonal variations is often drawn back the slurries race leakage accident that takes place because of the pipeline shrinkage.

One of the purpose of this utility model is the limit Cheng Wenti that solves expansion bend, and two of purpose is the not exposed problems that solve the limit journey parts of limit journey expansion bend.

The utility model is by inner sleeve and (see figure 1) that outer sleeve is formed.Inner sleeve is welded into by flange plate (1), inner step ring (4), steel pipe I (2).Outer sleeve is connected into by first half, latter half of, seal ring (13), bolt (6), nut (7).Outer sleeve is latter half of to be welded into by sealing pressure pipe (10), connecting plate (9), steel pipe II (5), shelves rings (3).The outer sleeve first half is welded into by flange plate (1), steel pipe VI (17), steel pipe V (16), steel pipe IV (15), sealing shelves ring (14), steel pipe III (12), connecting plate (11).

Inner sleeve inserts the interior outer stop ring (3) of outer sleeve, inner step ring (4) (seeing Fig. 2, Fig. 3) all is the convex-concave shape, mutually can be chimeric, continue to insert ring more, rotation makes the protruding and protruding, recessed and recessed corresponding overlapping of two grades of rings (3) and (4) mutually again, and two grades of rings can be limit journey mutually.The expansion bend that is in limit journey state is installed on the pipeline formula of promptly exceeding pipeline extension device.

Inner sleeve elongates or shortens and stretches at outer sleeve internal cause temperature change pipeline.Be that inner step ring (4) moves between outer stop ring (3) and sealing pressure pipe (10), this moving section is the spacing stroke of expansion bend just.Outer stop ring (3) is the limit way limit parts that limit inner step ring (4).When the pipeline shrinkage, inner sleeve just can not be drawn out in outer sleeve.

Limit journey parts, promptly interior outer stop ring is placed between inside and outside two sleeve pipes.Not exposed, prevent that other people from dismantling.The utility model is a limit formula expansion bend, is drawn back in the time of avoiding the pipeline shrinkage, avoids slurries race leakage accident and causes economic loss.Install limit formula expansion bend on pipeline, the pipeline fixed support can reduce, and can reduce the pipeline investment.

The exceed overall pattern of formula pipeline extension device of description of drawings, Fig. 1, Fig. 2 is the drawing in side sectional elevation of outer stop ring (3), Fig. 3 is the drawing in side sectional elevation of inner step ring (4).

Embodiment, it is 9.81 * 10 that two ends of the present utility model flange plate (1) adopt general pressure ⁵The steel flanges dish of Pa.All the other component A ₃Steel is made.Inner step ring (4), outer stop ring (3) are convex-concave shape (seeing Fig. 2, Fig. 3), promptly will encircle six five equilibriums with shelves ring center, are divided into three protruding three recessed.Two grades of rings can become flexible chimeric mutually.Steel pipe II (5) is welded with outer stop ring (3) earlier, and then welds with connecting plate (9).The center of a bulge loop section of requirement outer stop ring (3) and a screw centres of connecting plate (9).The pipeline center that requires the expansion bend center to be connected with two ends during installation is concentric.

Claims

1, a kind of limit formula expansion bend that is connected on the pipeline, it is made up of inner sleeve, outer sleeve, and it is characterized in that having on the inner sleeve has shelves rings (3) in shelves rings (4), the outer sleeve.

2, a kind of limit formula pipeline extension device that is connected on the pipeline according to claim 1 is characterized in that shelves rings (4) and shelves rings (3) are the convex-concave shape, can become flexible chimeric mutually.

3, a kind of limit formula pipeline extension device that is connected on the pipeline according to claim 1 is characterized in that shelves rings (4) and shelves rings (3) are arranged between inner sleeve and the outer sleeve.