JP2006226319A - Piping apparatus and pipe line displacement adjustment mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a piping apparatus and a pipe line displacement adjustment mechanism enabling to freely set a slide mechanism part in an axially perpendicular direction without limitation of displacement absorbing quantity in a pipe axle perpendicular direction and not requiring a spherical surface seat since a fixing bolt is not inclined by pipe axle thrust force even under a condition where displacement in the axially perpendicular direction is absorbed. <P>SOLUTION: This mechanism includes an axial direction moving pipe body 6 movable in an axial direction including a cylindrical part 11 and a flange part 12 and having the cylindrical part 11 installed inside of the piping apparatus 2, an annular retainer 8 having an annular space 7 formed in a flange part 12 of the axial direction moving pipe body 6, and an axially perpendicular direction moving pipe body 9 movable in a direction perpendicular to an axial direction including an annular engagement part 16 in one end side and a flange part 17 in another end side and having the annular engagement part 16 installed in the annular space 7 formed between the axial direction moving pipe body 6 and an annular retainer 8, and is arranged between the piping apparatus 2 positioned in a piping apparatus side and piping 4 positioned in a piping side. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a pipe device and a pipe displacement adjustment mechanism that enable adjustment in a pipe axis direction and a direction orthogonal to the pipe axis.

  When connecting piping equipment such as valves, pumps, flow meters, etc. to the pipeline, in the flange jointing work between the piping equipment and the pipe, align the flange surfaces of the opposing flanges (alignment in the pipe axis direction, pipe axis direction Alignment in a direction perpendicular to the direction, alignment of the parallelism of the flange surface, and alignment of the flange bolt hole pitch in the circumferential direction) are important.

  Piping equipment is connected to the pipe line by placing the flange part of the piping equipment and the flange part of the pipe line so that the flange bolt holes are aligned, and the flange part of the piping equipment and the flange part of the pipe line are aligned. This is done by fastening bolts and nuts through the bolt holes.

  However, it is extremely difficult to remove the piping equipment for maintenance, etc., when the structure of connecting both flange parts directly as described above requires high accuracy in the allocation of the flange face dimension. Therefore, an adjustment joint between flange surfaces is usually used at the connection portion between the piping equipment side and the pipe line side.

  Conventionally, the flange-to-flange adjustment joint that has been used in the past is the inner part where the flange part provided at the connection part of the piping equipment and the flange part of the outer pipe are connected by bolts and connected to the end of the pipe line by welding. A sealing material such as a rubber ring in a ring-shaped housing that is inserted into the outer tube and attached to the end of the outer tube is in close contact with the outer peripheral surface of the inner tube, and the fitting gap between the outer tube and the inner tube It is comprised so that a seal | sticker may be aimed at.

  In the conventional flange-to-flange adjustment joint, it is possible to effectively cope with the alignment in the pipe axis direction by the fitting depth between the outer pipe and the inner pipe. It has become extremely difficult to deal with the misalignment of the mind, and depending on the magnitude of the misalignment, the connection may become impossible.

  Therefore, the present inventor is disposed between the flange portion of the piping equipment and the flange portion of the pipe line in order to improve the workability of the alignment of the flange surfaces of the piping equipment and the flange portion of the pipe line. We have developed a joint for displacement adjustment.

  The displacement adjusting joint is formed with a required number of bolt insertion holes corresponding to the flange portion provided on the piping equipment side and the flange portion on the inner pipe side located at the end of the pipe line. Bolts are inserted into the bolt insertion holes in a loosely fitted state, and an outer tube having a sealing material in close contact with the outer peripheral surface of the inner tube is sandwiched between the flange portion on the piping device side and the flange portion on the inner tube side, In this configuration, a spherical seat is interposed on the outer surface side of the bolt insertion hole and fastened with a nut (see Japanese Patent Application No. 2004-109962).

  The displacement adjustment joint can be connected to adapt to the displacement and bending of the shaft center in addition to the alignment in the tube axis direction, but the displacement absorption in the direction perpendicular to the tube axis is limited. There's a problem.

  The present invention has been made in consideration of the above-described points, and is not limited to the displacement absorption amount in the direction perpendicular to the pipe axis, and includes a piping device capable of adjusting in the direction perpendicular to the pipe axis and a displacement adjustment mechanism for the pipe. The purpose is to provide.

  The displacement adjustment mechanism for a piping device and a pipe line of the present invention includes a tubular portion and a flange portion, an axially movable tube body that is movable in the axial direction with the tubular portion mounted inside the piping device, and this shaft. An annular retainer disposed so as to form an annular space in the flange portion of the directional moving tube; an annular engaging portion on one end side; and a flange portion on the other end side; It is comprised from the axial orthogonal direction moving tube body which can move to the direction orthogonal to the axial direction with which the annular space formed between the annular retainers was mounted | worn.

To do.

  According to the present invention, the slide mechanism in the direction perpendicular to the axis can be freely set without being limited by the amount of displacement absorbed in the direction perpendicular to the tube axis, and even in a state where the displacement in the direction perpendicular to the axis is absorbed. Since the fixing bolt against the tube shaft thrust does not tilt, a spherical washer is not required.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of a piping device and a displacement adjustment mechanism for a pipe according to the invention will be described with reference to the accompanying drawings.
In FIG. 1, reference numeral 1 denotes a piping device and a displacement adjustment mechanism for a pipe according to the present invention. The piping device and the displacement adjustment mechanism 1 for a pipe are connected to a flange portion 3 of the piping device 2 and a piping device 2 of the pipe 4. It is arrange | positioned between the flange parts 5 nearest to.

  The piping device and the pipe displacement adjustment mechanism 1 form an axially moving tube body 6 movably disposed in the axial direction inside the piping device 2 and an annular space 7 in the axially moving tube body 6. The axial retainer 8 arranged in such a manner as to be movable in the direction orthogonal to the axial direction in the annular space 7 formed between the axial retainer 6 and the annular retainer 8. 9.

  The axial direction moving pipe body 6 includes a cylindrical portion 11 that is mounted on a mouth portion 10 formed in the flange portion 3 of the piping device 2 so as to be movable in the axial direction, and the tubular portion 11 opposite to the piping device 2. And a flange portion 12 formed at the end. On the joint surface between the inner surface 10a of the mouth portion 10 of the flange portion 3 of the piping device 2 and the outer surface 11a of the cylindrical portion 11, a seal ring 13 formed of special rubber is disposed. The seal ring 13 is preferably attached to an annular groove 14 formed in the inner surface 10 a of the mouth portion 10 of the flange portion 3 of the piping device 2.

  The annular retainer 8 has a substantially L-shaped cross section, and has a flange surface at the end opposite to the piping device 2 of the flange portion 12 of the axially moving tubular body 6 so as to form an annular space 7 opened radially inward. It is attached to 12a via a plurality of bolts 15 spaced in the circumferential direction.

  The axially orthogonal moving tube 9 has an annular engagement portion 16 projecting radially outward on one end side and a flange portion 17 formed on the other end side. An annular engagement portion 16 formed in the axially orthogonal direction moving tube 9 is closely engaged with and in an annular space 7 formed between the axially moving tube 6 and the annular retainer 8. The dimension can be moved in the radial direction. An O-ring 18 is arranged between the flange surface 12a of the flange portion 12 of the axially moving tube 6 opposite to the piping device 2 and the annular engagement portion 16 formed in the axially orthogonally moving tube 9. Yes. The O-ring 18 is preferably mounted in an annular groove 19 formed in an annular engagement portion 16 formed in the axial orthogonal direction moving tube 9.

  Further, fixing bolts 20 for a plurality of pipe shaft thrusts spaced apart in the circumferential direction are arranged on the flange portion 3 of the piping device 2. Each fixing bolt 20 has a protruding length with respect to the flange portion 3 adjusted by nuts 21 and 21 positioned on both sides of the flange portion 3 of the screw portion 20a.

  In FIG. 1, reference numeral 22 denotes bolt nut means for connecting the flange portion 17 of the axially orthogonal moving tube 9 and the end flange portion 5 of the pipe line 4.

Next, the operation of the piping device and the pipe displacement adjustment mechanism 1 according to the present invention will be described.
The piping device and the pipe displacement adjusting mechanism 1 are arranged so that the annular moving portion 6 of the axially moving tube 9 is aligned with the flange portion 12 of the axially moving tube 6. The axially perpendicular moving tube 9 is disposed, and the annular retainer 8 is disposed on the flange portion 12 of the axially moving tubular body 6 so as to surround the annular engaging portion 16 of the axially orthogonal moving tube 9. Assembling is performed by attaching to the flange portion 12 of the axially moving tube 6 via the bolt 15. In this case, an O-ring 18 is disposed between the flange portion 12 of the axially moving tube body 6 and the annular engaging portion 16 of the axially orthogonal direction moving tube body 9. The O-ring 18 liquid-tightly seals the joint surface between the flange portion 12 of the axially moving tube 6 and the annular engaging portion 16 of the axially orthogonal tube 9.

  In addition, the displacement adjustment mechanism 1 for the piping device and the pipe line is provided by mounting the cylindrical portion 11 of the axially moving tubular body 6 on the mouth portion 10 of the flange portion 3 of the piping device 2 so as to be movable in the axial direction. It is attached to the device 2. In this case, a special rubber seal ring 13 is disposed on the joint surface between the mouth portion 10 of the flange portion 3 of the piping device 2 and the tubular portion 11. The special rubber seal ring 13 seals the joint surface between the cylindrical portion 11 of the axially moving tube 6 and the mouth portion 10 of the flange portion 3 of the piping device 2 in a liquid-tight manner.

  The piping device and the pipe displacement adjustment mechanism 1 are arranged between the flange portion 3 of the piping device 2 and the flange portion 5 closest to the piping device 2 of the pipe line 4, and the cylindrical shape of the axially moving tubular body 6. The portion 11 is mounted to the mouth portion 10 of the flange portion 3 of the piping device 2 so as to be movable in the axial direction, and the fixing bolt 20 against the tube shaft thrust provided on the flange portion 3 of the piping device 2 is attached to the flange of the axially moving tube body 6 The amount of movement in the tube axis direction relative to the piping device 2 is adjusted by contacting the portion 12.

  Further, the displacement adjustment mechanism 1 of the piping device and the pipe line is provided with a bolt hole provided in the flange part 5 of the pipe line 4 closest to the pipe device 2 in the flange part 17 of the axially movable pipe 9. Are connected to the pipe line 4 by fastening the bolt nut means 22 through the aligned bolt holes.

  In the piping device and the pipe displacement adjusting mechanism 1 according to the present invention, the axially moving tube 6 is movable in the tube axis direction with respect to the piping device 2, and the axially orthogonal moving tube 9 is the axially moving tube 6. Therefore, even if the displacement in the direction perpendicular to the tube axis is absorbed, the fixing bolt 20 is not inclined with respect to the thrust of the tube axis. A washer is not required.

  Further, since the piping device and the pipe displacement adjusting mechanism 1 of the present invention do not use a standard flange in the fixing mechanism portion for the pipe shaft thrust, the outer diameter can be reduced and the number of fixing bolts in the direction perpendicular to the pipe axis can be reduced. Thus, the entire apparatus can be made compact.

It is a side view which shows a piping apparatus and a part of displacement adjustment mechanism of a pipe line by this invention in a cross section.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Piping equipment and pipe displacement adjustment mechanism 2 Piping equipment 6 Axial moving pipe 7 Annular space 8 Annular retainer 9 Axis orthogonal moving pipe

Claims (3)

  In a piping device disposed between a piping device located on the piping device side and a piping located on the pipeline side, and a displacement adjustment mechanism for the pipeline, the displacement adjustment mechanism has a cylindrical portion and a flange portion, and is a cylinder. An axially movable tube body that is movable in the axial direction with a cylindrical portion mounted inside the piping device, an annular retainer that is disposed so as to form an annular space in the flange portion of the axially movable tube body, and one end side A shaft that has a flange portion on the other end side and an annular engagement portion and is movable in a direction orthogonal to the axial direction in which the annular engagement portion is mounted in an annular space formed between the axially moving tube and the annular retainer. A piping device and a displacement adjustment mechanism for a pipeline characterized by having an orthogonal direction moving tube.   An annular seal ring is disposed between the inner peripheral surface of the flange portion of the piping device and the outer peripheral surface of the cylindrical portion of the axially moving tube, and the annular engaging portion of the flange portion of the axially moving tube and the axially orthogonal direction moving tube. 2. The displacement adjustment mechanism for piping equipment and pipes according to claim 1, wherein an O-ring is arranged between the pipes.   The displacement adjustment mechanism for piping equipment and pipes according to claim 1 or 2, wherein a pipe shaft thrust fixing bolt is disposed between the piping equipment flange portion and the axially moving tube flange portion.

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