JPH04210385A - Positioning jig for piping element - Google Patents

Abstract

PURPOSE:To easily set the shaft center of a piping element to the shaft centers of a many kinds of pipings by providing a support member movable vertically at the upper end vicinity of a support bolt fitted to the outer peripheral face of the piping element, and locking the support member to a flange at the positioning time. CONSTITUTION:The fitting position in the axial direction of the support member 22a-22d fitted to the upper end vicinity of the support bolt 21a-21d fitted to the outer peripheral face of a piping element 3 is adjusted in advance so that the shaft center of the piping element 3 in the state of this support member 22a-22d being locked on the outer peripheral face of a flange 2a, 2b conforming to the shaft center of piping 1a, 1b. And, the space between mutual flanges is tightened and fixed with a through bolt, with the support member being locked on the outer peripheral face of the flange in the state of being adjusted. As a result, the drift between the axis center of the piping element and that of each piping can be adjusted easily by moving the fitting position of the support member, and even in case of the outer diameter of the flange being changed, it can easily cope with the change.

Description

[Detailed Description of the Invention] [Objective of the Invention] (Industrial Application Field) The present invention is directed to a piping element for improving the installation work efficiency when installing piping elements such as flowmeters and valves in the middle of piping. Regarding positioning jigs.

(Prior art) One method of installing piping elements such as flowmeters and valves in the middle of piping is as shown in Fig. 5, in which piping flanges are attached to each other without directly fixing the piping elements with bolts, etc. There is a method to sandwich it in between.

That is, as shown in the figure, flanges 2a and 2b are formed at one end of the piping 1a and lb, and an electromagnetic tube having an outer diameter D1 smaller than the outer diameter of the flanges 2a and 2b is formed between the flanges 2a and 2b. Piping element 3 consisting of a flow meter is inserted to form piping 1a.

1b and the axis of the piping element 3 are aligned, the through bolt 4 is installed through the hole 5a, which is drilled into each flange 2a, 2b.
5b,..., 6a, 6b, -, and nut 7 on the other side.
The screws are tightened securely. FIG. 6 is a front view showing a state in which the flanges 2a and 2b are tightened and fixed with the through bolts 4.

A flange 2a formed on the piping 1a, lb.

2b is installed using each hole diameter d of holes 6a to 6d. and mounting hole 6a
The number of ~6d and the installation differ depending on the outer diameter of the circle connecting the holes 6a to 6d, etc., depending on the diameter of the pipes 1a and lb and the flange standard. Therefore, if the installation as shown in FIGS. 5 and 6 is done by a mechanism, there is no need to form a flange on the piping element 3.
It becomes possible to attach the piping element 3 regardless of the type of b.

In general, if the axis of the piping element 3 and the axis of each piping 1a, lb are not precisely aligned, the piping element 3 and each arrangement i
The fluid does not flow smoothly at the interface between 1a and 1b, and the piping element 3, which is composed of an electromagnetic flowmeter and a solenoid valve, does not operate normally. Therefore, when installing a piping element 3 without a flange, the piping element 3 and each piping 1
It is only necessary to align the axes between a and lb.

Various proposals have been made in the past as positioning jigs for piping elements used in this axis alignment work.

FIG. 7 shows a proposal for a jig using positioning pieces (Utility Model Application No. 196328/1983). FIG. 7(b) is a front view, and FIG. 7(a) is a sectional view taken along line X--X in FIG. 7(b).

In this proposal, a positioning piece 8 is interposed between each through bolt 4 and the outer peripheral surface of the piping element 3.

The thickness of each positioning piece 8 is set in advance so that the axis of the piping element 3 coincides with the axis of each piping 1a, lb. Therefore, when installing the piping element 3, each positioning piece 8 is inserted between each through bolt 4 and the outer surface of the piping element 3, and each through bolt 4 is tightened with the nut 7. good. That is, simply by mounting each positioning piece 8, the axis alignment is automatically performed, so that work efficiency can be greatly improved.

However, in this method, the flange 2a.

When the outer diameter of the circle connecting the holes 68 to 6d changes, it is necessary to create the positioning piece 8 with a thickness corresponding to the outer diameter of the circle, which is extremely troublesome.

In order to eliminate such inconveniences, a jig shown in FIG. 8 has been proposed (Utility Model Application No. 59-23627).

In this proposal, an L-shaped support member 9 is attached to the outer peripheral surface of the piping element 3, and an adjustment screw 10 is screwed into this L-shaped support member 9. The through bolt 4 is biased at the tip of the adjustment screw 10. By adjusting the screwing amount g of this adjustment screw 10, the axis of the piping element 3 can be adjusted to
I try to align it with the axes of a and lb.

(7) However, in this method as well, the flange 2a.

2b, if the outer diameter of the circle connecting the holes 6a to 6d changes, the tip of the adjusting screw 10 will no longer come into contact with the through bolt 4. Furthermore, the installation cannot be easily handled if the number of holes 5a to 6d changes or if the drilling positions change.

Figure 9 shows mounting holes 6a drilled in flanges 2a and 2b.
It is a jig that does not use ~6d (Utility Model Publication No. 57-16802)
No. 0).

In this proposal, annular bodies 1.1a, 1.1b shaped to abut against the side surfaces of the piping element 3 are used. This annular body 11
A pair of protrusions 12a, 12b are formed on the outer periphery of the protrusions 12a and 12b.

Bent parts 13a and 13b are formed at the tip of 12b.

The annular bodies 11a, 1.1b are fixed in advance to the side surface of the piping element 3 using, for example, screws.

Thus, the piping element 3 with the annular bodies 11a and llb attached on both sides is attached to the flange 2a.

2b, and the bent portion 13a at the tip.

With the bolts 13b locked to the outer peripheral surfaces of the flanges 2a and 2b, the through bolts 4 are tightened and fixed with the nuts 7 as shown in FIG. 9(b). Therefore, the lengths of the protrusions 12a and 12b of the annular bodies 11a and 11b may be set to such a length that the axis of the piping element 3 coincides with the axis of each pipe 1a, 1b.

However, even in such a positioning jig, the piping 1a
, the outer diameter of the flanges 2a and 2b of lb.

When things change, we can't deal with it.

(Problems to be Solved by the Invention) As described above, in the conventional positioning jig for piping elements, the outer diameter of the piping flange changes, and the position of the hole drilled in the flange changes. When the number of attachments changes, it is necessary to recreate the jig itself each time, and there is a problem that one piping element cannot be attached to all types of flanges.

The present invention was made in view of these circumstances, and
By installing a vertically movable support member near the upper end of the support bolt attached to the outer peripheral surface of the piping element, the outer diameter and installation of the piping flange are not affected by the position or number of holes drilled. It is an object of the present invention to provide a piping element positioning jig that can easily align the axis of the piping element with the axis of many types of piping.

[Structure of the Invention (Means for Solving the Problems) In order to solve the above problems, the present invention arranges a pair of pipes each having a flange at one end so that the flanges face each other, and By interposing a piping element with an outside diameter smaller than the outside diameter of the flanges between opposing flanges and tightening them with multiple through bolts between the flanges, this piping element can be properly connected to each piping. A positioning jig for a piping element that is fixed between flanges so as to communicate with each other, the lower end of which is attached to multiple locations on the outer circumferential surface of the piping element, and a plurality of support bolts that extend upward from the piping element, and each support bolt. A plurality of support members are attached near the upper end of the support bolt so as to be movable in the axial direction, and the tips thereof extend toward the flange, and a tightening nut is provided to fix the axial position of each support member. After adjusting the axial position, each support member is secured to the outer circumferential surface of each flange, and the flanges are tightened with bolts passed between the flanges.

(Function) According to the piping element positioning jig configured in this way, the axial mounting position of the support member attached to the vicinity of the upper end of the support bolt attached to the outer peripheral surface of the piping element can be adjusted by Adjust in advance so that the axis of the piping element in a state where it is locked to the outer peripheral surface of the flange coincides with the axis of the piping on both sides. Then, in the adjusted state, the support member is locked to the outer surface of the flange, and the flanges are tightened and fixed with a through bolt.

With such a configuration, the misalignment between the axis of the piping element and the axis of each pipe can be easily adjusted by moving the mounting position of the support member, so the outer diameter of the flange can be changed. Even so, you can easily adapt to the changes.

(Example) An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing a piping system to which the piping element positioning jig of the embodiment is applied. The same parts as in FIG. 4 are given the same reference numerals. Therefore, detailed explanation of the overlapping parts will be omitted. Further, FIG. 2 is a cross-sectional view taken along the YY-plane perpendicular to the axis at the piping element position.

In this embodiment, the lower ends of support bolts 21a, 21b, 21c, and 21d are screwed and fixed to positions near both ends of the outer peripheral surface of the piping element 3 at an angle of 20 to 30 degrees with respect to the vertical line. And each support bolt 21a, 21b, 2
Support members 22a, 22b, 2 near the upper ends of 1c, 21d
2c and 22d are penetrated. And this support member 22a.

The tips of 22b, 22c, and 22d protrude outward from both side surfaces of piping element 3. Moreover, each support member 22 a ~
22d is freely movable in the axial direction of each support bolt 21a to 21d, so the axial position is fixed by a pair of bolts 23 and 24 (not tightened).

Next, a procedure for using the piping element positioning jig configured as described above will be explained.

First, before inserting the piping element 3 between the flanges 2a and 2b formed at one end of the piping 1a and lb, the outer diameter Do of the flanges 2a and 2b to be installed is measured. Since the outer diameter D1 of the piping element 3 is known, the distance from the outer peripheral surface of the piping element 3 to the support member 22a is calculated [L=(
Do-D+>/2]. And each branch member 2
Adjust the axial positions of a to 22d to the calculated distance.

Once the adjustment is completed, the position is fixed with the tightening nuts 23,24.

Next, the piping element 3 is inserted between the flanges 2a and 2b from above downward. Then, the supporting members 22a to 22d come into contact with the outer peripheral surfaces of the flanges 2a and 2b on both sides. As shown in FIG. 3, the piping element 3 is suspended from the outer peripheral surfaces of the flanges 2a and 2b by the support members 22a to 22d. Therefore, in this state, the axis of the piping element 3 and each piping core a.

It coincides with the axis of 1b.

Next, attach the through bolts 4 to the holes 5a to 5d and 6a to 6.
Piping element 3 is tightened by passing it through between d and tightening.
The flanges 2a and 2b are tightened and fixed between each other.

According to the positioning jig for piping elements configured in this way, each mounting hole 5a drilled in the flanges 2a and 2b, as in the conventional jig shown in FIGS. 7 and 8. ~
Each through bolt 4 passed between 5d and 6a to 6d is not used as a reference for positioning. Therefore, each installation depends on the number of holes 5a to 6d and the inner diameter d of the holes. Also, the installation is completely unaffected by the outer diameter of the circle connecting the holes.

Also, the outer diameter of the flanges 2a and 2b themselves. If the
Flange 2a after changing the axial position (distance ML) of 22d
, 2b may be set at a position corresponding to the outer diameter. That is, the flange 2a.

It can easily accommodate changes in the outer diameter of 2b.

In this way, each of the flanges 2a and 2b is attached to the holes 5a to 6.
It can fully accommodate changes in the specifications of d and changes in the outer diameter of the flange.

Therefore, one jig can be used for pipes 1a and 1b having a large number of flanges with different specifications.

Note that the present invention is not limited to the embodiments described above. In the example jig, support bolts 21a to 21d
Either the supporting bolt 21a is permanently fixed to the outer circumferential surface of the piping element 3, or it is detachably attached to the outer circumferential surface using, for example, a screw mechanism, as shown in FIG. ~21d may be attached and removed after the alignment work is completed.

[Effects of the Invention] As explained above, according to the piping element positioning jig of the present invention, a vertically movable support member is provided near the upper end of the support bolt attached to the outer peripheral surface of the piping element, and the Axial alignment is achieved by locking the member to the flange. Therefore, the axis of the piping element can be easily aligned with the axis of many types of piping without being affected by the position or number of holes in the outer diameter and attachment of the piping flange.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a piping system incorporating a positioning jig for piping elements according to an embodiment of the present invention, Fig. 2 is a sectional view of the jig of the embodiment, and Fig. 3 is a sectional view of the jig of the embodiment. Fig. 4 is a sectional view showing another embodiment of the jig of the present invention, Fig. 5 is a perspective view showing a general piping system, and Fig. 6 shows the piping elements in the system. A front view showing the installed state and FIGS. 7 to 9 are views showing the configuration of a conventional piping element positioning jig, respectively. la, lb--piping, 2a, 2b-flange, 3...
・Piping element, 4...Through bolt, 5a-5d, 6a-
6d... Mounting is through hole, 7... Nut, 21a to 21d
...Support bolt, 22a to 22d...Support member, 23
゜24...Tightening nut. Applicant's representative Patent attorney Takehiko Suzue Figure 2 Figure 3 Figure 4 Figure 8 (a) (b)

Claims (1)

[Claims] A pair of piping each having a flange formed at one end is arranged so that the flanges face each other, and a piping element having an outside diameter smaller than the outside diameter of the flange is arranged between the facing flanges. A piping element positioning jig for fixing the piping element between the flanges so that the piping element properly communicates with each piping by interposing the flanges and tightening and fixing the flanges with a plurality of through bolts. , the lower end is attached to multiple locations on the outer peripheral surface of the piping element,
a plurality of support bolts extending upwardly of the piping element; a plurality of support members mounted near the upper end of each of the support bolts so as to be movable in the axial direction of the support bolts; and each of the support members having tips extending toward the flange; and a tightening nut for fixing the axial position of the support member, and after adjusting the axial position of the support member, with each support member being locked to the outer circumferential surface of each flange, the flange is tightened between the flanges. A piping element positioning jig characterized by tightening and fixing with a through bolt.