JPH11248073A - Device of expansion pipe fitting and method for installation of pipe fitting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow simultaneous mounting of a fixing member, guide, and expansion pipe fitting with the aid of a frame, ensure a stable quality, reduce the costs, shorten the construction term, and allow partial omission of troublesome design calculations of the fixed point. SOLUTION: A fixing member 41 having a connection pipe 44A and a guide 42 having a connection pipe 44B are mounted on a frame 22, and an expansion pipe fitting 5 is installed between the connection pipes 44A and 44B, and these are turned in a unit structure. The frame 22 attached to a ceiling 1 either directly or through bracket(s) 2. One connection pipe 44A is fixed to the ceiling through the fixing member 41 and frame 22 to form a main fixed point for piping 3A, while the other connection pipe 44B is held by the guide 42 in such a way as movable in the axial direction so that the expansion and contraction are absorbed by the piping 3B.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an expansion joint device for absorbing expansion and contraction of pipes in various pipelines in the axial direction, and a method of installing the same.

[0002]

2. Description of the Related Art In hot water supply pipes for bathrooms, kitchens, cold / hot water pipes for heating and cooling, or steam pipes, expansion and contraction of the pipes themselves due to the temperature of the fluid flowing in the pipes, particularly thermal stress accompanying expansion and contraction in the axial direction is a problem. Becomes Incidentally, considering a steel pipe fixed at both ends, a thermal stress of about 0.25 kgf / mm ² is generated for a temperature change of 1 ° C. regardless of the fixing interval. For example, when there is a temperature change of 120 ° C. between the air and the atmosphere such as ventilation in the morning, a thermal stress of about 30 kgf / mm ² is generated. Even if such a thermal stress acts, the wall thickness of the pipe can sufficiently withstand the stress, but a portion where the stress is concentrated, such as a screw portion or a branch portion, is broken and causes water leakage. Therefore, the piping is devised so as to absorb the amount of expansion and contraction by providing fixed points and expansion joints at appropriate positions so that parts such as threads and branches are not destroyed by expansion and contraction of the tube itself due to thermal expansion of the piping. (Example: JP-A-62-283290)
JP, JP-A-57-208387, etc.).

[0003] As expansion joints for absorbing the expansion and contraction of piping, there are generally two types of bellows type and sleeve type, and further classified into two types, a single type and a double type, depending on the installation type. Manufactured and sold by fitting manufacturers.

The bellows type expansion joint is also referred to as a packless expansion joint, which absorbs expansion and contraction of the piping in the axial direction by expansion and contraction of the bellows, and there is no leakage of fluid, but there is a limit to the strength of the bellows. There are also problems such as being unsuitable for high-pressure steam, and being easily corroded due to accumulation of condensed water on the bellows folds.

[0005] The sleeve type expansion joint is designed to absorb expansion and contraction in the axial direction by sliding the sleeve over the packing portion, and the absorption of expansion and contraction can be very large.
In many cases, a single type is sufficient. Recently, good packing has become available, and products with long life for high temperature and high pressure are also manufactured.

In the single type, an expansion joint is generally installed near one main fixing point side of a pipe whose both ends are mainly fixed, and the expansion and contraction of a pipe portion from the opposite main fixing point to the expansion joint is absorbed. It is a method.

[0007] The double type is equipped with an intermediate fixing at the center of the expansion joint itself. Generally, an expansion joint is installed at substantially the center of the pipe whose both ends are mainly fixed, and the intermediate fixing of the expansion joint is applied to the building side. It is a method of fixing and absorbing the expansion and contraction of the piping on both sides of the expansion joint.

In the case of a bellows type expansion joint, a standard JIS
In accordance with standards such as B2352, the amount of expansion and contraction that can be absorbed by one expansion joint is 35 mm (elongation 25 mm, shrinkage 10 m)
m), 70mm in duplex (elongation 50mm, shrinkage 20mm)
In the case of a sleeve type expansion joint, H 2 _O
The amount of expansion and contraction that can be absorbed by one expansion joint in a standard such as ASS 003 is 50mm, 100mm, 200mm
Stipulates that each user's convenience is provided.

The operation of installing and installing a conventional expansion joint at a site is generally as follows. The equipment contractor in charge of plumbing works determines the piping route according to the ceiling, floor, wall, etc. of the building at the site, determines the position of the main fixed point, the position of the expansion joint, and performs the pressure test before operation and the actual operation Calculate and select the strength of the main fixed point and guide from the load generated at the time and select it. At this time, the type of expansion joint may be changed due to the strength of the ceiling, floor, wall, etc. and the position of the main fixing point of the piping, so the design calculation is repeated again and the final construction drawing is created .

[0010] Based on the construction drawing, a bracket 2 as a support base is installed on a frame (eg, ceiling) 1 on which the pipes 3 (3A, 3B) are constructed as shown in FIG. 14, for example. Next, in the case of the single type expansion joint 5, a fixing member 4 called a normal anchor, which is a main fixing point, is attached by welding or the like near an end of one pipe 3A facing the other pipe 3B. After integrally fixing the bracket 4 to the bracket 2 by welding or bolts, one end of the expansion joint 5 is connected to the pipe 3A with bolts and nuts. Next, one end of the other pipe 3B is flange-connected to the telescopic joint 5 by bolts and nuts, and the vicinity of the flange connection portion of the pipe 3B is movably held in the axial direction by a guide 6, and the other end is a fixing member. And fixed as the main fixed point. Further, a pipe support member 7 for supporting the weight of the pipes 3A and 3B and a pipe bending prevention guide 26 are provided at appropriate intervals.

In the case of the double type expansion joint 8, an intermediate fixing member (anchor) 10 of the expansion joint 8 is used as shown in FIG.
And the bracket 2 are fixed directly or with a height adjusting component 11 interposed between these two members. Next, pipes 3A, 3
The opposite ends of B are connected to the respective ends of the expansion joint 8 with bolts and nuts, and are held by guides 6 so as to be movable in the axial direction. Further, a pipe support member 7 for supporting the weight of the pipes 3A and 3B and a guide 26 for preventing the pipes from sitting are provided at appropriate intervals as in the case of the single type. The guide 6 is provided to prevent the weight and bending of the pipes 3A and 3B from affecting the expansion joints 5 and 8, and is installed as close as possible to the expansion joint.

The expansion joints 5 and 8 are installed in substantially the same procedure without distinction between a sleeve type and a bellows type.

The installation and installation of the above-mentioned telescopic joints 5 and 8 and the indispensable accessories, ie, the bracket 2, the fixing member 4, the guide 6, the pipe support member 7, and the height adjusting part 11 are performed by the pipe joint. Contractors specializing in equipment construction other than the manufacturer were contracted, and in fact, welding technicians, plumbing technicians, etc. were working in turn while securing the schedule.

[0014]

As described above, conventionally, after the installation work of the bracket 2 is performed,
Then, a single type expansion joint 5 or a double type expansion joint 8 is connected to the pipes 3A and 3B, respectively. In the case of a single type, the pipe 3A is fixed by the fixing member 4 and the pipe 6 is connected by the guide 6. 3B is movably held in the axial direction,
In the case of the double type, the expansion joint 8 is fixed by the intermediate fixing member 10 and the pipes 3A, 3B are held by the guide 6 so as to be movable in the axial direction. However, if the work space at the site is insufficient, the installation work of the bracket 2 and the installation work of the fixing member 4, the guide 6, and the expansion joint 5 or the expansion joint 8 must be performed in an unnatural posture. However, there is a problem that it is extremely difficult and time-consuming, and it is necessary to prepare a different fixing member and guide member for each ceiling, floor, and wall installation, and it is troublesome to manage parts. In addition, with the diversification of standards for various building facilities such as supply facilities, piping, and air conditioning, the installation methods and installation locations are becoming unified. However, there is also a problem that the dimensional accuracy of the installation of the fixing member 4 and the guide 6 is poor, and there is a problem in the stability of the quality, and the construction period is delayed and the construction cost is increased.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to allow a fixing member, a guide, and an expansion pipe joint to be simultaneously installed through an installation frame. , Ensuring stable quality,
An object of the present invention is to provide an expansion joint device and a method for installing the same, which can reduce the cost and the construction period, and can partially omit a troublesome design calculation of a fixed point.

[0016]

According to a first aspect of the present invention, there is provided a telescopic pipe joint device which is connected in the middle of a pipe and absorbs expansion and contraction of the pipe. Two connecting pipes respectively connected to opposite ends of the side pipe, an extendable telescopic joint connected to these connecting pipes, and fixed to one of the two connecting pipes A fixing member and a guide for holding the other connecting pipe movably in the axial direction are provided, and the fixing member and the guide are integrally provided on a mounting frame installed at an installation location.

According to a second aspect of the present invention, in a telescopic pipe joint device which is connected in the middle of a pipe and absorbs expansion and contraction of the pipe, the upstream pipe and the downstream pipe constituting the pipe are connected to opposite ends of the pipe, respectively. An expansion pipe joint fixed to a fixing member and connected to the two connection pipes; and two guides for holding the connection pipes so as to be movable in the axial direction, respectively. The two guides are provided integrally with a mounting frame installed at an installation location.

According to a third aspect of the present invention, in the first or second aspect, the expansion joint is connected to the upstream and downstream connection pipes through end pipes provided at both ends. I do.

According to a fourth aspect, in the first, second, or third aspect, the fixing member is attached to the attachment frame so as to be adjustable in height.

According to a fifth aspect of the present invention, a fixing member having a connecting pipe and a guide having a connecting pipe movably held in an axial direction are mounted on a mounting frame to unitize them. Installing at the installation location together with a fixing member and a guide, connecting the two connecting pipes to a telescopic joint, and connecting an upstream pipe and a downstream pipe to opposite ends of the two connecting pipes at opposite ends. Connecting each side pipe.

According to a sixth aspect of the present invention, there is provided a process of mounting two guides each having a fixing member fixed to an expansion joint and a connecting pipe movably held in an axial direction on a mounting frame to unitize them. Installing the mounting frame together with the telescopic joint, the fixing member, and the guide at an installation location, and setting opposite ends of the two connection pipes opposite to each other to an upstream pipe and a downstream pipe, respectively. And a connecting step.

In the present invention, since the mounting frame, the fixing member and the guide are integrated into one unit, there is no need to mount the fixing member or the guide on the mounting frame at the installation site, and it is possible to secure stable quality and construction time and to reduce costs. Can be reduced. Moreover, troublesome design calculation of the main fixed point becomes unnecessary.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on an embodiment shown in the drawings. FIGS. 1A and 1B are views showing a basic installation example of the expansion joint device according to the present invention. The same components as those shown in the section of the prior art are denoted by the same reference numerals, and the description thereof will be omitted as appropriate. FIG. 1A shows an example in which a single bellows type expansion joint (hereinafter also referred to as an expansion joint) 5, a guide 6, a fixing member 20A and a mounting frame 22 constitute an expansion joint device 25. The pipe 3 (3A, 3B) forms a main fixing point by fixing both ends of the straight pipe portion with fixing members 20A, 20B, respectively. One end of the telescopic joint 5 is connected to the pipe 3A through a connecting pipe 44A described later near the main fixing point (20A) of the present invention. On the other hand, the opposite end of the main fixing point (20B) of the pipe 3B constructed by the equipment contractor is connected to the other end of the telescopic joint 5 through a connecting pipe 44B described later, and is axially moved by a guide 6 in the axial direction. It is held movably. The guide 6 and the fixing member 20 are provided integrally with the mounting frame 22, and form a frame unit together with the mounting frame 22. The mounting frame 22 is installed at a predetermined installation location of the skeleton, for example, at the ceiling 1. In addition, piping 3
The intermediate portion of B is supported by a plurality of pipe support members 7 and a pipe guide member 26 so as to be movable in the axial direction. In the present embodiment, the pipe 3A is shown as the upstream pipe and the pipe 3B is shown as the downstream pipe, but the reverse is also possible.

The telescopic pipe joint 5 includes a joint body 5A and upstream and downstream end pipes 23A and 23B provided at both ends of the joint body 5A. The downstream pipe 3
The vicinity of the downstream end pipe 23B of B is connected to the guide 6 so as to be movable in the axial direction by the guide 6. The expansion joint 5 will be described later.

FIG. 1B shows a double bellows type expansion joint (hereinafter, also referred to as an expansion joint) 8, two guides 6,
Intermediate fixing member (fixing member) 10 and mounting frame 22
The example which comprised the expansion-contraction pipe joint apparatus 30 by this is shown. The ends of the pipes 3A and 3B opposite to the ends facing each other form main fixing points by being fixed by fixing members 20A and 20B constructed by an equipment supplier. Piping 3A,
The opposite end of 3B is connected to the expansion joint 8 via connecting pipes 44A and 44B described later, and is held by the guide 6 so as to be movable in the axial direction. The expansion joint 8 has a joint main body 31 and end pipes 32A and 32B. The intermediate fixing member 10 is attached to an intermediate portion of the joint main body 31. The two guides 6 and the intermediate fixing member 10 to which the telescopic joint 8 is mounted are integrally provided on the mounting frame 22, thereby forming a frame unit.

The distance L 1 between the expansion joint 5 and the guide 6 is
The length is preferably short in order to eliminate the influence of bending (buckling) of the pipe 3 due to expansion and contraction. The distance L between the main fixed points (20A, 20B) differs depending on the maximum amount of expansion and contraction that the expansion joint 5 can absorb. For example, the single bellows type expansion joint 5 has a maximum expansion and contraction amount of 35 mm (elongation of 25 mm and contraction of 10 mm). If the pipe is a steel pipe and the temperature difference between the atmosphere and the fluid is 120 ° C., the thermal expansion coefficient of the pipe is 0. Since it is 012 mm / m ° C., the length of the pipe is 35 (mm) ÷ 0.012 (m
m / m ° C) ÷ 120 (° C) ≒ 24 m. Therefore, the distance L between the main fixed points is set to about 24 m.

FIG. 1A shows an example in which a single type bellows type expansion joint 5 is used, and FIG. 1B shows an example in which a double type bellows type expansion joint 8 is used. The present invention is not limited to this, and may be a sleeve type expansion joint.

Next, a specific embodiment of the present invention will be described. FIG. 2 is a front view showing an example in which the expansion joint device according to the present invention is installed on a ceiling, FIG. 3 is an enlarged sectional view of a main part of the expansion joint, FIG. 4 is a view showing an example of a pipe guide member, and FIG. 6 is a sectional view taken along line VV of FIG. 2, FIG. 6 is a sectional view taken along line VI-VI of FIG. 2, FIG. 7 is a sectional view taken along line VII-VII of FIG.
9 is a cross-sectional view of a portion A of FIG. 7, and FIG. 9 is a cross-sectional view of a portion B of FIG. In these figures, the expansion joint device 40 includes an attachment frame 22 attached to the ceiling 1 via the bracket 2,
A single bellows-type telescopic joint 5 for connecting the opposed end faces of the upstream pipe 3A and the downstream pipe 3B, a fixing member 41 whose main fixing point is the downstream end of the upstream pipe 3A, and a downstream pipe 3B And a guide 42 for holding the upstream end portion of the guide member movably in the axial direction.

Connection pipes 44A and 44B are respectively flange-connected to ends of the upstream pipe 3A and the downstream pipe 3B which are opposed to each other and are connected by the telescopic joint 5. The downstream end of the downstream pipe 3B is fixed by a fixing member (not shown) similar to the fixing member 41,
The intermediate portion is movably held in the axial direction by a piping guide member 26 shown in FIG. This piping guide member 2
6 is a drum-shaped roller 45 for movably supporting the pipe 3B.
And a U-shaped fitting 46 for restricting the upward and lateral movement of the pipe 3B.

The bracket 2 is formed in a box shape with a metal shaped steel or the like, and is fixed to a predetermined portion of the ceiling 1 with a plurality of anchor bolts 47 and nuts 48 (FIG. 8). As shown in FIGS. 5 and 6, the mounting frame 22 is formed of a U-shaped section steel or the like,
The telescopic pipe joint 5, the fixing member 41 and the guide 42 are integrally provided, and the bracket 2 is provided with a plurality of bolts 4.
9 and a nut 50 (FIG. 9).
It is needless to say that the mounting frame 22 can be made of a section steel such as an H-section or an L-section.

In FIG. 3, the expansion joint 5 is shown in FIG.
The same as the single bellows type expansion joint shown in (A),
It has a joint body 5A and end tubes 23A and 23B connected to both ends of the joint body 5A, respectively. The joint body 5A has an inner tube 52, a bellows 35 fitted to the outer periphery of the inner tube 52, and both ends fixed to the end tubes 23A and 23B, and an upstream end covering the bellows 35 and having an upstream end. The outer tube 36 is fixed to the side end tube 23A with bolts. An elongated hole 53 that is long in the axial direction is formed on the peripheral surface of the outer tube 36. The long hole 53 is for defining the maximum expansion and contraction amount of the pipe 3, and the downstream end pipe 23 </ b> B
A stopper pin 54 integrally protruding from the outer periphery of the member is slidably inserted. The downstream end tube 23B integrally has a flange 58 as shown in FIG.
Is connected closely to a flange 59 provided on the connection pipe 44B via a packing 60 and is fastened by a plurality of bolts 61 and nuts 62 to connect the connection pipe 44B and the end pipe 23B. Similarly, the upstream end tube 23
A has a flange 56 integrally as shown in FIG.
This flange 56 is the flange 5 of the upstream connection pipe 44A.
The connection pipe 44A and the end pipe 23A are connected to each other through a packing (not shown) and fastened with a plurality of bolts and nuts.

In FIG. 5, the fixing member 41 is formed of metal or the like, and its base is positioned and fixed at a predetermined position of the mounting frame 22 with a plurality of bolts 63 with high accuracy. Joined by welding.

The guide 42 is vertically divided as shown in FIG. 6, so that the base is fixed to the mounting frame 22 with a plurality of bolts 65 and is integrated with the guide support member 72 and the plate 71. And a second guide member 42B detachably fixed to a distal end surface of the first guide member 42A with a plurality of bolts 66. Inside the first guide member 42A and the second guide member 42B, guide members (hereinafter also referred to as heat insulation members) 73 and 74 having a split structure and also serving as a heat insulator are inserted and fixed (or held), and the connection pipe is connected. Insertion hole 6 into which 44B is slidably inserted.
7 (FIG. 2) is formed, and the expansion and contraction of the insertion hole 67 and the bellows 35 enables the pipe 3B to expand and contract in the axial direction. In the present embodiment, an example in which the bellows-type expansion joint 5 is used is shown. However, the present invention is not limited to this, and a sleeve-type expansion joint using a sleeve and packing may be used.

The guide member 42A is attached to the mounting frame 22.
In order to attach to the mounting frame 22, as shown in FIG.
The plate 70 is firmly fixed to the opening of the fixing member 41 by welding or the like, and the plate 71 integrally provided at the base of the fixing member 41 (the guide 42 is also the same) is fixed to the plate 70 with a plurality of bolts 65 and nuts. Thereafter, the mounting frame 22 is fixed to the bracket 2 with bolts 49 and nuts 50 (FIG. 9) (FIG. 9A). Or the fixing member 41
Plate 71 is fixed to the plate 70 via a height adjustment table 72 corresponding to the height of the connection pipe 44A, and the mounting frame 2
2 is fixed to the bracket 2 (FIG. B), or a spacer having an appropriate plate thickness is provided between the bracket 2 and the mounting frame 22 and between the mounting frame 22 and the plate 70 instead of the height adjusting table 72. Alternatively, it is fixed by being interposed between the plate 70 and the plate 71. In the present embodiment, an example in which the mounting frame 22 is installed on the ceiling 1 via the bracket 2 is shown. However, the bracket 2 is not necessarily required, and as shown in FIG. It may be fixed to a skeleton such as 1.

The expansion / contraction pipe joint device 40 thus configured
When the mounting frame 22 is installed on the ceiling of the site, the mounting frame 22 on which the fixing member 41 and the guide 42 are mounted is transported to the installation site, and the mounting frame 22 is attached to the bracket 2.
Only need to be fixed with bolts 49 and nuts 50 (FIG. 9). However, when the mounting frame 22 is directly installed on the ceiling 1, the bracket 2 is unnecessary. Then, the upstream pipe 3A and the downstream pipe 3B are connected to the connection pipes 44A and 44B, respectively, thereby completing the installation of the expansion joint device 40.

At the time of installation of the expansion joint device 40,
When the size of the unit is large, the weight increases, so that it is possible to once disassemble the one assembled in the factory, reassemble it on site, and attach it. That is, the expansion joint 5, the fixing member 41, the guide 42, and the connection pipes 44A, 4A.
4B is disassembled from the mounting frame 22, and only the mounting frame 22 is first mounted on the ceiling 1 directly or via the bracket 2. Next, the fixing member 41 to which the connecting pipe 44A has been joined.
Then, the guide 42 assembled with the connection pipe 44B is attached to the attachment frame 22 again. Thereafter, the expansion joint 5 is flange-joined between the connecting pipes 44A and 44B so that the axes are aligned. In this mounting, since only the components that were previously mounted at the time of shipment are re-assembled, the mounting accuracy does not greatly change.

Further, the pipes 3A, 3B are connected to the connecting pipes 44A,
44B. In this case, when the pipes 3A and 3B have not been installed yet, the pipes 3A and 3B are constructed and flange-joined while the axes are aligned with the connection pipes 44A and 44B.

When connecting the pipes, the pipes 3A and 3B are constructed while taking into account the axis of the pipes indicated in the drawing and the state of the connection flange of the expansion joint 5. In addition, the adjustment of the axis of the pipe of several mm is performed while checking the drawing and the actual situation of the actual site in advance and adjusting the height using the height adjusting member 72 shown in FIG. 10B or a spacer having an appropriate thickness. . In addition,
The following operation can be performed without using the height adjusting member 72 and the spacer. The welded joint between the fixing member 41 and the connection pipe 44A or the plate 71 and the welded joint between the guide support member 72 and the plate 71 are set on site to adjust the height of the fixed member 41 and the guide support member 72 in accordance with the axis of the pipe. After adjustment, welding can be performed.

Further, the downstream connection pipe 44B is inserted between the downstream pipe 3B and the end pipe 23B so that the first guide member 4
The downstream pipe 3B, the connection pipe 44B, and the end pipe 23B are connected to each other via a flange with their axes aligned in this state. Thereafter, the other heat retaining member 74 is connected to the connecting pipe 4.
4B, and then fix the second guide member 42B to the first guide member 42A, thereby completing the installation work of the expansion joint device 40. However, since the plate 71, the guide support member 72, and the first and second guide members 42A and 42B are usually integrated with the connection pipe 44B, the connection pipe 4
4B may be flanged to the end tube 23B.

When the connecting pipes 44A and 44B are manufactured, the pipes 3A and 3B are
If the installation of the connection pipes 44A and 44B is completed in advance, the connection pipes 44A and 44 have a length corresponding to the distance between the facing end faces of the pipes 3A and 3B.
B can be manufactured in advance.

Thus, the expansion joint device 4 according to the present invention.
In the case of No. 0, since the fixing member 41 and the guide 42 are integrally attached to the mounting frame 22 in advance and these are made into a unit, it is only necessary to transport this unit to the installation site and install the mounting frame 22. Member 4
The mounting work for mounting the guide frame 1 and the guide 42 to the mounting frame 22 is unnecessary. Therefore, installation work on site can be performed easily and in a short time. Also, the fixing member 4
1 and the guide 42 are mounted at the time of manufacturing the mounting frame 22, so that the mounting can be performed with high dimensional accuracy and stable quality can be obtained. In addition, there is no need to order an installation of the mounting frame 22 from an external contractor. And the cost of installation work can be reduced. Also, it is advantageous for installation in a site where the work space is small. further,
There is no need for the equipment contractor to design and calculate the strength of the troublesome fixing point.

FIG. 11 is a structural view showing an example in which the present invention is applied to a double bellows type expansion joint device. Note that the same members and the like as those in the above-described embodiment are denoted by the same reference numerals, and description thereof will be omitted as appropriate. In the figure, a double telescopic joint device 80 includes a mounting frame 22 directly installed at an installation location, a telescopic double bellows type telescopic joint 8 having end pipes 81A and 81B at both ends, and a telescopic joint 8. Intermediate fixing member (fixing member) that fixes the central part of
10 and two guides 42 for holding the upstream and downstream connection pipes 44A and 44B movably in the axial direction, respectively. The fixing member 10 and the two guides 42 of the expansion joint 8 constitute a frame unit by being integrally attached to the mounting frame 22, and the mounting frame 22 is a concrete foundation inside the building or a concrete foundation outside the building. 83.

In order to install such an expansion joint device 80 at the installation site, the intermediate fixing member 10 and the guide 42 of the expansion joint 8 are set in the same manner as in the embodiment shown in FIG.
Is attached to the mounting frame 22 to integrate them into a frame unit. The frame unit is transported to an installation site, and the mounting frame 22 is installed at a predetermined position on the foundation 83. When transporting the frame unit,
The expansion joint 8 is fixed to the mounting frame 22 via the intermediate fixing member 10. However, when the unit becomes heavy, it is temporarily disassembled and mounted via the intermediate fixing member 10 after the mounting frame 22 is installed. It may be reattached to the frame 22. Then, upstream piping 3A
And the connection pipes 44A, 44B of the downstream pipe 3B are connected to the end pipes 81A, 81B of the expansion joint 8, and these connection pipes 44 are connected.
A and 44B are held by a guide 42 so as to be movable in the axial direction. The structure of the double type expansion joints 8 is basically the same as that of the single type expansion joint 5 described above.

In such an expansion joint device 80 as well, the mounting frame 22, the intermediate fixing member 10 and the guide 42
Are not unitized, it is not necessary to mount the intermediate fixing member 10 and the guide 42 on the mounting frame 22 at the site, and the installation work at the site can be performed easily and in a short time. Further, the intermediate fixing member 10 and the guide 4
Since 2 is attached at the time of manufacturing the attachment frame 22, it can be attached with high dimensional accuracy, and stable quality can be secured. In addition, since there is no need to place an order for the installation of the mounting frame 22 to an external contractor, it is possible to secure the work period and reduce the cost of the installation work. Further, the equipment contractor does not need to calculate and calculate the troublesome strength of the fixing point.

FIG. 12 is a block diagram showing still another embodiment of the present invention. In this embodiment, a single-piece sleeve-type expansion joint 90 is used, and the fixing member 41 and the guide 42 are attached to the mounting frame 22 to form a unit, thereby forming an expansion joint device 91, and the mounting frame 22 is attached to a wall surface 92 of a building. An example of vertical installation is shown. In the present embodiment, the connection pipe 44A of the upstream pipe 3A is connected to the guide 42.
To be movable in the axial direction by the
Is fixed to the fixing member 41. Other configurations are the same as those of the embodiment of the installation of the ceiling horizontal piping shown in FIG. Since the sleeve type expansion joint 90 is conventionally known, a detailed description and illustration thereof will be omitted.

Here, the present embodiment is different from the above-described embodiment in that a sleeve type expansion joint 90 is used instead of the bellows type.
The installation work 1 is performed in exactly the same manner as the sleeve type even if the bellows type is used. Therefore, the operation and effect are exactly the same.

The present invention is not limited to the above-described embodiment, and various changes and modifications can be made without departing from the gist of the present invention. For example, the pipe 3A or the pipe 3B may be held movably in the axial direction using a guide 100 as shown in FIG. That is, this guide 1
In the case of 00, a plurality of round bars 102 having the same diameter are joined to the inner peripheral surface of the cylindrical body 101 at equal intervals in the circumferential direction, and the pipe 3A (or 3B) is moved in the axial direction by these round bars 102. It is designed to be held freely. In such a guide 100, the pipe 3A (3B) and the round bar 1
Since 02 is in line contact, friction can be reduced. Further, the guide may be held by using a roller similarly to the pipe guide member 26. In the above embodiment, since the expansion joint 5 (8) is described as a commercially available standard product, the connection tubes 44A, 4B are connected to the end tubes 23A, 23B (81A, 81B) of the expansion joint 5 (8).
Although an example in which 4B is combined is shown, for example, in the case of a single-type bellows type expansion joint, the connection flange 58 is formed by integrating the end pipe 23A and the connection pipe 44A and integrating the end pipe 23B and the connection pipe 44B. The same effect can be obtained even if 59 is omitted.

[0048]

As described above, according to the expansion joint device and the method of installing the same according to the present invention, since the mounting frame, the fixing member and the guide are integrated into a unit, this unit is transported to the installation site. Just install the mounting frame. Therefore, it is not necessary to mount the fixing member and the guide on the mounting frame on site, which is advantageous particularly for installation in a site where a work space is small, and a ceiling,
The same unit can be used even in the mounting posture of a floor or a wall, and the installation work can be performed easily and in a short time. Also, since the fixing member and the guide can be attached at the time of manufacturing the mounting frame, unlike the work at the installation site, it can be installed in a good environment without taking an unnatural posture, so the mounting dimensional accuracy is high, Stable quality is obtained. Moreover, since there is no need to order an installation of the mounting frame from an external contractor, it is possible to secure the construction period and reduce the cost of the installation and installation work. Furthermore, troublesome design calculation of the strength of the fixed point is not required.

[Brief description of the drawings]

FIGS. 1A and 1B are diagrams showing a basic installation example of an expansion joint device according to the present invention.

FIG. 2 is a front view showing an example in which the expansion joint device according to the present invention is installed on a ceiling.

FIG. 3 is an enlarged sectional view of a main part of the expansion joint.

FIG. 4 is a diagram illustrating an example of a piping guide member.

FIG. 5 is a sectional view taken along line VV of FIG. 2;

FIG. 6 is a sectional view taken along line VI-VI of FIG. 2;

FIG. 7 is a sectional view taken along line VII-VII of FIG. 2;

FIG. 8 is a sectional view of a portion A in FIG. 7;

FIG. 9 is a sectional view of a portion B in FIG. 7;

FIGS. 10A and 10B are diagrams showing another embodiment of the fixing member.

FIG. 11 is a configuration diagram showing another embodiment of the present invention.

FIG. 12 is a configuration diagram showing still another embodiment of the present invention.

FIG. 13 is a cross-sectional view showing another embodiment of the guide.

FIG. 14 is a diagram showing a mounting structure of a conventional single type expansion joint.

FIG. 15 is a diagram showing a mounting structure of a conventional double expansion joint.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Ceiling, 2 ... Bracket, 3 ... Piping, 3A ... Upstream piping, 3B ... Downstream piping, 4 ... Fixing member, 5 ... Single-type bellows type expansion joint, 6 ... Guide, 7 ... Piping support member, 8
··· Double bellows type expansion joints, 10 ····························································································································
Outer pipe, 40 ... Expansion pipe joint device, 44A, 44B ... Connection pipe, 72 ... Height adjustment member, 90 ... Sleeve type expansion pipe joint, 100 ... Guide.

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[Procedure amendment]

[Submission date] March 18, 1998

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Change

[Correction contents]

In the case of the double type expansion joint 8, an intermediate fixing member (anchor) 10 of the expansion joint 8 is used as shown in FIG.
And the bracket 2 are fixed directly or with a height adjusting component 11 interposed between these two members. Next, pipes 3A, 3
The opposite ends of B are connected to the respective ends of the expansion joint 8 with bolts and nuts, and are held by guides 6 so as to be movable in the axial direction. Further, a pipe support member 7 for supporting the weight of the pipes 3A and 3B and a guide 26 for preventing buckling of the pipes are provided at appropriate intervals as in the case of the single type. The guide 6 is provided to prevent the influence of the weight and bending of the pipes 3A and 3B from affecting the expansion joints 5 and 8, and is installed as close as possible to the expansion joint.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0028

[Correction method] Change

[Correction contents]

Next, a specific embodiment of the present invention will be described. FIG. 2 is a front view showing an example in which the expansion joint device according to the present invention is installed on a ceiling, FIG. 3 is an enlarged sectional view of a main part of the expansion joint, FIG. 4 is a view showing an example of a pipe guide member, and FIG. 6 is a sectional view taken along line VV of FIG. 2, FIG. 6 is a sectional view taken along line VI-VI of FIG. 2, FIG. 7 is a sectional view taken along line VII-VII of FIG. 2, and FIG. 9 is a sectional view of a portion B in FIG. In these figures, the expansion joint device 40 includes a mounting frame 2 mounted on a ceiling 1 via a bracket 2.
2, a single-type bellows-type telescopic joint 5 for connecting opposed end faces of the upstream pipe 3A and the downstream pipe 3B, and an upstream pipe 3
A fixing member 41 having the downstream end of A as a main fixing point, and a guide 42 for holding the upstream end of the downstream pipe 3B movably in the axial direction.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0041

[Correction method] Change

[Correction contents]

Thus, the expansion joint device 4 according to the present invention.
In the case of No. 0, since the fixing member 41 and the guide 42 are integrally mounted on the mounting frame 22 in advance and these are used as a unit , it is only necessary to transport this unit to the installation site and install the mounting frame 22. Member 41
Further, the mounting operation for mounting the guide 42 to the mounting frame 22 is unnecessary. Therefore, installation work on site can be performed easily and in a short time. Also, the fixing member 41
The guide and the guide are attached at the time of manufacture of the attachment frame 22, so that the attachment can be attached with high dimensional accuracy and stable quality can be obtained. The cost of securing and installation work can be reduced. Also, it is advantageous for installation in a site where the work space is small. Further, the equipment contractor does not need to calculate and calculate the troublesome strength of the fixing point.

[Procedure amendment 4]

[Document name to be amended] Drawing

[Correction target item name] Fig. 1

[Correction method] Change

[Correction contents]

FIG.

[Procedure amendment 5]

[Document name to be amended] Drawing

[Correction target item name] Fig. 4

[Correction method] Change

[Correction contents]

FIG. 4

[Procedure amendment 6]

[Document name to be amended] Drawing

[Correction target item name] Fig. 6

[Correction method] Change

[Correction contents]

FIG. 6

[Procedure amendment 7]

[Document name to be amended] Drawing

[Correction target item name] Fig. 7

[Correction method] Change

[Correction contents]

FIG. 7

[Procedure amendment 8]

[Document name to be amended] Drawing

[Correction target item name] FIG.

[Correction method] Change

[Correction contents]

FIG. 10

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takemi Muranaka 1-14-4-302 Kitabaya, Ota-ku, Tokyo (72) Inventor Kiyonori Murakawa 4-6-12 Morinan, Ota-ku, Tokyo Fushiman Co., Ltd. (72) Inventor Yuji Nakajima 2-28-3 Ikejiri, Setagaya-ku, Tokyo

Claims (6)

[Claims] 1. A telescopic pipe joint device which is connected in the middle of a pipe and absorbs expansion and contraction of the pipe, wherein two connecting pipes respectively connected to opposed ends of an upstream pipe and a downstream pipe constituting the pipe. A telescopic joint connected to these connecting pipes, a fixing member fixed to one of the two connecting pipes, and the other connecting pipe movably held in the axial direction. A telescopic pipe joint device comprising a guide, wherein the fixing member and the guide are integrally provided on a mounting frame installed at an installation location. 2. A telescopic pipe joint device which is connected in the middle of a pipe and absorbs expansion and contraction of the pipe, wherein two connecting pipes respectively connected to opposed ends of an upstream pipe and a downstream pipe constituting the pipe. And a telescopic pipe joint to which a fixing member is fixed and connected to the two connection pipes, and two guides for holding the connection pipes so as to be movable in the axial direction, respectively, wherein the fixing member and the two guides are provided. The expansion joint device is provided integrally with a mounting frame installed at an installation location. 3. The expansion joint according to claim 1, wherein the expansion joint is connected to upstream and downstream connection pipes through end pipes provided at both ends. Telescopic joint equipment. 4. The expansion joint device according to claim 1, wherein the fixing member is attached to the mounting frame so as to be adjustable in height. 5. A step of attaching a fixing member having a connecting pipe and a guide having a connecting pipe movably held in an axial direction to a mounting frame to unitize them, and connecting the mounting frame to the fixing member and the guide. Together with the step of installing at the installation location, the step of connecting the two connecting pipes to the expansion joint, and the upstream pipe and the downstream pipe at the opposite end of the two connecting pipes opposite to each other Connecting a telescopic pipe joint device. 6. A step of attaching two guides each having a fixing member fixed to an expansion joint and a connecting pipe movably held in an axial direction to a mounting frame to unitize them, and said mounting frame. The expansion joint,
A step of installing together with a fixing member and a guide at an installation location, and a step of connecting ends of the two connection pipes opposite to ends facing each other to an upstream pipe and a downstream pipe, respectively. Installation method of expansion joint device.