JP2017106507A - Support device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a support device which enables improvement of a restraining force of a pipeline.SOLUTION: A support device 10 connects a pipeline 1 with a support body 11 and supports the pipeline 1. The support device 10 includes: a grip member 2 having a housing part which houses at least a part of a flange of the pipeline 1; and a fixing member 6 which is provided so as to be connected with the support body 11 and enclose the grip member 2 and fixes the grip member 2 to the support body 11. Preferably, the support device 10 includes: a protruding part 3 which protrudes from an outer peripheral wall part of the grip member 2 to a radial outer side of the grip member 2; and a restraint member 7 which is provided on an inner surface of the fixing member 6 and engages with the protruding part 3.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a support device that supports a piping system disposed in a structure.

  Piping systems arranged in structures such as chemical plants and power generation facilities are supported and restrained by a supporting device so as to suppress displacement due to earthquakes, heat, or the like.

  As this type of support device, there is a device that supports and restrains piping by tightening an outer peripheral surface with a band lug restrained by a frame-like structure (see Patent Document 1 and the like).

JP 61-92382 A

  In patent document 1, the displacement to the center-axis direction of piping is restrained with the frictional force which arises in the contact surface of the outer peripheral surface of piping, and the internal peripheral surface of a band lug. However, if the force in the central axis direction acting on the pipe due to an earthquake, heat, or the like becomes larger than the above frictional force, there is a possibility that the displacement of the pipe in the axial direction cannot be constrained.

  The present invention has been made in view of the above, and an object of the present invention is to provide a support device capable of improving the restraining force of piping.

  In a support device for connecting and supporting a pipe to a support, a gripping member having a housing portion that houses at least a part of the flange of the pipe, and being provided so as to be connected to the support and surround the gripping member, And a fixing member that fixes the gripping member to the support.

  ADVANTAGE OF THE INVENTION According to this invention, the support apparatus which can improve the restraint force of piping can be provided.

It is a figure which shows the example of application of the support apparatus which concerns on 1st Embodiment of this invention. It is arrow sectional drawing of the II-II line | wire of FIG. It is a schematic block diagram of the band which concerns on 1st Embodiment of this invention. It is a figure which shows the state which the lug and the restraint member engaged. It is a figure which shows the state which mounted | wore piping with the band which concerns on 1st Embodiment of this invention. It is a figure which shows the state which fixed the band which concerns on 1st Embodiment of this invention to piping. It is a figure which shows the state which mounted | wore piping with the band which concerns on 2nd Embodiment of this invention. It is a figure which shows the state which the lug and the restraint member engaged. It is a figure which shows the state which fixed the band which concerns on 3rd Embodiment of this invention to piping. It is a figure which shows the state which fixed the band which concerns on 4th Embodiment of this invention to piping. It is a figure which shows the state which fixed the band which concerns on 5th Embodiment of this invention to piping.

<First Embodiment>
(Constitution)
1. Support Device FIG. 1 is a diagram illustrating an application example of a support device according to the present embodiment. As shown in FIG. 1, the support apparatus 10 which concerns on this embodiment is provided in the flange of piping, and connects and supports piping to a support. The support is a basis for connecting and supporting the pipe, and is, for example, a fixed object such as a floor surface or a wall surface in the vicinity of the pipe. In this embodiment, the case where the piping is the piping 1 (1a, 1b) arranged in the reactor containment facility 100 of the nuclear power generation facility and the support is the floor surface 11 of the reactor containment facility 100 is illustrated.

  2 is a cross-sectional view taken along line II-II in FIG. As shown in FIG. 2, the support device 10 according to this embodiment includes a band 2, a lug 3, a fixing member 6, and a restraining member 7.

1-1. Band FIG. 3 is a schematic configuration diagram of a band according to the present embodiment. As shown in FIG. 3, the band (gripping member) 2 according to this embodiment includes a first band portion 2A and a second band portion 2B. In the present embodiment, the first and second band portions 2A and 2B are half-shaped casings. The first and second band portions 2A and 2B include a main body portion 20 and a flat plate portion 4, respectively. Hereinafter, although the 2nd band part 2B is demonstrated, the 1st band part 2A is also the same structure.

  The main body portion 20 includes an outer peripheral wall portion 17 and an end wall portion 21.

  The outer peripheral wall portion 17 is a peripheral body portion of the main body portion 20 and has a trough shape obtained by bending a plate material into a semicircular arc shape. When the band 2 is attached to the pipe 1 (hereinafter simply referred to as “when attached”). Cover the outer periphery of the flange 5 of the pipe 1. At the time of mounting, the inner peripheral surface 23 of the outer peripheral wall portion 17 faces the outer peripheral surface of the flange 5 (including a configuration in which the inner peripheral surface 23 contacts the flange 5 and a configuration in which the inner peripheral surface 23 opposes through a gap).

  The end wall portion 21 is a semi-disc-shaped portion that covers both ends of the outer peripheral wall portion 17 in the direction in which the central axis of the pipe 1 extends (hereinafter simply referred to as “axial direction”). Located on both sides in the axial direction. The outer peripheral portion of the end wall portion 21 is connected to and integrated with the end portion of the outer peripheral wall portion 17 in the axial direction. At the time of mounting, the inner peripheral surface 22 of the end wall portion 21 faces the outer peripheral surface of the pipe 1 (including a configuration in which the inner peripheral surface 22 contacts the pipe 1 and a configuration in which the inner peripheral surface 22 faces through a gap). A wall surface (hereinafter referred to as “flange facing surface 24”) that faces the flange 5 in the axial direction when the end wall portion 21 is mounted extends in the radial direction of the pipe 1. The flange facing surface 24 may be a conical surface or a curved surface, but in this embodiment, it is a plane orthogonal to the pipe 1. The inner peripheral surface 22 of the end wall portion 21 has a smaller diameter than the inner peripheral surface 23 of the outer peripheral wall portion 17.

  Since the outer peripheral wall portion 17 and the end wall portion 21 are configured in this way, the second band portion 2B is formed with the accommodating portion 12 that accommodates the flange 5 of the pipe 1 when attached. The accommodating portion 12 is a bottomed cylindrical (strictly semicylindrical) space defined by the inner peripheral surface 23 of the outer peripheral wall portion 17 and the flange facing surface 24 of the end wall portion 21. Although there may be a configuration in which only a part of the flange 5 is accommodated in the accommodating portion 12 depending on the diameter of the inner peripheral surface 22 of the end wall portion 21, the accommodating portion 12 of the present embodiment accommodates substantially the entire flange 5. It is as composition to do. The accommodating part 12 of this embodiment accommodates the bolt 18 that fastens the flange 5 together with the flange 5. That is, in this embodiment, the axial width of the accommodating portion 12 is set to a dimension including the protruding length from the flange surface of the bolt 18 that fastens the flange 5, and the flange facing surface 24 and the end portion of the bolt 18. (Including a configuration in which the flange facing surface 24 is in contact with the end portion of the bolt 18 and a configuration in which the flange facing surface 24 is opposed through a gap).

  The flat plate portion 4 is attached to both end portions in the circumferential direction of the main body portion 20 as viewed from the axial direction, and extends outward from the outer peripheral wall portion 17 of the main body portion 20 in the radial direction of the main body portion 20. A plurality (two in this embodiment) of bolt holes 13 are formed in the flat plate portion 4 side by side in the axial direction. The bolt hole 13 of the first band part 2A and the bolt hole 13 of the second band part 2B are provided so as to face each other when mounted.

1-2. The lug lug (projecting part) 3 is a block formed in a quadrangular shape (in the present embodiment, a rectangular parallelepiped shape), and the diameter of the second band part 2B from the outer peripheral wall part 17 of the main body part 20 of the second band part 2B. It is provided so as to protrude outward in the direction. A plurality of lugs 3 (two in the present embodiment) are arranged on the outer peripheral wall portion 17 of the main body portion 20 with an interval in the circumferential direction of the main body portion 20 as viewed from the axial direction (see FIG. 2). In the present embodiment, the lug 3 is attached to the outer peripheral wall portion 17 by welding or the like.

1-3. Fixing Member As shown in FIG. 2, the fixing member 6 is connected to the floor surface 11 and is provided so as to surround the band 2, and fixes the band 2 to the floor surface 11. The fixing member 6 includes a support member 18 (18a to 18d). The support members 18a and 18b are attached to the floor surface 11 of the reactor containment facility 100 via, for example, hardware (not shown), and are erected upward from the floor surface 11. The support member 18 c is attached to the support members 18 a and 18 b so as to be positioned between the band 2 and the floor surface 11, and covers the lower side of the band 2. The support member 18d is attached to the support members 18a and 18b so as to face the support member 18c with the band 2 interposed therebetween, and covers the upper side of the band 2.

1-4. FIG. 4 is a diagram illustrating a state where the lug and the restraining member are engaged. As shown in FIGS. 2 and 4, the restraining member 7 (7 a to 7 d) is attached to the inner surface 20 (20 a to 20 d) of the support members 18 a to 18 d. In this embodiment, the restraining member 7 is formed in a gate shape (a U-shape) having a recess 29 into which the lug 3 can be inserted, and the lug 3 is inserted into the recess 29 in the radial direction of the pipe 1. Thus, the lug 3 and the restraining member 7 are engaged with each other. In the present embodiment, the restraining member 7 is formed of an elastic body (such as rubber or a spring).

(installation method)
FIG. 5 is a diagram illustrating a state in which the band according to the present embodiment is attached to the pipe, and FIG. 6 is a diagram illustrating a state in which the band according to the present embodiment is fixed to the pipe. Hereinafter, a method for attaching the support device 10 according to the present embodiment to the pipe 1 will be described.

・ Step 1
As shown in FIG. 5, the first and second band portions 2 </ b> A and 2 </ b> B are attached to the pipe 1 by pushing the first band portion 2 </ b> A and the second band portion 2 </ b> B toward the pipe 1 so as to sandwich the pipe 1. At this time, the flange 5 and the bolt 18 that fastens the flange 5 are accommodated in the accommodating portions 12 of the first and second band portions 2A and 2B (see FIG. 6).

・ Step 2
After the first and second band portions 2A and 2B are attached to the pipe 1, the first and second band portions 2A and 2B are fastened with bolts 19 as shown in FIG. Thereby, the band 2 is fixed to the pipe 1.

  In order to enhance the seismic strength of the containment facility and improve safety, a support device may be attached to existing piping. As a method of attaching a support device to an existing pipe, there is a method of attaching a band to the pipe by welding. However, in this method, since it is necessary to remove the existing piping, the work may become large-scale. In addition, in general, a rubber or polyethylene film is attached to the inside of the pipe to prevent rust from being generated by the seawater flowing inside (lining). The film may melt under the influence of heat. On the other hand, in the present embodiment, the first band portion 2A and the second band portion 2B are pushed toward the piping 1 so as to sandwich the piping 1, and the first and second band portions 2A and 2B are attached to the piping 1. Therefore, the work scale can be reduced as compared with the method of attaching the band to the pipe by welding, and in addition, the film formed inside the pipe can be prevented from melting.

・ Step 3
After fixing the band 2 to the pipe 1, the support members 18a and 18b are attached to the floor 11 so that the lug 3 of the band 2 engages with the restraining members 7a and 7b (see FIG. 2).

・ Step 4
After attaching the supporting members 18a and 18b to the floor surface 11, the supporting member 18c is attached to the supporting members 18a and 18b so that the lug 3 of the band 2 engages with the restraining member 7c (see FIG. 2).

・ Step 5
After attaching the support member 18c to the support members 18a and 18b, the support member 18d is attached to the support members 18a and 18b so that the lug 3 of the band 2 engages with the restraining member 7d (see FIG. 2). The support device 10 can be attached to the pipe 1 by the procedure described above.

(effect)
In the present embodiment, since the flange 5 of the pipe 1 is accommodated in the accommodating portion 12 of the band 2 and the pipe 1 is fixed to the floor surface 11, the axial displacement of the flange 5 is changed to the flange facing surface 24 of the accommodating portion 12. Can be received and restrained. Accordingly, the restraining force of the pipe 1 can be improved as compared with the case where the displacement in the central axis direction of the pipe is restrained by the frictional force generated on the contact surface between the outer peripheral face of the pipe and the inner peripheral face of the band.

  In the present embodiment, since the lug 3 protruding from the outer peripheral wall portion 17 of the band 2 and the restraining member 7 provided on the inner surface of the fixing member 6 are engaged, the pipe 1 is fixed to the fixing member 6. The displacement of the lug 3 in the central axis direction of the pipe 1 can be restrained by the restraining member 7, and the restraining force of the pipe 1 can be further improved accordingly.

Second Embodiment
(Constitution)
FIG. 7 is a view showing a state in which the band according to the present embodiment is attached to the pipe, and FIG. 8 is a view showing a state in which the lug and the restraining member are engaged. 7 and 8, the same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted as appropriate.

  The support device according to the present embodiment is different from the support device 10 according to the first embodiment in that the shapes of the lug and the restraining member are different. Other configurations are the same as those of the support device 10 according to the first embodiment.

  As shown in FIGS. 7 and 8, the lug 25 according to the present embodiment is formed in a gate shape (a U-shape) having a concave portion 26 into which a later-described restraining member 27 can be inserted. Other configurations are the same as those of the lug 3 according to the first embodiment.

  As shown in FIG. 8, the restraining member 27 according to the present embodiment is a block formed in a square shape. In this embodiment, the lug 25 and the restraining member 27 are engaged with each other by the restraining member 27 being inserted into the recess 26 of the lug 25 in the radial direction of the pipe 1.

  Even when the lug 25 is formed in a gate shape and the restraining member 27 is formed in a quadrangular shape as in the present embodiment, the same effect as in the first embodiment can be obtained.

<Third Embodiment>
(Constitution)
FIG. 9 is a diagram illustrating a state in which the band according to the present embodiment is fixed to the pipe. In FIG. 9, parts that are the same as in the first embodiment are given the same reference numerals, and descriptions thereof are omitted as appropriate.

  The support device according to the present embodiment is different from the support device 10 according to the first embodiment in that the shape of the band is different. Other configurations are the same as those of the support device 10 according to the first embodiment.

  As shown in FIG. 9, the end wall portion 221 of the band 202 according to this embodiment has a flange 5 and a flange 5 that are radially outward of the pipe 1 than the bolt 18 that fastens the flange 5 of the pipe 1 when viewed from the axial direction. It is formed so as to face each other. That is, in the present embodiment, the housing portion of the band 202 houses the outer edge portion of the flange 5. Other configurations are the same as those of the band 2 according to the first embodiment.

  Also in this embodiment, the same effect as the first embodiment can be obtained. In addition, in the present embodiment, the following effects can be obtained.

  In this embodiment, the end wall 221 of the band 202 is formed so as to face the flange 5 outside the bolt 18 that fastens the flange 5, so that the bolt 18 can be seen from the outside of the band 202. Therefore, it is possible to check the looseness and other conditions of the bolt 18 without removing the band 2 from the pipe 1. If the bolt 18 is loose, the bolt 18 remains fixed to the pipe 1. Can be tightened.

  In the present embodiment, the end wall portion 221 of the band 202 is formed so as to release the bolt 18 that fastens the flange 5. Therefore, it is not necessary to set the axial width of the accommodating portion 12 to a dimension including the protruding length of the bolt 18 from the flange surface, and accordingly, the axial thickness of the end wall portion 221 is more than that of the first embodiment. It can be secured greatly.

  Moreover, in this embodiment, in order to restrain the flange 5 by applying the flange 5 to the end wall part 221 of the band 202, the structure which restrains the flange 5 by applying the edge part of the volt | bolt 18 which fastens the flange 5 to an end wall part. In comparison with this, the surface pressure generated on the surface of the end wall portion facing the flange 5 can be reduced.

<Fourth embodiment>
(Constitution)
FIG. 10 is a diagram illustrating a state in which the band according to the present embodiment is fixed to the pipe. In FIG. 10, parts that are the same as in the first embodiment are given the same reference numerals, and descriptions thereof are omitted as appropriate.

  The support device according to the present embodiment is different from the support device 10 according to the first embodiment in that the shape of the band is different. Other configurations are the same as those of the support device 10 according to the first embodiment.

  As shown in FIG. 10, in this embodiment, the slit 28 is formed in the end wall portion 321 of the band 302 so as not to interfere with the bolt 18 that fastens the flange 5. The slit 28 extends from the inner peripheral portion of the end wall portion 321 toward the radially outer side of the pipe 1 when viewed from the axial direction. Other configurations are the same as those of the band 2 according to the first embodiment.

  Even when the slit 28 is formed in the end wall 321 of the band 302 so as not to interfere with the bolt 18 that fastens the flange 5 as in the present embodiment, the same effect as in the third embodiment can be obtained.

<Fifth Embodiment>
(Constitution)
FIG. 11 is a diagram illustrating a state in which the band according to the present embodiment is fixed to the pipe. In FIG. 11, parts that are the same as in the first embodiment are given the same reference numerals, and descriptions thereof are omitted as appropriate.

  The support device according to the present embodiment is different from the support device 10 according to the first embodiment in that the shape of the band is different. Other configurations are the same as those of the support device 10 according to the first embodiment.

  As shown in FIG. 11, in the present embodiment, a through hole 30 through which the bolt 18 that fastens the flange 5 is penetrated is formed in the end wall portion 421 of the band 402. In the present embodiment, the through hole 30 is formed so as to face a bolt hole (not shown) into which the bolt 18 formed on the flange 5 can be inserted when mounted, when viewed from the axial direction. In this embodiment, after fixing the band 402 to the pipe 1, the bolt 18 is inserted into the through hole 30 of the band 402, and the band 402 and the flange 5 of the pipe 1 are fastened together. Other configurations are the same as those of the band 2 according to the first embodiment.

  As in the present embodiment, even when the through hole 30 through which the bolt 18 that fastens the flange 5 is formed is formed in the end wall portion 421 of the band 402, the same effect as in the third embodiment can be obtained.

<Others>
The present invention is not limited to the above-described embodiments, and includes various modifications. For example, each of the above-described embodiments has been described in detail for easy understanding of the present invention, and is not necessarily limited to one having all the configurations described. For example, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment.

  In each of the above-described embodiments, the lug 3 protruding from the outer peripheral wall surface 17 of the band 2 and the restraining member 7 attached to the inner surface of the fixing member 6 are engaged with each other, and the band 2 is connected to the nuclear reactor via the fixing member 6. The structure fixed to the floor surface 11 of the storage facility 100 was illustrated. However, the essential effect of the present invention is to provide a support device that can improve the restraining force of the pipe, and the configuration is not necessarily limited to the above-described configuration as long as this essential effect is obtained. For example, it is good also as a structure which connects the outer peripheral surface of the band 2, and the inner surface of the fixing member 6, and fixes the band 2 to the floor surface 11 of the nuclear reactor containment facility 100.

  Moreover, in each embodiment mentioned above, the case where this invention was applied to the piping 1 arrange | positioned in the nuclear reactor containment facility 100 was illustrated. However, as long as the above-described essential effects of the present invention are obtained, the application target of the present invention is not limited to the piping arranged in the nuclear reactor containment facility 100 of the nuclear power generation equipment. For example, the present invention can also be applied to piping arranged in other components of nuclear power generation equipment, piping arranged in components of a chemical plant, and the like.

1 Pipe 11 Floor (support)
DESCRIPTION OF SYMBOLS 10 Support apparatus 5 Flange 12 Housing | casing part 2,102,202,302,402 Band (gripping member)
6 fixing member 17 outer peripheral wall 3 lug (protrusion)
7 Restraining member 18 Bolt 28 Slit 30 Through hole

Claims (7)

In a support device that supports piping connected to a support,
A gripping member having an accommodating portion for accommodating at least a part of the flange of the pipe;
A support device comprising: a fixing member that is connected to the support and is provided so as to surround the gripping member, and fixes the gripping member to the support. The support device according to claim 1,
A projecting portion projecting radially outward of the gripping member from an outer peripheral wall portion of the gripping member;
A support device comprising: a restraining member provided on an inner surface of the fixing member and engaged with the protruding portion. The support device according to claim 1,
The support device is characterized in that the storage portion stores an outer edge portion of the flange. The support device according to claim 1,
The holding device includes a slit formed so as not to interfere with a bolt for fastening the flange. The support device according to claim 1,
The support device, wherein the gripping member includes a through hole through which a bolt for fastening the flange can pass. The support device according to claim 2,
The support device, wherein the restraining member is an elastic body. The support device according to claim 2,
One of the protruding portion and the restraining member is engaged with each other by being inserted into the other in the radial direction of the pipe.

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