JP6757296B2 - Seismic piping restraint device - Google Patents

Seismic piping restraint device Download PDF

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JP6757296B2
JP6757296B2 JP2017122461A JP2017122461A JP6757296B2 JP 6757296 B2 JP6757296 B2 JP 6757296B2 JP 2017122461 A JP2017122461 A JP 2017122461A JP 2017122461 A JP2017122461 A JP 2017122461A JP 6757296 B2 JP6757296 B2 JP 6757296B2
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pipe
screw member
axial direction
clamp
snubber
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JP2019007525A (en
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敏和 押谷
敏和 押谷
清文 鉛口
清文 鉛口
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Hitachi GE Nuclear Energy Ltd
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Description

本発明は、配管の軸方向の動きを拘束する耐震用配管拘束装置に関する。 The present invention relates to a seismic piping restraining device that restrains the axial movement of piping.

例えば原子力プラントにおいては、配管の軸方向の動きを拘束する配管拘束装置を設ける。この配管拘束装置では、一般的に、配管の外周側にラグを溶接し、ラグとプラントの躯体側の間で防振器やハンガ等を連結する。防振器は、熱膨張などによって生じる配管の緩やかな動きに追従するものの、地震などによって生じる配管の急な動きを拘束するためのものである。 For example, in a nuclear power plant, a pipe restraint device for restraining the axial movement of pipes is provided. In this pipe restraint device, a lug is generally welded to the outer peripheral side of the pipe, and a vibration isolator, a hanger, or the like is connected between the lug and the skeleton side of the plant. The vibration isolator follows the gentle movement of the pipe caused by thermal expansion or the like, but restrains the sudden movement of the pipe caused by an earthquake or the like.

特許文献1の一実施例の配管拘束装置では、配管の外周側に複数のテーパ付ストッパを溶接し、複数のテーパ付ストッパにそれぞれ嵌合する複数のテーパ付孔を有する取付バンドを取付ける。そして、取付バンドと躯体側の間でハンガを連結する。 In the pipe restraint device according to the embodiment of Patent Document 1, a plurality of tapered stoppers are welded to the outer peripheral side of the pipe, and a mounting band having a plurality of tapered holes to be fitted to the plurality of tapered stoppers is attached. Then, the hanger is connected between the mounting band and the skeleton side.

特許文献1の他の実施例の配管拘束装置では、配管の外周側に複数のテーパ付ストッパを鍛造成形したサポートコンポーネントを用意し、このサポートコンポーネントの両端に他の配管を溶接する。そして、上記一実施例と同様、取付バンドを取付け、取付バンドと躯体側の間でハンガを連結する。 In the pipe restraint device of another embodiment of Patent Document 1, a support component in which a plurality of tapered stoppers are forged is prepared on the outer peripheral side of the pipe, and other pipes are welded to both ends of the support component. Then, as in the above embodiment, the mounting band is mounted, and the hanger is connected between the mounting band and the skeleton side.

特開昭57−94184号公報Japanese Unexamined Patent Publication No. 57-94184

上述した従来技術では、ラグ、ストッパ、又はサポートコンポーネントを溶接する際に、耐圧部材である配管に溶接熱を与えるため、配管の耐圧試験や溶接検査等の手間が生じる。 In the above-mentioned conventional technique, when welding a lug, a stopper, or a support component, welding heat is applied to a pipe which is a pressure-resistant member, so that it takes time and effort for a pressure-resistant test and a welding inspection of the pipe.

本発明の目的は、容易に設置することができる耐震用配管拘束装置を提供することにある。 An object of the present invention is to provide a seismic pipe restraint device that can be easily installed.

上記目的を達成するために、代表的な本発明は、配管の軸方向一方側への動きを拘束する耐震用配管拘束装置において、前記配管のフランジにおける前記配管の軸方向一方側の端面に当接するように、前記配管の外周側に取付けられたクランプと、前記配管の軸方向に延在すると共に、一方側端部が前記クランプに連結され且つ他方側端部が躯体側に連結されたロッドレストレイント又はスナッバとを備え、前記クランプは、2つの半円環状のバンド部材と、前記2つのバンド部材の一方側端部を互いに着脱可能に連結する第1のネジ部材と、前記2つのバンド部材の他方側端部を互いに着脱可能に連結する第2のネジ部材とで構成されており、前記第1のネジ部材に第1のロッドレストレイント又はスナッバが連結され、前記第2のネジ部材に第2のロッドレストレイント又はスナッバが連結される。 In order to achieve the above object, a typical invention is a seismic pipe restraining device that restrains the movement of a pipe in one axial direction, and hits an end surface of the flange of the pipe on one side in the axial direction of the pipe. A clamp attached to the outer peripheral side of the pipe so as to be in contact with the rod, and a rod extending in the axial direction of the pipe and having one end connected to the clamp and the other end connected to the skeleton side. The clamp comprises a restraint or a snubber, and the clamp includes two semi-annular band members, a first threaded member that detachably connects one end of the two band members to each other, and the two. It is composed of a second screw member that detachably connects the other end of the band member to each other, and the first rod restraint or snubber is connected to the first screw member, and the second A second rod restraint or snubber is connected to the threaded member.

本発明によれば、配管にラグ等を溶接する必要がないため、容易に設置することができる。 According to the present invention, it is not necessary to weld a lug or the like to the pipe, so that the pipe can be easily installed.

本発明の一実施形態における耐震用配管拘束装置の構造を表す斜視図である。It is a perspective view which shows the structure of the seismic pipe restraint device in one Embodiment of this invention. 本発明の一実施形態における耐震用配管拘束装置の構造を表す側面図である。It is a side view which shows the structure of the seismic pipe restraint device in one Embodiment of this invention.

本発明の一実施形態を、図面を参照しつつ説明する。図1は、本実施形態における耐震用配管拘束装置の構造を表す斜視図であり、図2は、側面図である。 An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing the structure of the seismic pipe restraint device according to the present embodiment, and FIG. 2 is a side view.

本実施形態では、複数組の固定ボルト1及び固定ナット2を用いて配管3Aのフランジ4A及び配管3Bのフランジ4Bが互いに接続されており、配管3A,3Bの軸方向一方側及び反対側への動きを拘束する耐震用配管拘束装置が設けられている。 In the present embodiment, the flange 4A of the pipe 3A and the flange 4B of the pipe 3B are connected to each other by using a plurality of sets of fixing bolts 1 and fixing nuts 2, and the pipes 3A and 3B are connected to one side and the opposite side in the axial direction. A seismic piping restraint device that restrains movement is provided.

本実施形態の耐震用配管拘束装置は、配管3A,3Bの軸方向一方側(図1及び図2中右側)への動きを拘束するための構成として、配管3Aのフランジ4Aにおける配管3Aの軸方向一方側の端面に当接するように、配管3Aの外周側に取付けられたクランプ5Aと、配管3A,3Bの軸方向に延在すると共に、一方側端部がクランプ5Aに連結され、且つ他方側端部がプラントの躯体側(詳細には、例えば架構6又は壁など)に連結されたロッドレストレイント7A,7Bとを備える。 The seismic pipe restraint device of the present embodiment has a configuration for restraining the movement of the pipes 3A and 3B in one axial direction (right side in FIGS. 1 and 2), and has a shaft of the pipe 3A in the flange 4A of the pipe 3A. The clamp 5A attached to the outer peripheral side of the pipe 3A and the pipes 3A and 3B extend in the axial direction so as to abut on the end surface on one side in the direction, and one end is connected to the clamp 5A and the other. It is provided with rod restraints 7A and 7B whose side ends are connected to the skeleton side of the plant (specifically, for example, a frame 6 or a wall).

クランプ5Aは、2つの半円環状のバンド部材8A,8Bと、バンド部材8A,8Bの一方側端部を互いに着脱可能に連結する1組のネジ部材9A及びナット10と、バンド部材8A,8Bの他方側端部を互いに着脱可能に連結する1組のネジ部材9B及びナット10とで構成されている。バンド部材8A,8Bの一方側端部にそれぞれ形成された貫通孔にネジ部材9Aが挿通し、バンド部材8A,8Bの他方側端部にそれぞれ形成された貫通孔にネジ部材9Bが挿通し、ネジ部材9A,9Bの先端部にナット10がそれぞれ螺合することにより、バンド部材8A,8Bが配管3Aの外周面に締付けられている。また、ロッドレストレイント7A,7Bの一方側端部に形成された貫通孔にネジ部材9A,9Bがそれぞれ挿通することにより、ロッドレストレイント7A,7Bがネジ部材9A,9Bにそれぞれ連結されている。 The clamp 5A includes two semicircular band members 8A and 8B, a set of screw members 9A and nuts 10 that detachably connect one end of the band members 8A and 8B to each other, and band members 8A and 8B. It is composed of a set of screw members 9B and a nut 10 that detachably connect the other end portions of the above. The screw member 9A is inserted into the through holes formed at one end of the band members 8A and 8B, respectively, and the screw member 9B is inserted into the through holes formed at the other ends of the band members 8A and 8B. The band members 8A and 8B are tightened to the outer peripheral surface of the pipe 3A by screwing the nuts 10 into the tips of the screw members 9A and 9B, respectively. Further, the rod restraints 7A and 7B are connected to the screw members 9A and 9B by inserting the screw members 9A and 9B into the through holes formed at one end of the rod restraints 7A and 7B, respectively. ing.

ロッドレストレイント7A,7Bは、熱膨張や地震などによって生じる配管の急な動きを拘束するものである。そして、配管3Aの外周面とクランプ5Aの間で伝達される荷重だけでなく、配管3Aのフランジ4Aとクランプ5Aの間で伝達される荷重を受け、配管3A,3Bの軸方向一方側への動きを拘束するようになっている。なお、ロッドレストレイント7A,7Bに代えて、スナッバを設けてもよい。スナッバは、膨張などによって生じる配管の緩やかな動きに追従するものの、地震などによって生じる配管の急な動きを拘束するものである。 The rod restraints 7A and 7B restrain the sudden movement of the pipe caused by thermal expansion or an earthquake. Then, not only the load transmitted between the outer peripheral surface of the pipe 3A and the clamp 5A but also the load transmitted between the flange 4A and the clamp 5A of the pipe 3A is received, and the load is received on one side of the pipes 3A and 3B in the axial direction. It is designed to restrain movement. A snubber may be provided instead of the rod restraints 7A and 7B. The snubber follows the gentle movement of the pipe caused by expansion or the like, but restrains the sudden movement of the pipe caused by an earthquake or the like.

また、本実施形態の耐震用配管拘束装置は、配管3A,3Bの軸方向反対側(図1及び図2中左側)への動きを拘束するための構成として、配管3Bのフランジ4Bにおける配管3Bの軸方向反対側の端面に当接するように、配管3Bの外周側に取付けられたクランプ5Bと、配管の軸方向に延在すると共に、一方側端部がクランプ5Bに連結され且つ他方側端部がプラントの躯体側(図示せず)に連結されたロッドレストレイント7C,7Dとを備える。 Further, the seismic pipe restraint device of the present embodiment has a configuration for restraining the movement of the pipes 3A and 3B to the opposite side in the axial direction (left side in FIGS. 1 and 2), and the pipe 3B in the flange 4B of the pipe 3B. A clamp 5B attached to the outer peripheral side of the pipe 3B so as to abut on the end surface on the opposite side in the axial direction of the pipe, and one side end connected to the clamp 5B and the other side end while extending in the axial direction of the pipe. The parts are provided with rod restraints 7C and 7D connected to the skeleton side (not shown) of the plant.

クランプ5Bは、2つの半円環状のバンド部材8C,8Dと、バンド部材8C,8Dの一方側端部を互いに着脱可能に連結する1組のネジ部材9C及びナット10と、バンド部材8C,8Dの他方側端部を互いに着脱可能に連結する1組のネジ部材9D及びナット10とで構成されている。バンド部材8C,8Dの一方側端部にそれぞれ形成された貫通孔にネジ部材9Cが挿通し、バンド部材8C,8Dの他方側端部にそれぞれ形成された貫通孔にネジ部材9Dが挿通し、ネジ部材9C,9Dの先端部にナット10がそれぞれ螺合することにより、バンド部材8C,8Dが配管3Bの外周面に締付けられている。また、ロッドレストレイント7C,7Dの一方側端部に形成された貫通孔にネジ部材9C,9Dがそれぞれ挿通することにより、ロッドレストレイント7C,7Dがネジ部材9C,9Dにそれぞれ連結されている。 The clamp 5B includes two semicircular band members 8C and 8D, a set of screw members 9C and nuts 10 that detachably connect one end of the band members 8C and 8D to each other, and band members 8C and 8D. It is composed of a set of screw members 9D and a nut 10 that detachably connect the other end portions of the above. The screw member 9C is inserted into the through holes formed at one end of the band members 8C and 8D, respectively, and the screw member 9D is inserted into the through holes formed at the other ends of the band members 8C and 8D. The band members 8C and 8D are tightened to the outer peripheral surface of the pipe 3B by screwing the nuts 10 into the tips of the screw members 9C and 9D, respectively. Further, the rod restraints 7C and 7D are connected to the screw members 9C and 9D by inserting the screw members 9C and 9D into the through holes formed at one end of the rod restraints 7C and 7D, respectively. ing.

ロッドレストレイント7C,7Dは、熱膨張や地震などによって生じる配管の急な動きを拘束するものである。そして、配管3Bの外周面とクランプ5Bの間で伝達される荷重だけでなく、配管3Bのフランジ4Bとクランプ5Bの間で伝達される荷重を受け、配管3A,3Bの軸方向反対側への動きを拘束するようになっている。なお、ロッドレストレイント7C,7Dに代えて、スナッバを設けてもよい。 The rod restraints 7C and 7D restrain the sudden movement of the pipe caused by thermal expansion or an earthquake. Then, not only the load transmitted between the outer peripheral surface of the pipe 3B and the clamp 5B but also the load transmitted between the flange 4B and the clamp 5B of the pipe 3B is received, and the pipes 3A and 3B are subjected to the opposite side in the axial direction. It is designed to restrain movement. A snubber may be provided instead of the rod restraints 7C and 7D.

以上のように本実施形態においては、配管3Aのフランジ4A及び配管3Bのフランジ4Bを利用して、配管3A,3Bの軸方向一方側及び反対側への動きを拘束することができる。そして、配管3A又は3Bにラグ等を溶接する必要がなく、配管3A又は3Bの耐圧試験や溶接検査等を行う手間を省くことができるため、容易に設置することができる。特に、既設のプラントの配管に対して、容易に設置することができる。また、例えば原子力プラントの海水系配管であって、耐食性のライニング(被膜)が内面に施された配管に対して設置するのであれば、溶接熱によるライニングの損傷を回避することができる。 As described above, in the present embodiment, the flange 4A of the pipe 3A and the flange 4B of the pipe 3B can be used to restrain the movement of the pipes 3A and 3B to one side and the opposite side in the axial direction. Further, it is not necessary to weld a lug or the like to the pipe 3A or 3B, and it is possible to save the trouble of performing a pressure resistance test or a welding inspection of the pipe 3A or 3B, so that the pipe 3A or 3B can be easily installed. In particular, it can be easily installed on the piping of an existing plant. Further, for example, in the case of seawater piping of a nuclear power plant, if the piping is installed with a corrosion-resistant lining (coating) on the inner surface, damage to the lining due to welding heat can be avoided.

なお、上記一実施形態においては、配管3A,3Bの軸方向一方側及び反対側への動きを拘束するための構成を例にとって説明したが、これに限られず、本発明の趣旨及び技術思想を逸脱しない範囲内で変形が可能である。例えば、配管3A,3Bの軸方向一方側への動きを拘束するための構成だけとしてもよいし、または、配管3A,3Bの軸方向反対側への動きを拘束するための構成だけとしてもよい。 In the above embodiment, the configuration for restraining the movement of the pipes 3A and 3B in the axial direction to one side and the opposite side has been described as an example, but the present invention is not limited to this, and the gist and technical idea of the present invention will be described. Deformation is possible within the range that does not deviate. For example, it may be configured only for restraining the movement of the pipes 3A and 3B in the axial direction, or it may be configured only for restraining the movement of the pipes 3A and 3B in the axial direction. ..

また、上記一実施形態において、クランプ5Aは、2つの半円環状のバンド部材8A,8Bと、バンド部材8A,8Bの一方側端部を互いに着脱可能に連結するネジ部材9Aと、バンド部材8A,8Bの他方側端部を互いに着脱可能に連結するネジ部材9Bとで構成されており、ネジ部材9A,9Bにロッドレストレイント7A,7B(又はスナッバ)がそれぞれ連結された場合を例にとって説明した。また、クランプ5Bは、2つの半円環状のバンド部材8C,8Dと、バンド部材8C,8Dの一方側端部を互いに着脱可能に連結するネジ部材9Cと、バンド部材8C,8Dの他方側端部を互いに着脱可能に連結するネジ部材9Dとで構成されており、ネジ部材9C,9Dにロッドレストレイント7C,7D(又はスナッバ)がそれぞれ連結された場合を例にとって説明した。しかし、これに限られず、本発明の趣旨及び技術思想を逸脱しない範囲内で変形が可能である。 Further, in the above embodiment, the clamp 5A includes two semicircular ring band members 8A and 8B, a screw member 9A that detachably connects one end of the band members 8A and 8B to each other, and a band member 8A. , 8B is composed of a screw member 9B that detachably connects the other side ends of the 8B to each other, and an example is a case where rod clamps 7A and 7B (or snubbers) are connected to the screw members 9A and 9B, respectively. explained. Further, the clamp 5B includes two semicircular band members 8C and 8D, a screw member 9C that detachably connects one side end of the band members 8C and 8D, and the other end of the band members 8C and 8D. The case where the rod clamps 7C and 7D (or snubbers) are connected to the screw members 9C and 9D, respectively, is described as an example, which is composed of a screw member 9D which connects the portions to and from each other. However, the present invention is not limited to this, and modifications can be made without departing from the spirit and technical idea of the present invention.

図示しないものの、クランプ5A又は5Bは、2つの半円環状のバンド部材と、2つのバンド部材の一方側端部を互いに回動可能に連結するピン部材と、2つのバンド部材の他方側端部を互いに着脱可能に連結するネジ部材とで構成されてもよい。そして、ネジ部材にロッドレストレイント又はスナッバが連結されてもよいし、又は、2つのバンド部材のうちの少なくとも一方にラグが溶接されて、このラグにロッドレストレイント又はスナッバが連結されてもよい。このような変形例においても、上記同様の効果を得ることができる。 Although not shown, the clamps 5A or 5B include two semi-annular band members, a pin member that rotatably connects one end of the two band members to each other, and the other end of the two band members. May be composed of a screw member that detachably connects the two to each other. Then, a rod restraint or snubber may be connected to the threaded member, or a lug is welded to at least one of the two band members, and the rod restraint or snubber is connected to the lug. May be good. Even in such a modified example, the same effect as described above can be obtained.

3A,3B 配管
4A,4B フランジ
5A,5B クランプ
7A〜7D ロッドレストレイント
8A〜8D バンド部材
9A〜9D ネジ部材
3A, 3B Piping 4A, 4B Flange 5A, 5B Clamp 7A-7D Rod Restraint 8A-8D Band Member 9A-9D Screw Member

Claims (3)

配管の軸方向一方側への動きを拘束する耐震用配管拘束装置において、
前記配管のフランジにおける前記配管の軸方向一方側の端面に当接するように、前記配管の外周側に取付けられたクランプと、
前記配管の軸方向に延在すると共に、一方側端部が前記クランプに連結され且つ他方側端部が躯体側に連結されたロッドレストレイント又はスナッバとを備え
前記クランプは、2つの半円環状のバンド部材と、前記2つのバンド部材の一方側端部を互いに着脱可能に連結する第1のネジ部材と、前記2つのバンド部材の他方側端部を互いに着脱可能に連結する第2のネジ部材とで構成されており、
前記第1のネジ部材に第1のロッドレストレイント又はスナッバが連結され、前記第2のネジ部材に第2のロッドレストレイント又はスナッバが連結されたことを特徴とする耐震用配管拘束装置。
In a seismic pipe restraint device that restrains the movement of pipes in one axial direction.
A clamp attached to the outer peripheral side of the pipe so as to abut on the end surface of the flange of the pipe on one side in the axial direction of the pipe.
It is provided with a rod restraint or snubber extending in the axial direction of the pipe and having one end connected to the clamp and the other end connected to the skeleton side .
The clamp has two semicircular band members, a first screw member that detachably connects one side end of the two band members to each other, and the other end of the two band members to each other. It is composed of a second screw member that is detachably connected.
A seismic pipe restraint device, characterized in that a first rod restraint or snubber is connected to the first screw member, and a second rod restraint or snubber is connected to the second screw member. ..
配管の軸方向一方側及び反対側への動きを拘束する耐震用配管拘束装置において、
前記配管のフランジにおける前記配管の軸方向一方側の端面に当接するように、前記配管の外周側に取付けられた一のクランプと、
前記配管の軸方向に延在すると共に、一方側端部が前記一のクランプに連結され且つ他方側端部が躯体側に連結された一のロッドレストレイント又はスナッバと、
前記配管のフランジにおける前記配管の軸方向反対側の端面に当接するように前記配管の外周側に取り付けられた他のクランプと、
前記配管の軸方向に延在すると共に、一方側端部が前記他のクランプに連結され且つ他方側端部が躯体側に連結された他のロッドレストレイント又はスナッバとを備えたことを特徴とする耐震用配管拘束装置。
In a seismic pipe restraint device that restrains the movement of pipes to one side and the other side in the axial direction.
A clamp attached to the outer peripheral side of the pipe so as to abut the end surface of the flange of the pipe on one side in the axial direction of the pipe.
A rod restraint or snubber extending in the axial direction of the pipe and having one end connected to the one clamp and the other end connected to the skeleton side.
With other clamps attached to the outer peripheral side of the pipe so as to abut on the end surface of the flange of the pipe on the opposite side in the axial direction of the pipe.
It is characterized by extending in the axial direction of the pipe and having another rod restraint or snubber having one end connected to the other clamp and the other end connected to the skeleton side. Seismic piping restraint device.
請求項に記載の耐震用配管拘束装置において、
前記一のクランプは、2つの半円環状のバンド部材と、前記2つのバンド部材の一方側端部を互いに着脱可能に連結する第1のネジ部材と、前記2つのバンド部材の他方側端部を互いに着脱可能に連結する第2のネジ部材とで構成され、
前記他のクランプは、2つの半円環状のバンド部材と、前記2つのバンド部材の一方側端部を互いに着脱可能に連結する第3のネジ部材と、前記2つのバンド部材の他方側端部を互いに着脱可能に連結する第4のネジ部材とで構成されており、
前記第1のネジ部材に第1のロッドレストレイント又はスナッバが連結され、前記第2のネジ部材に第2のロッドレストレイント又はスナッバが連結され、前記第3のネジ部材に第3のロッドレストレイント又はスナッバが連結され、前記第4のネジ部材に第4のロッドレストレイント又はスナッバが連結されたことを特徴とする耐震用配管拘束装置。
In the seismic pipe restraint device according to claim 2 .
The one clamp includes two semicircular band members, a first screw member that detachably connects one side end of the two band members to each other, and the other end of the two band members. Consists of a second screw member that detachably connects the two to each other
The other clamp includes two semi-annular band members, a third threaded member that detachably connects one side end of the two band members to each other, and the other end of the two band members. It is composed of a fourth screw member that detachably connects the two to each other.
A first rod restraint or snubber is connected to the first screw member, a second rod restraint or snubber is connected to the second screw member, and a third is connected to the third screw member. A seismic pipe restraint device, characterized in that a rod restraint or snubber is connected, and a fourth rod restraint or snubber is connected to the fourth screw member.
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