JPH0226390A - Earthquake-proof supporter - Google Patents
Earthquake-proof supporterInfo
- Publication number
- JPH0226390A JPH0226390A JP63177506A JP17750688A JPH0226390A JP H0226390 A JPH0226390 A JP H0226390A JP 63177506 A JP63177506 A JP 63177506A JP 17750688 A JP17750688 A JP 17750688A JP H0226390 A JPH0226390 A JP H0226390A
- Authority
- JP
- Japan
- Prior art keywords
- damper
- simple pendulum
- building
- line
- earthquake
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010276 construction Methods 0.000 abstract 2
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Supports For Pipes And Cables (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分計〕
この発明は、原子力発電所、火力発電所等で使用される
配管等の耐震支持装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application] The present invention relates to an earthquake-resistant support device for piping and the like used in nuclear power plants, thermal power plants, etc.
第９図は例えば特開昭６３−５７９８４号公報に示され
た＃４震支持装置であり、図において、１は支持すべき
配管、１２．１４は２つのベローズ１３の両端部を密封
する閉塞部材、１５は液状媒体、１６は固定板１７に設
けられたオリフィス、１８は連結部材である。FIG. 9 shows, for example, the #4 seismic support device shown in Japanese Unexamined Patent Publication No. 63-57984. In the figure, 1 is the piping to be supported, and 12.14 is the blockage that seals both ends of the two bellows 13. 15 is a liquid medium, 16 is an orifice provided on the fixed plate 17, and 18 is a connecting member.
なお、８は建造物である。Note that 8 is a building.
次に動作について説明する。地震等により、配管１に第
９図において右側方向の外力が作用すると、２つのべ四
−ズ１３のうち左側のベロー、ズは閉塞部材１２を介し
て圧縮力を受ける。すると左側のベローズ１３内の液状
媒体１５は固定板１７のオリフィス１６を通り、右側の
ベローズ１３へ移動する。そのときに緩衝効果が得られ
る。Next, the operation will be explained. When an external force acts on the piping 1 in the right direction in FIG. 9 due to an earthquake or the like, the left bellows of the two bells 13 receives a compressive force via the closing member 12. Then, the liquid medium 15 in the bellows 13 on the left passes through the orifice 16 of the fixed plate 17 and moves to the bellows 13 on the right. At that time, a buffering effect can be obtained.
なお、オリフィス１Ｂを適当な形状とすることにより、
外力による衝撃力を吸収し、オイルスナバあるいはメカ
ニカルスナバと同等の機能を有するものとなる。In addition, by making the orifice 1B a suitable shape,
It absorbs the impact force caused by external force and has the same function as an oil snubber or a mechanical snubber.
従来の耐震支持装置は以上のように構成されているので
、ベローズを２個使用しなければならず、コスト高とな
るだけでなく、配管の設置される建屋あるいは構築物の
固有振動数と配管の固有振動数が一致し、共振するとい
う危険性がある。Conventional seismic support devices are constructed as described above, so two bellows must be used, which not only increases costs but also increases the frequency of the piping and the natural frequency of the building or structure in which the piping is installed. There is a danger that the natural frequencies will match and resonance will occur.
この発明は上記のような問題点を解消するためになされ
もので、コストを低減できるとともに、配管の固有振動
数が、配管の設置される建屋あるいは構築物の固有振動
数と一致しないように調整できる耐震支持装置を得るこ
とを目的とする。This invention was made to solve the above-mentioned problems, and it is possible to reduce costs and adjust the natural frequency of the pipe so that it does not match the natural frequency of the building or structure in which the pipe is installed. The purpose is to obtain an earthquake-resistant support device.
この発明に係る＃４震支持装置は、支持すべき配管等に
連接された押え棒の一端に無摩擦式ダイナミックダンパ
として、単振子を付加し、ダンパの役目をする単振子の
おもりの位置を調整可能な構造としたものである。The #4 earthquake support device according to the present invention adds a simple pendulum as a frictionless dynamic damper to one end of a presser bar connected to a pipe to be supported, and adjusts the position of the weight of the simple pendulum that acts as a damper. It has an adjustable structure.
この発明における′＃４Ｈ支持装置は、ダンパにより配
管の振動系が、配管の設置される建屋あるいは構築物と
共振するのを防ぐ。The #4H support device of the present invention uses a damper to prevent the vibration system of the piping from resonating with the building or structure in which the piping is installed.
以下、この発明の一実施例を図について説明する。第１
図において、３はコイルばね、４はダンパ取付部材５と
連結された押え棒、６はダンパ取付部材５をダンパ支持
部材１１に取付けるための軸、７はダンパ取付部材５に
固定ボルト１０で取付けられたダンパ（おもり）、２は
ダンパ取付部材５、ダンパ７等で構成され、軸６を中心
に触れる単振子である。１２はダンパ取付部材５に設け
られた長孔、９は押え欅４に突設され、上記長穴１２に
遊合するピン、１は支持されるべき配管である。An embodiment of the present invention will be described below with reference to the drawings. 1st
In the figure, 3 is a coil spring, 4 is a presser bar connected to the damper mounting member 5, 6 is a shaft for mounting the damper mounting member 5 to the damper support member 11, and 7 is mounted to the damper mounting member 5 with a fixing bolt 10. The damper (weight) 2 is composed of a damper mounting member 5, a damper 7, etc., and is a simple pendulum touching a shaft 6 as the center. 12 is a long hole provided in the damper mounting member 5, 9 is a pin protruding from the presser foot 4 and fits into the long hole 12, and 1 is a pipe to be supported.
第１図は本発明の一実施例を示す図であり、第２図はそ
れを１質点系のモデルで表したものである。FIG. 1 is a diagram showing an embodiment of the present invention, and FIG. 2 shows it as a model of a single mass point system.
同様に第３図に示したようにダンパを付加していない配
管支持装置をモデル化したものが第４図である。Similarly, FIG. 4 is a model of the piping support device shown in FIG. 3 without the addition of a damper.
第２図の固有振動数はｐ＝ ６７暦、第４図の固有振動
数はｐ ＝５７フ；７で表される。配管１の設置される
建屋あるいは構築物の振動数に対する振幅の大きさを示
した図が第５図である。The natural frequency in Fig. 2 is expressed as p = 67, and the natural frequency in Fig. 4 is expressed as p = 57 f;7. FIG. 5 is a diagram showing the magnitude of the amplitude with respect to the vibration frequency of the building or structure in which the pipe 1 is installed.
第５図において、吻を建屋あるいは構築物の固有振動数
とすると、第３図に示した配管支持方法ではｐ′とω０
は近く、大きな振幅を生じろ危険性があるのに対し、第
１図のようにダンパ７を付加することにより、ｐはω０
と比べ非常に小さくすることができ、振幅も非常に小さ
な値とするととが可能であり、配管１に加わる外力を軽
減できる。In Figure 5, if the nose is the natural frequency of the building or structure, then in the pipe support method shown in Figure 3, p' and ω0
is close and there is a danger of generating a large amplitude, but by adding damper 7 as shown in Figure 1, p becomes ω0
It is possible to set the amplitude to a very small value compared to , and the external force applied to the pipe 1 can be reduced.
なお、コイルばね３は配管１に復元作用をもたせるため
に取付けたが、本発明の配管支持装置は単振子２の構成
としているため、コイルばね３はなくても復元力は得ら
れる。Although the coil spring 3 was attached to give the pipe 1 a restoring effect, since the pipe support device of the present invention has the structure of the simple pendulum 2, the restoring force can be obtained even without the coil spring 3.
また、配管１の設置される建屋あるいは構築物により第
５−図に示したω。の値は異なってくる。Moreover, ω shown in FIG. 5 depends on the building or structure in which the pipe 1 is installed. The value of will be different.
従って、ダンパ７を付加しても固有振動数ｐはω０の近
くの値となる危険性がある。そのときには、第６図、第
７図に示したように、ダンパ７を付加しても大きな振動
が生じる。このような場合には、第８図に示したように
、ダンパ７を、固定している固定ボルトｌＯをゆるめて
下方に移動させるか、図示していないが上方に移動させ
、固有振動数ｐを建屋あるいは構築物の固有振動数ω、
よりも小さく、あるいは大きくシ、共振させないように
することにより、配管１に加わる地震等の振動により生
じる外力を軽減できる。Therefore, even if the damper 7 is added, there is a risk that the natural frequency p will be close to ω0. At that time, as shown in FIGS. 6 and 7, large vibrations occur even if the damper 7 is added. In such a case, as shown in FIG. 8, the damper 7 can be moved downward by loosening the fixing bolt lO, or moved upward (not shown) to reduce the natural frequency p. is the natural frequency ω of the building or structure,
By preventing resonance from occurring smaller or larger than the above, it is possible to reduce the external force that is applied to the pipe 1 due to vibrations such as earthquakes.
以上のようにこの発明によれば、配管の支持装置として
無摩擦式ダイナミックダンパを付加することにより、配
管に加わる地震等の外力を軽減できるという効果がある
。As described above, according to the present invention, by adding a frictionless dynamic damper as a support device for the piping, there is an effect that external forces such as earthquakes applied to the piping can be reduced.
第１図はこの発明の一実施例を示す配管の耐震支持装置
を示す側面図、第２図は第１図の装置を１質点系のモデ
ルで表した図、第３図、第４図はそれぞれダンパを付加
していない配管支持装置を示す側面図及びその１質点系
モデル化した図、第５図は振動数と振幅の関係を示した
図、第６図、第７図は配管の振動する様子を示した図、
第８図はこの発明の他の実施例を示す側面図、第９図は
従来の耐震支持装置の断面側面図である。
図中、１は配管、２は単振子、３はコイルばね、４は押
え棒、５ζよダンパ取付部材、６は軸、７はダンパ、８
は建造物、９はビン、１０は固定ボルト、１１はダンパ
支持部材、１２は長孔である。
なお、図中同一符号は同−又は相当部分を示す。FIG. 1 is a side view showing an earthquake-resistant support device for piping showing an embodiment of the present invention, FIG. 2 is a diagram showing the device in FIG. 1 as a model of a one-mass point system, and FIGS. 3 and 4 are A side view showing a pipe support device without a damper and a one-mass system model of the device, Figure 5 is a diagram showing the relationship between vibration frequency and amplitude, and Figures 6 and 7 are vibrations of piping. A diagram showing how
FIG. 8 is a side view showing another embodiment of the present invention, and FIG. 9 is a sectional side view of a conventional seismic support device. In the figure, 1 is a pipe, 2 is a simple pendulum, 3 is a coil spring, 4 is a presser rod, 5ζ is a damper mounting member, 6 is a shaft, 7 is a damper, 8
1 is a building, 9 is a bottle, 10 is a fixing bolt, 11 is a damper support member, and 12 is a long hole. Note that the same reference numerals in the figures indicate the same or equivalent parts.
Claims (1)
擦式ダイナミックダンパとして単振子を備え、このダン
パの役目をする単振子のおもりの位置を調節可能な構造
としたことを特徴とする耐震支持装置。A simple pendulum is provided as a frictionless dynamic damper at one end of the presser bar connected to the main vibrating body, such as piping, and the position of the weight of the simple pendulum, which serves as the damper, is structured to be adjustable. seismic support equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63177506A JPH0226390A (en) | 1988-07-15 | 1988-07-15 | Earthquake-proof supporter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63177506A JPH0226390A (en) | 1988-07-15 | 1988-07-15 | Earthquake-proof supporter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0226390A true JPH0226390A (en) | 1990-01-29 |
Family
ID=16032098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63177506A Pending JPH0226390A (en) | 1988-07-15 | 1988-07-15 | Earthquake-proof supporter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0226390A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120063915A1 (en) * | 2010-12-27 | 2012-03-15 | Mitsubishi Heavy Industries, Ltd. | Vibration control apparatus of wind turbine generator and wind turbine generator |
| WO2012089215A3 (en) * | 2010-12-29 | 2013-03-21 | Vestas Wind Systems A/S | Shock sensor for wind turbine generator |
-
1988
- 1988-07-15 JP JP63177506A patent/JPH0226390A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120063915A1 (en) * | 2010-12-27 | 2012-03-15 | Mitsubishi Heavy Industries, Ltd. | Vibration control apparatus of wind turbine generator and wind turbine generator |
| US8322975B2 (en) * | 2010-12-27 | 2012-12-04 | Mitsubishi Heavy Industries, Ltd. | Vibration control apparatus of wind turbine generator and wind turbine generator |
| WO2012089215A3 (en) * | 2010-12-29 | 2013-03-21 | Vestas Wind Systems A/S | Shock sensor for wind turbine generator |
| CN103270399A (en) * | 2010-12-29 | 2013-08-28 | 维斯塔斯风力***集团公司 | Shock sensor for wind turbine generator |
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